Top 50 How Much Power Can A 13B Handle Top Answer Update

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Contents

How much HP can a 13B make?

The block itself, if built properly, can make 650+ rwhp. It’s all the attributes (turbo, fuel, tuning) that determine how much power you will make.

Are 13B rotary engines reliable?

The 13B-REW is not a reliable engine if it is not properly taken care of. While the 13B gets a bad reputation for reliability, it is often caused by negligent owners. However with that being said, the 13B REW does have a number of common problems of its own that tend to occur regardless of maintenance.

How much power can a rotary engine make?

For it’s size, the rotary packs a punch. For reference, the 13B from the RX8 is a 1.3 liter, and produces 232 horsepower. That equates to a ridiculous 178 horsepower per liter. In Theory, that would be equivalent to a 6.0 liter LS2 (from the Corvette) producing 1068 horsepower N/A from the factory.

How much power can a 20B make?

20B Racing Engine Specs

Capacity: 1,962 cc – 654 cc x 3 rotors (2L) Compression ratio: 9.4:1 (Presumed, based on 13G) Induction: Naturally aspirated. Horsepower: 440 hp at 8,500 rpm.

How many cc is 13B rotary?

However, the longer 13B benefited from additional displacement from the thicker rotor design, with each chamber displacing 654 ccs, bringing the total capacity to 1,308 ccs (1.3L.)

What does 13B-REW stand for?

13B-REW denotes a twin turbo 13B…. either FD or Jspec Cosmo. I agree, REW stood for twin turbo. RE stood for rotary engine and appeared on the badges of early rotary cars such as the RX-2. It was sometimes added to the 13B engine designation when it came out in the RX-4.

Can you put a 13B into a RX-8?

If you’ve considered swapping your original RX-8 Engine for a 13B RX-7 REW Engine, our Stainless Steel 13B Engine Swap Kit will make the task significantly easier. Our mounting kit is designed to allow the 13B-REW engine to be bolted directly into your Mazda RX-8 chassis and mated to the factory RX-8 transmission.

Why do rotaries flood?

Fuel injected rotary powered cars are prone to flooding by nature. It can be as simple as old plugs or ignition wires, to as complex as intermittent EFI computer malfunctions. The most common problem is not really a defective part or failure, but a “bug” found in the EFI system.

Why are Mazda RX-8 so cheap?

Poor Fuel Economy & Daily Drivability

Another reason why the RX8 is cheap to buy now is because many are put off by the poor fuel economy of the car. Rotary engines might be small in size (and produce substantial power relative to that size) but they have a tendency to be thirsty.

How much HP can a RX-8 handle?

Mazda RX-8 Power Limits

A bit underwhelming off the bat compared to its 13B-REW predecessor. On a dyno, a completely stock RX-8 will put down around 180-185whp and ~140wtq. A naturally aspirated Rx8 can produce around 225whp which is considered maxed out. Bolt-on mods can get you around the 210whp mark.

How high can a rotary Rev?

The rotary delivers power linearly all the way to 7,000 or 8,000 RPM, depending on engine specifics, and that flat power band sets it apart from rev-happy piston engines that too often pour on the power at high RPM while feeling gutless at low RPM.

Why do rotary engines rev so high?

Rotary engines are also known for revving high, and that’s because in eschewing pistons altogether, they don’t have any reciprocating mass, just rotational mass. You also need lots of air, which is why the Honda S2000 employs variable lift on its intake valves.

What’s the biggest rotary engine?

It’s a 12-rotor Wankel, which, for reference, is three times the number of rotors found in Mazda’s Le Mans–winning 787B. The engine consists of three banks of four rotors each.

What car came with a 3 rotor?

The Eunos Cosmo was the top-line touring flagship of the Eunos luxury channel. It is the only Mazda to use a triple-rotor engine. The car was a 2+2 coupé and was loaded with power amenities.
…
Series JC (Eunos Cosmo, 1990–1996)

Series JC
Production	1990–1996
Body and chassis
Body style	2-door coupé
Powertrain

Is the RX-8 a 3 rotor?

Built by Markus Van Klink, who’s won historic rally championships down under in a RX-7, for rally and hillclimb racing, this rally-fied Mazda RX-8 features a three-rotor 20b engine that sends a claimed 370 horsepower to the rear wheels and the rear wheels alone.

Can a rotary engine be reliable?

Rotary engines are known for being typically unreliable, but the issues are somewhat easy to resolve.

How many miles does a rotary engine last?

Those apex seals don’t tend to last long before they need replacing, either. Rebuilding a Wankel at 80,000-100,000 miles is typical, and earlier than most piston engine need such exhaustive work.

How much does it cost to rebuild a 13B?

Engine Rebuild Pricing

Part #	Year/Model	Total (New Rotor Housings)
ARE1105	84-85 13B	$5299