Head Gasket Sealer For Northstar Engine? 102 Most Correct Answers

BlueDevil is a local name in the automotive industry that produces high quality sealants. Since 1997, BlueDevil products have ensured you have a timely head gasket repair solution without incurring expensive repair fees. This article will review the BlueDevil headgasket sealer and determine if it is the permanent solution it claims to be.

It’s not often that you think about your car’s head gasket until there’s a mishap that needs to be fixed. A blown gasket is the worst thing that can happen to your car, not to mention the high cost of having mechanics replace the entire head gasket.

What is a BlueDevil head gasket sealer?

While it doesn’t require much maintenance, a blown seal is a risk for a car or truck owner. This simple malfunction can lead to an oil leak or an engine misfire, among other things. Depending on the severity of the head gasket leak, you may choose to replace the entire head gasket or settle for a head gasket sealer.

Unfortunately, most head gasket sealants do not permanently fix the leak. Using simple repairs back and forth will quickly aggravate a blown head gasket into a runaway and costly situation. This is where BlueDevil products come to your rescue.

BlueDevil Head Gasket Sealer repairs gasket leaks in blown head gaskets, heater cores, warped or cracked heads and freeze plugs. This head gasket sealer from BlueDevil permanently seals leaks by bonding to the alloy, cast, aluminum, metal or plastic so you don’t have to deal with another blown gasket.

One of the concerns of many car owners who require head gasket sealant is the risk of causing further damage to your car. BlueDevil understands that car repairs can be expensive, so taking care of your engine is a priority. They do this by making sure the sealant doesn’t contain any solids or particles that could clog your engine and cause further damage.

Before we look at what makes BlueDevil head gasket sealer stand out on the market, let’s break down the benefits of this 2.9 pound sealer.

Why should you use the BlueDevil Head Gasket Sealer?

Helps Seal Leaks – Blown gaskets are a big problem, especially if they go unnoticed. Using a quality sealant like BlueDevil Head Gasket Sealer will ensure leaks don’t become a recurring problem by giving you a permanent solution.

– Blown gaskets are a big problem, especially if they go unnoticed. Using a quality sealant like BlueDevil Head Gasket Sealer will ensure leaks don’t become a recurring problem by giving you a permanent solution. Saves you money – Going to the mechanic to have head gaskets fixed is expensive. Sometimes if it’s not done well you may have to return for further servicing or worse, change the entire head gasket. BlueDevil head gasket sealer offers a permanent alternative solution in an inexpensive 2.9 pound can.

– Going to the mechanic to have the head gaskets fixed is expensive. Sometimes if it’s not done well you may have to return for further servicing or worse, change the entire head gasket. BlueDevil head gasket sealer offers a permanent alternative solution in an inexpensive 2.9 pound can. Save Time – Using a caulk is so easy. All you have to do is pour the sealer into the radiator cap and all leaks are sealed in no time. This is a time-saving solution compared to replacing the entire seal.

e- Using a sealant is so easy. All you have to do is pour the sealer into the radiator cap and all leaks are sealed in no time. This is a time-saving solution compared to replacing the entire seal. Multipurpose- High quality head gasket sealants can do more than stop leaks. The BlueDevil head gasket sealer, for example, also takes care of your freeze plugs and heater cores to ensure that all parts of your engine are working as they should.

BlueDevil Head Gasket Sealer Overview

1. Engine type

The BlueDevil head gasket sealer works well with petrol and diesel engines. The number of cylinders in the engines does not change efficiency, although experts recommend them for 4 or 6 cylinders. In addition, this sealant forms strong bonds with various materials such as plastic, alloys, aluminum and other types of metal to repair blown head gaskets and other vital engine components.

2. Action Time

The BlueDevil vehicles engine sealant has a fast dwell time to ensure you are back on the road as quickly as possible. It takes about 50 minutes for the leaks to be permanently fixed. This is a less time consuming alternative compared to the hours or days it would take if you took your vehicle to a workshop.

3. Functionality

The BlueDevil head gasket seal ensures that the most important component of your car, the engine, is permanently fixed in terms of seals and cracks. The sealant flows to a leak location to create a permanent seal, ensuring there is no fluid loss or risk of engine misfire.

This Blue Devil head gasket sealer works on warped or cracked heads and solves leakage problems related to the freeze plugs or heater cores. In addition, the sealant also ensures that no liquid is lost due to a slow leak of the coolant.

4. Ease of Use

Blue Devil Head Gasket Sealer is easy to use and secures time consuming repairs. Since it contains no fine dust, it is guaranteed that your engine will not suffer any further damage. In addition, it does not contain any harmful chemicals that could harm you. However, it is important to ensure that you follow the instructions in the manual carefully.

5. Crowd

It’s hard to imagine how this 2.9 ounce head gasket sealer would permanently repair cracks and seals. However, this amount is enough to fix minor problems. It’s also good to have an emergency sealer with you when you travel, and this BlueDevil tin is the perfect size for that.

advantages

Provides a permanent solution to leaks and cracks

Will not damage your engine

Prevents coolant leaks

High quality efficiency

Prevents loss of coolant

It repairs damage to the heater cores

Very easy to use

Super cheap

Disadvantages

After use, thermostat problems may occur

The cylinder tubes and passages can become clogged

The opaque tin makes it difficult to see how much content is left

How to use the BlueDevil Head Gasket Sealer

Clean the cooling system and make sure it is flowing freely. Remove the thermostat and use a detergent such as B. the BlueDevil Radiator Flush to flush the cooling system. Then flush the system again with water. Use water to fill the cooling system. Be sure to leave enough room for the head gasket sealant. Remove the radiator cap, start the engine when cold and slowly rev it to maximum. Slowly pour in the BlueDevil Head Gasket Sealant while the engine is idling. Take 30 seconds for half a bottle and 1 minute for the entire bottle. With the cap on, allow the vehicle to idle for about 50 minutes. Thereafter, it is not necessary to flush the system again. Wait for the engine to cool before installing a new thermostat. Then make sure you drain enough fluid and top up with a compatible antifreeze.

frequently asked Questions

1. Does BlueDevil Head Gasket Sealer actually work?

Yes. BlueDevil head gasket sealer seals cracks and leaks that cause damage to your engine. Additionally, it’s an affordable and durable solution that works efficiently to stop leaks.

2. How long does BlueDevil head gasket sealant last?

BlueDevil is responding to permanently fix blown head gaskets and other related issues.

3. Will BlueDevil ruin your engine?

no BlueDevil products, especially head gasket sealant, will not ruin your car’s engine. It does not contain particles that can clog and damage the pipes.

4. What is the best headgasket sealant on the market?

The BlueDevil head gasket sealer is undoubtedly the best of its kind on the market. Not only is it easy to use, but it also provides a permanent solution to blown head gaskets. In addition, this multi-purpose seal will not cause any damage to your engine, which worries many buyers.

Image source: ridemission.com

It is common to find many internet queries on the “advantages and disadvantages of a headgasket sealer”. Such requests are made by drivers looking for solutions to a bad head gasket. A vehicle’s head gasket is a component that sits between your cylinder heads and the cylinder block. It is responsible for maintaining compression while preventing coolant and oil from entering the vehicle’s cylinders. A blown (or blown) head gasket leads to problems such as oil and coolant leaks and engine misfires, among other problems. Some car owners with a blown head gasket choose to repair it with a head gasket sealant. However, since there is some excitement surrounding headgasket sealers, this article attempts to answer the question, are headgasket sealers worth it?

How to Install BlueDevil Head Gasket Sealer YouTube

What is head gasket sealing?

Let’s start this conversation with a look at why head gasket sealers are used in the first place. A bad head gasket can often lead to really bad situations if not managed properly. However, replacing a bad head gasket can be expensive and burn a hole in your pocket, depending on your location and the dealer or mechanic shop. There is another cheaper option: head gasket sealing. While the verdict on headgasket gaskets is yet to be clarified, going without a blown headgasket is bad news for your engine and ultimately your car.

A head gasket sealant is used to hold the head gasket in place. It is used as a stopgap solution for blown head gaskets as it is manufactured to repair and seal head gasket leaks. It contains no solids or particles and can fuse with other materials. It essentially prevents oil and coolant leakage and does not crack or shrink after drying. It’s also relatively safe and fairly easy to use, which is why it’s touted as a great repair solution for blown head gaskets. Are head gaskets good? Read on to find out.

Does head gasket sealing work?

Yes. But you must be sure you are using a reputable brand of head gasket sealer. Interestingly, there have been mixed reactions to the effectiveness of headgasket sealants, particularly on online forums such as the headgasket sealant forum.

A number of car owners can attest to how well headgasket sealers repair their blown headgaskets and extend the life of their cars. On the other hand, some others see head gasket sealers as a scam that does more harm than good. The truth is that the answer to the question lies in a few factors. First of all, it depends on what type of head gasket sealant you are buying. Be sure to purchase the product that best suits your vehicle. Second, the way you apply the sealant also matters.

A head gasket sealant is to be poured into the vehicle’s radiator. After that, you must run the vehicle for at least 15 minutes while keeping the heater and fan on high. Third, the extent of damage to the head gasket also matters. Some damage is irreparable and cannot be fixed by head gasket sealing. So back to the question. Does the head gasket work? Yes. A sealant will work if it is of good quality, if it is applied correctly, and if the damage to the head gasket is repairable.

Pros and cons of head gasket sealing

Opinions differ on the effectiveness of head gasket sealants. The reason for this is that, like most things in life, all head gasket sealants have both advantages and disadvantages. Interestingly, each of the different head gasket sealing products has pros and cons that are unique to them. Since there is a wide range of such products, we will look at these advantages and disadvantages in general.

Advantages of head gasket sealing

Quick solution. Head gasket sealers can quickly fix leaks that occur due to a blown head gasket. For example, you’re driving on the interstate in the middle of nowhere, no gas station in sight, just miles of pavement, and somehow your head gasket blows. In such a situation, all you need is a head gasket sealant. If you use it correctly, it will stop leaks and prevent the engine from knocking.

It’s affordable. Interestingly, quality head gasket sealers are relatively cheap. Especially when compared to the cost of replacing the head gasket. Depending on the brand of gasket sealer, you can find a permanent solution to the head gasket problems at half the replacement price.

Time saving aspect. It takes little or no time to apply sealant to a blown gasket. Once you pour the sealant into the radiator, the car does the rest and the problem is resolved within an hour. However, there is more. You can also use your head gasket sealant to repair the vehicle’s heater core and also freeze the plugs.

Disadvantages of Head Gasket Sealer

It can be problematic: Conversely, head gasket seals can also be problematic. If poured into the vehicle, it could react with the heat and leave a powdery deposit that forms over time. If you do not follow the instructions for using the products, the sealing of the head gasket can affect the performance of the thermostat.

Compatibility Issues: There are compatibility issues. Head gasket sealers work on certain engines. Certain products are only designed for diesel engines and vice versa. And with some products, the effect of the seal wears off after a short time or not at all.

frequently asked Questions

Q: Will Head Gasket Sealer ruin an engine?

no If you use the correct head gasket and apply it correctly, your vehicle engine will be safe. The particles of sealant are so small that while they will fix head gasket leaks, they will not affect the engine components. The caveat is that you must use a trusted brand of headgasket sealant.

Q: How long does head gasket sealant last? It all depends on the brand of sealant. Different brands promise different periods of time depending on the quality of the products. The duration of the effect of a seal depends on the product in question. Then it all depends on how badly the head gasket is damaged. Given the different types of sealants on the market, it is safe to say that 6 months is the shortest time a head gasket sealant will remain effective.

Q: Where do I apply head gasket sealer?

In the cooler. That’s where the engine should go. To get the most out of the product in the can, pour it through the radiator cap. You can pour it straight through the coolant reservoir or the hose itself.

Q: Does black pepper stop a head gasket leak?

Yes. It temporarily plugs the head gasket leak. As? Ground black pepper contains small particles that will travel to where there is a head gasket leak. They then increase in size until they can plug the hole and keep the leak tight. A handful of ground black pepper is enough to prevent head gasket leakage. However, it is by no means a permanent solution. Rather, it should give you enough time to find a more sustainable solution to the problem.

Q: Can you use Blue Devil Head Gasket Sealer twice?

Yes. You can use Blue Devil head gasket sealer more than once. This product does not contain petroleum distillates, so you can use it more than once if there is a leak after the last use. When applying, all you have to do is follow the instructions to the letter.

last words

So you might be wondering what is the best head gasket sealant? Well, that all depends on your engine and the nature of the damage. There are tons of head gasket sealants on the market all claiming to be the best fix for blown head gaskets. Deciding what works best for you can be difficult, but not impossible. You need a good understanding of your engine so you can choose what works and what doesn’t. I do recommend Blue Devil head gasket sealer though; It is a beautiful product that you must try. You may also get help from countless head gasket sealant reviews online. At this point you have seen the uses and pros and cons of head gasket sealants and their applications.

Who Should Fix Your Engine?

At RB Auto Service we are Cadillac specialists and specialists in 4.6L 32V Northstar engines. If you have, or suspect, the all too common head gasket failure, you may be wondering how much it should cost? Or who should I have the service performed? I’ll answer the last question first.

The Northstar engine is a uniquely designed engine that achieves relatively low emissions, good fuel economy for the full-size luxury models it powers, and excellent horsepower, all on regular pump gas. An all-aluminum construction was critical to achieving this level of performance. This construction and other unique design elements give the Northstar its own set of problems that surface during repairs. These problems include broken main bearing bolts, stripped headbolt and mainbolt threads, and special tools required for proper installation of cartridge style rear main seals and recessed valve stem seals. Also, the space requirement means that all Northstar engines must be removed to be properly serviced.

For these reasons, it is important that your engine only be repaired by a Cadillac and Northstar specialist. I have repaired many head gaskets the second time after the first repair failed at a less experienced shop. I was also called in to pull out broken bolts, repair threads and install bolt kits for other workshops. I charge them as much as I would charge a regular customer. I can only assume that the cost of my services has been passed on to their customers. Only experience can teach you the lessons needed to properly repair a Northstar. And. Only specialists see the value in owning thousands of dollars worth of special tools required to get it right. Save big money and get it fixed right the first time. The only thing more unpleasant than spending money on repairing your car is spending it twice on the same repair.

How much?

Estimates for this job vary widely due to the risk involved in working on the unique engine. Our goal is zero warranty claims for internal repairs. Our thorough repair process has enabled us to achieve this goal. Estimates from dealers and reputable independent repairers range from $4000 to $6000, and many offer very limited, if any, repair warranties due to the risk involved. Other shops value less due to their inexperience with the problems they might face and what it takes to provide a permanent fix rather than a temporary patch. I see many customers who have already tried these inexpensive repairs and fail again. I was also called to help well-meaning stores that have encountered common problems that are easy for a specialist to solve, but for which other stores are simply not equipped. I’ve seen estimates in this range as low as $2500. However, most customers report that the final bill was much higher. Many of these customers have been to my shop because the previous head gasket repair had failed.

Our service includes engine removal and installation (front wheel drive vehicles), replacement of all gaskets on the top end of the engine including valve stem seals, new oil (Mobil1) and filter (Purolator PureOne) and cleaning of the valves. Also installing the absolute best headstuds for the Northstar application from Northstar Performance, the patented SureGrip HeadStuds. We have recently upgraded this service to include a new OEM water pump, thermostat and spark plugs. We often find one or more spark plugs dirty with coolant. We also often find aftermarket thermostats causing overheating or a higher than normal coolant temperature at idle. We’ve also seen water pump seals fail shortly after head gasket failure and head gasket repairs. These changes were made to ensure the highest quality and to more accurately reflect the actual cost of the repair on average. To our knowledge we are the only shop in the area that installs head studs for the Northstar engine. This is the only permanent solution to head gasket problems on this engine. With our head stud process, we offer an unmatched 3 year/36,000 mile warranty. The threads of the original head bolts fail, threaded inserts fail, only the larger studs with increased thread engagement and thread engagement deeper in the block produce the correct clamping force and reliable threads. If you’re going to spend the money, why not make sure it’s done right the first time?

Call today for more information on our expert services. 727-430-8750

Is your Cadillac or Northstar engine overheating?

So your Northstar powered car is overheating or blowing white smoke. It may be losing coolant and you can’t explain where it’s going. There are three ways head gaskets can fail on a Northstar. 1- Exhaust gases blow into the cooling system under load, e.g. B. when you climb a hill or overtake someone. 2 coolant gets into the cylinders and you leave a trail of white smoke. 3- Coolant gets into your oil or vice versa. A blown head gasket doesn’t mean your car is roasted – Cadillacs and Oldsmobile Auroras are truly powerful vehicles that love to be driven. Don’t give up your car just yet.

I’ve been told it’s probably the head gasket. Could this be true?

Of course, you don’t want to have the head gaskets replaced if they don’t need to. Many people don’t get straight answers when it comes to head gasket diagnosis, especially when it comes to Northstars. Although we strongly recommend having this work done if your car is a 2003 model year or older, as preventive maintenance it may not yet be necessary.

Here are the most common signs of a head gasket failure on a Northstar:

– overheating

– High-pressure build-up in the coolant expansion tank, which persists when the engine cools down

– White smoke from the exhaust (condensation/water vapor is perfectly normal on any car)

– Coolant smell from the exhaust

– Engine temperature spikes when accelerating or on steep climbs

– Coolant in the oil (this makes the oil milky white or light brown)

– Sudden heavy oil leak from rear main seal area

A good test: make sure you have plenty of coolant and get the car onto the freeway and do a few quick acceleration runs. Quickly bring the car up to 70 MPH (120 km/h) and slow it back down to around 30 MPH (50 km/h). Only do this where it is legal! Repeat this process and monitor the coolant temperature. Normally, if you have the meter, the temperature should never go past the 5/8 mark. If you have the digital display, the temperature should never reach the 240 degree F mark. If the temperature rises to the point where it tells you “AC off to protect engine” or “Engine hot – engine idling” or your gauge crosses the 3/4 mark, stop immediately and let it go idle the car for a while minute and turn it off. Let it cool down a bit, top up your coolant and head home. At this point, keep your foot off the gas as much as possible. Your head gaskets are blown / head bolts are pulled.

The Best Test: Get a “Combustion Leak Test Kit” available from Napa or Autozone. It checks whether exhaust gases are present in the cooling system. This test never fails.

Many garages are able to diagnose a bad head gasket, but not all know how to deal with the Northstar. Did you know that a Northstar can pass all the usual pressure tests and still have a bad head gasket? This is due to the annoying head screws. For this reason we recommend the above method for determining the condition of your seals.

So what to do now? Well, for starters, do NOT use any type of quick-fix in a bottle. I’m sure you’ve read of miracle sealers developed for the Northstar and a number of other products on the market. That just clogs the coolant passages. The guy who does your head gaskets won’t appreciate the mess that needs to be cleaned up when he disassembles your engine, and you won’t like replacing your radiator and heater core. Of course, it’s never a bad idea to replace your water pump, check the belt and tensioner, the operation of the cooling fan (they sometimes fail), and when in doubt, a new radiator. But most of the time nothing needs to be done but the head gaskets.

If you have coolant in the oil, stop driving, period. Don’t drive the car at all. This can seriously damage your engine. If you need to move the car, make sure the oil level is at the right level and not too high.

If you see moderate to heavy white smoke, do not attempt to restart the car. Go where you need to go and turn off the car. Especially if you have a 2000 model or newer – the engines aren’t that powerful and will have broken/bent the connecting rods if coolant got into the cylinders.

If you get exhaust fumes in the coolant (plastic coolant tank pressure) it’s fine to drive the car provided you can maintain your speed at around 50 mph (80 km/h) and keep checking/topping up your coolant. No more sudden acceleration or overtaking, and stay away from long hills. Just don’t overheat the engine. Regardless of what the owner’s manual says, it’s not okay to continue driving without coolant – these cars have a limp home mode, but it’s not very effective. If you have overheated your engine, the oil life monitor will go back to 0%. After the engine overheats, you should change the oil.

Overdeveloped. If you haven’t heard the term, a look at the history of GM’s Northstar engine should help. Offering two decades of service, the Northstar engine has made a name for itself. What kind of reputation, you might ask. Sometimes good, sometimes bad. Let’s clear it up for you.

History of the Northstar Engine

Northstar engines were performance engines designed and manufactured by General Motors in the 1990’s. Most revered for its applications in many Cadillacs, the Northstar engine is considered to be GM’s most complex engine of all time.

The Northstar engines were quite complicated for their time. In its early years it was considered state-of-the-art technology. But as it chewed on for years, its intricate construction turned into an intricate puzzle of mechanics.

The conception of the Northstar engine family

General Motors began scribbling on the drawing board for this engine in the ’80s. With banks filling up and people flaunting goldies, the luxury car market was about to explode. With European manufacturers already involved and Japanese manufacturers like Lexus concocting a revolutionary recipe like the LS400, GM had to act. However, it was not a spontaneous reaction. It took GM nearly a decade to envision, design, engineer, market and release this mill.

With Oldsmobile’s R&D facility, GM began building a sophisticated engine that would hold its own against modern day competing units. That was a very good decision on paper. Their aging OHV (Over Head Valve) engines were on their deathbed and would not have survived the fight. The existing OHV engines were also plagued with reliability issues, which wouldn’t have helped matters either.

Construction of the Northstar engine

The Northstar engine was an engineering feat that was quite impressive as an idea. They were 90 degree V engines. The original Northstar engine was a 4.6 liter (4,565 cc) V8.

V configuration

The first Northstar engine was a 4.6 liter V8 engine. In a V engine, the cylinders are arranged in cylinder banks at an angle to one another on a common crankshaft. In a V8 engine, for example, 4 cylinders are arranged in a row in each of the two cylinder banks. Each of these banks is placed at an angle to each other on a crankshaft, forming a V.

The Northstar V8 had the same configuration and the angle between the benches was 90 degrees. These V8s were inherently balanced and offered smoother propulsion compared to an inline engine.

DOHC design

Northstar engines have done away with the old overhead valve configuration. In the old OHV engines, pushrods and rocker arms were used to control valve movement. This proved ineffective as modern cars demanded more power. For more power, gasoline engines had to rev higher. An overhead valve engine was not able to reach higher speeds.

Northstar motors have addressed this issue by moving to an Over Head Cam design. In this configuration, the camshafts are moved from the engine block to the cylinder head, controlling the valve from above. This made valve movement faster, resulting in quicker throttle response and more power.

The Northstar engines used four valves per cylinder. Instead of a single camshaft, they used two separate units. This is called a Double Over Head Cam (DOHC) engine. While one camshaft operated the intake valves, the other took care of the exhaust valves. With both cams working in tandem, these engines could rev even higher and produce more power.

DOHC engines also offered more control over valve action, paving the way for better power delivery and fuel efficiency. The Northstar engines benefited from this technology as it represented a major leap over their old pushrod engines.

Aluminum block/aluminum head

Northstar engines were modern engines. A modern move in automotive engineering from back then that is still going strong today is weight saving. Northstar engines used aluminum in the construction of their block and head, saving a significant amount of weight.

exits

With all this modern technology, the Northstar engines were expected to produce a decent amount of power. And it did. The first naturally aspirated models achieved impressive performances of 275 hp to 300 hp. This was increased to up to 469 hp in the later arriving supercharged variants. The supercharged versions were also debored, with the overall capacity reduced to 4.4 litres.

interference engine design

Northstar engines were interference engines. Interference engines are made with no clearance between the top of the pistons and the valves. Non-interference engines leave space between the valves and the piston as it approaches top dead center of the cylinder.

Interference engines are built to tighter tolerances. This allows the engine to use most of its volume, rev higher and produce more power. But on the flip side, interference engines could be an absolute headache. Unfortunately, Northstar engines were primarily known for this feature of their interference design.

In any engine, a failure in the timing belt will cause the engine to stop. But the clearance between the valve and pistons in a non-engaging engine prevents a collision and saves itself.

But on an interference engine like the Northstar, a timing belt failure for any reason can be catastrophic. When you’re in the middle of a ride, a failure in the timing belt can cause the pistons to slam into the valves. A bang, a crack and a rattle is all you’ll hear before the engine finally lets go. In this case, an extensive conversion is required.

Unfortunately, Northstar engines’ interference design was just another nail in his coffin.

limp mode

There were a few features that made Northstar engines special, and limp home mode was one of them. This was a failsafe method. These engines could run without coolant. In this worst-case scenario, the engine directs fuel to only one bank of cylinders. Meanwhile, the other bank is being air-cooled.

The Northstar engines had enormous oil capacity as well as aluminum construction. These helped with better heat dissipation. With this technology, the Northstar engines could run a maximum of 100 miles without coolant.

Later developments in the Northstar engine

During its nearly two-decade lifespan, the Northstar engine lineup has received a number of updates

compressor

The later Northstar engines were supercharged to get more power and torque from a smaller engine size.

Variable valve control

A modern technology that made it possible to change valve timing. This helped the engine adjust to fuel demand depending on the environment, gas intake and a variety of other factors. On the Northstar engine it was possible to vary the intake valve by 40 degrees and the exhaust valve by 50 degrees.

Direct coil-on-plug ignition

Each spark plug was connected to an individual coil. This arrangement helps the Engine Control Module (ECM) control ignition more accurately. With this technology it was possible to achieve better performance, fuel efficiency and emissions. It also eliminated the spark plug wires, a weak link in the spark plug assembly.

Air-cooled alternator

That should be a downgrade. The original Northstar engine models had a liquid-cooled alternator to extend their life. However, this comes with the risk of coolant leaks and extra hoses. To improve reliability, GM swapped it out for air-cooled units.

The final rollout

The Northstar engine debuted in mid-1992 in the Cadillac Allanté. The Allanté was a V8 model of the Northstar with an output of 295 hp. This was also accompanied by a healthy torque reserve at 290 lb.ft. The Allanté’s engine gave birth to the long-distance engines used by Cadillac, Oldsmobile and Buick, including a cameo appearance in a Shelby.

Northstar Engine versions

L37

The original Northstar engine in the Cadillac Allanté’s engine bay was the L37. Power increased from 295 hp in the Allanté to 300 hp in the 1996-2004 STS, DTS and ETC Cadillacs. The L37 was installed transversely for front-wheel drive. The Northstar engine was a rarity as V8 engines are usually reserved for rear wheel drive cars.

LD8

The L37 was a Northstar engine built for absolute performance. The LD8, on the other hand, focused on producing more torque. It didn’t rev as high as the performance-oriented L37. Most of these LD8 Northstar engines produce 275 hp and 300 lb.ft. This engine was used in the 1994-2002 Cadillac Eldorado, 1996-2005 Cadillac Deville, 2006-2011 Cadillac DTS and 2006-2007 Buick Lucerne.

LH2

This was the first longitudinally mounted Northstar engine. While the LH2 was originally designed for transversely mounted front wheel drive applications, it enabled rear wheel drive/four wheel drive applications. This Northstar also received updates including continuously variable valve timing.

With this improvement, the LH2 Northstar V8 produced more power, 320 hp. It also produced more torque at 315 lb.ft. Developed in 2004, the LH2 Northstar engine found its home in the Cadillac STS, SRX and XLR models.

LC3

This was a major update in the area of ​​forced initiation. While all previous versions of the Northstar engine were naturally aspirated, the LC3 was turbocharged.

The LC3 Northstar was featured on the 2006 Cadillac STS-V and XLR-V performance models and was capable of producing 469 hp and 439 lb.ft of torque in the STS-V. With the XLR-V, performance was slightly lower at 443 hp and 414 lb.ft. As previously mentioned, this engine has also been debored, reducing displacement from 4.6 liters to 4.4 liters for added strength.

L47

This engine is not always referred to as the Northstar engine, but is largely based on it. The Aurora engine is named for its application in the 1995-2004 Oldsmobile Aurora. It’s an even smaller engine at 4.0 liters and rated at 250 hp and 260 lb. feet

This is also the Northstar engine that went to the race track. A 650 hp version of the L47 Northstar, used in the Oldsmobile Aurora GTS-1 and Riley & Scott LMP prototypes, entered the 1995 GM racing division’s IMSA sports car competition. It also competed in the 1997 Indy Racing League competition. In 2000, a twin-turbo version was used in the Cadillac Northstar LMP program.

The L47 version of the Northstar engine was also featured on a Shelby. The Shelby Series 1, which was made from 1999 to 2005, had the L47 under its hood with a decent output of 320 hp and 290 lb.ft.

LX5 short star

We deviate even further from the well-known V8 Northstar engine formula. The LX5 Shortstar was based on the L47 Aurora V8 engine but was a V6. Technically it was a short Northstar engine, later called the Shortstar engine.

But don’t be mistaken. This wasn’t the exact L47 with two less cylinders. The entire cylinder block has been redesigned from the ground up but retains the Northstar’s 90 degree V angle.

The loss of two cylinders also reduced the engine’s capacity. The Shortstar displaced only 3.5 liters and made 215 hp. Torque was also lower at 234 lb.ft.

This engine debuted in the 1999 Oldsmobile Intrigue. It was also found under the hood of the Oldsmobile Aurora, playing second fiddle to the L47 Northstar V8, also known as the Aurora engine. The Shortstar was finally discontinued in 2004, making way for the newer High Feature Engine.

But before he died, the Shortstar found its spot on Ward’s list of the 10 Best Engines for 1999 and 2000. The V8 Northstar engines also found a spot on that list in 1995, 1996 and 1997.

The Last North Stars

After a long run of nearly two decades, the Northstar engine reached its final stage in 2011. The last cars with a Northstar engine were the Buick Lucerne, Cadillac DTS and Cadillac STS. The Northstar was later replaced by the GM LS small-block OHV engine and switched back to the pushrod design.

The Northstar system

The Northstar engine was way ahead of its time, we’ve all read about it. But with this new engine, GM also released a package of features that made their cars even more modern. The Northstar package was introduced in the 1993 Cadillac Allanté and in the 1993 Cadillac Seville and Cadillac Eldorado.

The Northstar system consisted of components for different areas of the vehicle. Engine, transmission, brakes, suspension, steering, everything. With this package, GM planned to make the cars as modern as possible. This should create an offensive against upcoming Japanese and European luxury cars.

The Northstar system included

The Northstar Engine: It was either the original L37 or the LD8 engine included in this package.

Variable valve timing: These engines offered continuously varying valve timing for better fuel efficiency.

GM 4T80-E 4-speed automatic transmission

Road Sensing Suspension (RSS): This system used sensors to measure the damping rates of the shock absorbers every 15 milliseconds. Depending on the road surface, the damping was changed between two settings. Advanced CV-RSS system was available in some cars.

Bosch anti-lock braking system and four-wheel disc brakes

Magnasteer variable speed power steering

Northstar engine problems

So if the Northstar engine was an example of modern engineering, why is it so heavily criticized on online forums? Simple answer, it was bad modern technology. But that’s not so easy to say. Since the Northstar engine was used in a spate of GM cars, it will be a blanket statement when we say it was an unreliable engine.

If you’re in the habit of scouring Craigslist for used cars on a dismal budget, you might have come across a number of Northstar-equipped models. For so many cars with the same engine to have such a low resale value, there should be a common problem with the engine. And yes, there is. But unlike a modern, unreliable GM car like the Chevrolet Cruze, the Northstar-powered machines often had a core problem.

Problem with the head gasket

This is the main issue that everyone raises on almost all forums when talking about the Northstar engine. This was a common problem in the engine and one of the main reasons that reduced the Northstar’s popularity.

When the Northstar engines overheat, the cap bolts would easily come loose from the engine block. These single use torque stretch screws were too thin and smooth. These bolts will stretch permanently once tightened in place. In an overheating scenario, this stretch increases, causing them to be pulled out.

Coolant may leak out when removing the cap screws. This reduces the amount of coolant that cools the combustion chamber and overheats the engine. Even as the engine cools, the expanded bolts maintain the expansion, leaving a permanent gap. This can rupture the head gasket.

Limp home mode would have helped the Northstar keep the engine from some overheating, but when it did overheat the engine was so tightly toleranced, paving the way for a colossal repair job.

How do you recognize this problem?

As with any other vehicle, the engine temperature gauge and coolant level gauge are the main indicators of an overheated engine. Puffs of smoke from the exhaust or the constant refilling of the radiator are also warnings.

If you notice any of these warnings, it is recommended that you stop the vehicle immediately. Remember, don’t trust the Northstar’s limp home mode. That might not help you in this scenario.

Which engines had the most problems?

Head gasket problems were most common on 1997-1999 Northstar engines. In 2000, Cadillac tried to solve this problem by increasing the length of these bolts. This actually helped reduce the chances of a seal blowing out, but it didn’t eliminate it.

In 2004 they finally replaced the infamous bolts. They were swapped out for LS6 head bolts, which were longer than the stock bolts and had a coarser thread. Because of this modification, the 2005 through 2011 Northstar engines had fewer gasket problems. In fact, it was no less reliable than other aluminum V8 engines.

What is the solution?

The only sensible repair is replacing the cylinder head gasket and the dreaded TTY bolts. This costs one bomb in a normal car. But in the “overengineered” Northstar, it cost the bomb and its launcher.

The Northstar engines were so tightly packed in the engine bay. Therefore, the only way to change these components is to drop the engine. That would cost the owner an arm and a leg. Exact estimates are hard to find, but approximate numbers range from $4,000 to $5,000. This can be more than the actual value of the entire car on the used market.

This made the task of repair even more difficult. Therefore, Youtuber Car Wizard called the Northstar engine the dumbest design.

Other Northstar engine issues

Aside from the head gasket issue, Northstar engines have had a few other minor issues in the past.

oil consumption

Northstars are notorious for their excessive oil consumption. Pre-2000 Northstars can drink up to a quart of oil in just 500 miles. The piston rings in these cars can contain carbon deposits that leave an incompetent seal. This increases oil consumption

oil leaks

The earlier Northstars can develop leaks around the gaskets and valve covers. It goes without saying that with this engine the oil level can drop. The owner may need to replace these seals.

Carbon deposits in cylinders

The carbon deposits in the piston rings were solved by GM in 2000. But this order led to another carbon-related problem. The 2000 and 2001 Northstar engines have been found to develop carbon deposits in the cylinders. As a result, the engine underperforms under heavy acceleration.

Is the hatred of the Northstar engine justified?

So what do we know? When it came out, Northstar engines weren’t like the rugged iron block engines that everyone was familiar with. It’s been manufactured to tighter tolerances, making it a tricky, high-maintenance motor to live with.

It has had its own fair share of problems, the most acute of which is the head gasket issue. This could easily have been solved by swapping out the bolts for stronger ones. But dropping the engine to replace the bolts and gasket made it an unnecessarily expensive proposition.

The unreasonable expense of repairing it was almost always more than what the whole car is worth. Therefore, most owners opted to dispose of the car instead of putting money into it. This only worsened the already notorious appeal of the Northstar engine.

Northstar engines are definitely expensive to live with. But if you’re looking for a modern American engine, stick with Northstars after 2005.

Feature image via VX1NG on wiki.commons (CC BY-SA 3.0).

Approved Tools

Tried and tested by our team, these tools are ideal for repairing your car at home.

Benefits of Gasket Sealers

Additional protection against leakage. Using a sealant can prevent leakage between surfaces. This is especially true on older engines where the surface can be pitted, dented or scratched, preventing a good seal and allowing leaks.

Using a sealant can prevent leakage between surfaces. This is especially true on older engines where the surface can be pitted, dented or scratched, preventing a good seal and allowing leaks. Stronger pairing. When you use a sealant properly, it can make a good seal even better as it can make the seal stronger. A stronger seal will last longer and also allow for longer parts life.

When you use a sealant properly, it can make a good seal even better as it can make the seal stronger. A stronger seal will last longer and also allow for longer parts life. sealing ability. Some applications, such as oil pans and differential covers, require a sealant. You don’t need to buy a separate gasket because a caulk is semi-liquid. It creates its own seal.

Types of sealants

Why You Should Trust Us Our ratings are based on a combination of real-world testing, expert input, “crowd wisdom” ratings from actual buyers, and our own expertise. We always strive to provide real, accurate guides to help you make the best choices. Learn more

shellac

Also called Indian Head (from the Permatex product), use this sealer for cardboard or thin paper gaskets in low pressure, low temperature (between 300 and 350 degrees Fahrenheit) situations. It resists engine fluids and most technicians use it to install thermostat, differential and timing cover gaskets. This type is easy to remove.

High stickiness

This is a non-drying caulking sealer that technicians use in similar situations to using shellac, but these sealers can withstand temperatures of up to 500 degrees Fahrenheit. High tack sealers are resistant to diesel fuel, propane and kerosene and remain tacky.

manufacturer of seals

These sealers are available in three versions: 1) fast setting, quick drying, 2) slow drying and paintable, and 3) non-setting. Each forms a seal that can withstand temperatures of up to 400 degrees Fahrenheit. Technicians use #1 to install threaded connections and block expansion anchors and make seals between metal-to-metal flanges. They use #2 for paper or cork oil pan gaskets and neoprene transmission pan gaskets. Technicians use #3 sealant to seal hose fittings.

copper

Engineers use this type of sealant for head gaskets and exhaust manifolds. It fills tiny imperfections in the metal, providing a definitive seal. Metal in the seal aids in heat dissipation and promotes even transfer between mating surfaces. These sealants can withstand up to 500 degrees Fahrenheit and are used for exhaust and head gaskets. They can also be easily removed long after installation.

anaerobic

These sealants are typically marketed in a tube and are red in color. Technicians use them where no external air source is available to assist drying. Manufacturers have developed them to meet OEM requirements for manufacturers of non-corrosive seals in metal-to-metal situations. They are used in situations where a replacement is not available or where a seal has never been present.

RTV silicone

RTV and Ultra-RTV (room temperature vulcanization, which is the temperature at which the silicone begins to set) silicone sealants work in situations up to 750 degrees Fahrenheit. You can find these in multiple colors and in different dependent modes: aerosol cans, tubes, and cartridge-style cartridges. The color of the seal indicates heat tolerance. Grey, Black and Blue are for up to 500 degrees; Red and orange stand for up to 650 degrees and copper for up to 750 degrees. Experts recommend the Ultra version for the current electronically controlled vehicles because they are sensor-safe.

top brands

gasgacinch

Founded in the United States, Gasgacinch has been developing and marketing sealants for more than 50 years. The company’s iconic “Slipping Girl” mascot is based on World War II pin-up girl art and is recognized worldwide. The mascot design dates back to the 1950s. Gasgacinch manufactures sealants for standard car and truck applications, but also has products for specialty vehicles such as high-performance cars and motorcycles. Popular products include the 440C Gasket Sealer and Belt Dressing and the 440-B Gasket Sealer and Belt Dressing.

Permatex

Since company founder Constant Benolt, Sr. developed the first Permatex product, a bicycle tire sealant, in 1909, the company has manufactured, marketed and distributed its sealants in the United States. With locations in New York, Kansas City and Florida, the company relocated to Cleveland, Ohio in the 1970s after being purchased by Loctite Corporation. In 2005, ITW (Illinois Tool Works) purchased Permatex, the current owner and parent company. Check out popular Permatex gasket sealers like the Gear Oil Gasket Maker and the High Temp Red RTV Silicone Gasket Maker.

Gasket sealer prices

Under $10. Economical yet effective sealers occupy this price range. It starts at the low price end with silicone sealants for water pumps and thermostat housings and includes silicone gasket manufacturers at the $10 end.

Economical yet effective sealers occupy this price range. It starts at the low price end with silicone sealants for water pumps and thermostat housings and includes silicone gasket manufacturers at the $10 end. $10-$20. This price range includes manufacturers of elastic rubber and silicone gaskets that replace rubber, paper and cork gaskets. You will receive different amounts for your purchase depending on the product, from 1.7 ounces to 5 ounces.

This price range includes manufacturers of elastic rubber and silicone gaskets that replace rubber, paper and cork gaskets. You will receive different amounts for your purchase depending on the product, from 1.7 ounces to 5 ounces. $20-$90. In this price range you will find sealants for permanent repair of head gaskets and engine blocks, including effective sealing of cracked head gaskets. These sealers provide an extra strong permanent repair and are available in pourable and aerosol can versions.

main features

sealer

A sealer helps strengthen a seal. It works in conjunction with the gasket rather than creating your own gasket. A sealer fills porous areas, ridges, and scratches in metal and other materials to prevent leakage of liquid or gas and allow the seal itself to function better. A product that uses a gasket seals the area better. This allows parts to do their jobs and assemblies to work more efficiently.

seal maker

This type of product creates a seal where you need one. After you apply it to a surface, it forms a seal where there was none before. This saves you from buying (or making your own) gasket. When you apply it and cure it, it performs the same job as a paper, fiber, or composite gasket.

surface material

This type of gasket joins surfaces in a similar way to glue or glue. This type of gasket does two jobs: it forms a seal, but it also adheres to the two surfaces together so they function as one part or assembly. Since it forms a seal, no gases or liquids can escape. Because it acts like a glue, the pieces you want to work together fit together so they can work together.

Other considerations

type of sealing. The type of sealant you purchase will of course depend on your needs and application. Reinforcing a gasket with a sealer is a completely different situation than when you need to create a gasket. If you need to bond two surfaces together, the sealant you purchase must also have this ability.

The type of sealant you purchase will of course depend on your needs and application. Reinforcing a gasket with a sealer is a completely different situation than when you need to create a gasket. If you need to bond two surfaces together, the sealant you purchase must also have this ability. Temperature. Some silicone gaskets are only rated for up to 300 degrees Fahrenheit. Others are formulated to withstand temperatures of up to 750 degrees. The use of a sealant for a water pump or a thermostat housing does not require high thermal properties like a sealant for an exhaust manifold.

Some silicone gaskets are only rated for up to 300 degrees Fahrenheit. Others are formulated to withstand temperatures of up to 750 degrees. The use of a sealant for a water pump or a thermostat housing does not require high thermal properties like a sealant for an exhaust manifold. type of donor. Aside from convenience, the type of caulk dispenser depends not only on the application, but also on the type of material you are working with (metal, plastic, etc.), the work area, and the work surface itself. The surface may have holes or ridges, so your sealer will need to take care of that, and the work area, e.g. An engine compartment, for example, may not give you enough space to use an aerosol can for delivery.

Best Gasket Sealer Reviews and Recommendations 2021

Best overall price Gasgacinch 440-A Check current price. Used by engineers worldwide, this sealant of choice adheres to any surface, has high tack and remains flexible once cured. The sealer works in all gasket and gasket situations, from water pumps to exhaust manifolds. It is well suited for work on cars, SUVs and trucks, diesel, gas and electric engines, as well as transmissions and trim.

However, be careful not to get the caulk on your hands. Wear flexible gloves when working with this as some users report that the caulk is difficult to remove without using strong chemicals. Also, there have been some reports about the reduced quality of the product compared to previous years.

Best Value Permatex Ultra Black Check Latest Price This sealant is safe for use near sensors. It is non-corrosive, durable and adheres well to oily parts. It resists many fluids in the powertrain such as transmission oil, engine oil, coolant and gear oil. The seal is highly flexible and eliminates the need for pre-cut or pre-formed cork, rubber and paper gaskets. It works for oil pan applications and valve, differential and timing covers. It also maintains sealing capabilities from -65 to 500 degrees Fahrenheit.

However, be careful when dispensing the product. It flows out easily and as a result you can easily squeeze out too much and it can end up where you don’t want it e.g. B. inside moving components. Some report that it is difficult to clean up.

Best Temperature Range Permatex Aviation Form-A-Gasket Check Current Price This Permatex gasket sealer dries slowly so you can assemble your parts. It works well for attaching cork, paper or rubber gaskets to vertical or horizontal surfaces. It resists grease, petrol and oil. You can use it for numerous aerospace and automotive applications such as tight gaskets, on tight machined surfaces and for sealing hoses.

Caution: Use this sealant in a well-ventilated area as the fumes from this sealant are very strong. Keep in mind that it doesn’t work very well on threaded fuel lines. Some users also report that the bottle might leak.

Premium Choices Permatex The Right Stuff Gasket Maker Check Latest Price Permatex has several sealants on the market and The Right Stuff is geared for use in the automotive industry. It works efficiently on components such as water pumps, oil pans, thermostat housings, and transmission and valve covers. The product has a continuous temperature range of minus 75 to 450 degrees Fahrenheit with an intermittent range of 500 degrees. The Right Stuff creates an instant, permanent, leak-proof seal by manufacturing an elastomeric rubber gasket. The seal resists chipping and prevents leaks and spills due to thermal expansion and vibration. It cures quickly, creating a seal that is somewhat soft but tough and solvent resistant.

A downside to this product is that it is very messy and it can also be difficult to get it out of the tube. As a result, you may need to use a regular seal tube to use it. There have also been some complaints of the nozzle breaking, making access to the seal difficult.

Honorable Mention Valco Hylomar Universal Blue Gasket Sealer with Nozzle Check current price. Many car manufacturers and Formula 1 teams use this non-setting and non-hardening gasket sealant. It is designed to seal gaps up to 0.25mm and to dress gaskets and threads. The product is resistant to vibration and can withstand severe temperature fluctuations. Hylomar Blue is resistant to liquids such as engine coolant, petroleum, lubricating oils and water. A little Hylomar goes a long way. It creates a leak-proof seal and is one of the best general purpose non-hardening gasket sealers on the market. Because it doesn’t fully cure, it’s ideal when you need to seal a joint that coolant or oil will flow through. For example, you can use it to seal camshaft covers on engines with overhead camshafts. If you want to keep oil in and everything else out, this is the perfect product.

There are only a few downsides to this caulk sealer. It can come loose over time if you let it sit in your tool box. Also, it’s a tough and sticky substance, and if you put it on the gasket and the surface and have to remove it, there’s a good chance you’ll ruin the gasket material.

Honorable Mention 3M High Temp Black Silicone Gasket Check Latest Price. Developed specifically for automotive engines, this gasket sealant from 3M cures quickly in place and is flexible and non-corrosive. It can withstand intermittent temperatures of up to 600 degrees Fahrenheit, is oxygen sensor safe, and resists water, oil, and ethylene glycol. You can use it as a sealing bandage or a sealing alternative. The product comes in a 3 ounce tube. 3M High Temp Silicone Gasket Sealer can be used on intake manifolds, oil and transmission pans, timing chain covers, thermostat housings and valve covers. It’s easy to use, just apply to a clean and prepared surface and you can start the engine 15 minutes after application. Subaru specifies this sealant as a replacement for their OEM sealant.

The biggest complaint about this product is that it can dry out and harden after a few months of storage if you don’t use the whole tube at once. Also, it doesn’t come with a graduated dosing tube which would make it easier to use.

Honorable Mention Bar’s Leaks 1100 Head Gasket Repair Check Latest Price Bar’s Leaks Head Gasket Repair is designed to fix coolant leaks. It features a combination of aramid and fireproof fibers making it strong and heat resistant. It penetrates leaks and forms a seal that is tougher than the original head gasket. The product is ideal for repairing blown cylinder head gaskets, stopping block leaks and sealing cracked cylinder heads. This gasket sealer works as advertised. It stops leaks instantly and the repair will last a long time as long as you follow the instructions carefully. Some users report that their engines run much better after using this product and that the engines are smoother and no longer hesitate. In addition, this seal is a little cheaper than some comparable products.

However, Bar’s Leaks 1100 Head Gasket Repair is not antifreeze compatible and you must only use it after you have flushed and removed the antifreeze from the cooling system, which can be a tedious process. If you don’t follow the process correctly, clogging problems can occur.

Honorable Mention Three Bond Engine Silicone Gasket 1211 Check Current Price Three Bond Engine Silicone Gasket 1211 is a semi-curing sealant that is tough and durable. It uses silicone rubber and comes in a 3.5 ounce tube. It is designed for use on gaskets, crankshaft seals, casing matting surfaces and more. It is tack free in 90 minutes and cures in 24 hours. The product is comparable to Yamabond and Hondabond and can be used for both motorcycle and automotive purposes. It is thicker than Permatex Aviation and is easy to apply and clean. It’s great for everything from sealing engine cases and gaskets to sealing a timing chain cover or lawn mower housing cover. A little goes a long way and it has a metal tip cleaner to clean the application tip so you can easily reuse it.

However, it takes a while to dry and it’s a little pricey. In addition, the seal is white, which may not be the best option for aesthetic reasons.

tips

Rarely do auto manufacturers recommend using a silicone or latex-based liquid sealant alone. Those who insist only a small amount is used.

When using a pinch hose sealant, use only what you need. Don’t blot it up and wipe off the excess. Otherwise you will pluck pieces of it from your oil.

Liquid spread-on gasket adhesives are recommended by transmission oil pan manufacturers because latex or silicone gaskets can break off and clog vital openings, damaging your transmission.

When using an exhaust component sealant, choose one with a high copper content to withstand the high temperatures found in exhaust systems.

Whether or not you use sealant, remove as much of the old gasket as possible without scraping or scratching the mating surfaces. If you don’t remove all old material, especially from grooves, or if you scratch the surface, you will cause leaks instead of sealing them.

frequently asked Questions

Q: What is the difference between a caulking adhesive and a caulking compound?

A: A gasket sealant is the gooey messy stuff everyone associates with gasket sealant. Gasket adhesive is more of an extra strong contact adhesive with properties that make it chemically resistant.

Q: Why use gasket glue or sealant when my part comes with a gasket?

A: Good question. Except in certain circumstances, a sealant is only used as an adhesive. It is to prevent the gasket from slipping during installation.

Q: My new oil pan came without a gasket. What should I use for caulking?

A: If using in place of an actual gasket, run a small bead of silicone or latex sealant around the rim of the pan outside of the bolt holes. Your bead should be no larger than 1/8 inch in width/diameter. Excess sealant can actually cause leaks.

Final Thoughts

Our choice for the best overall gasket sealant, Gasgacinch 440-A is the choice of professional race engine builders.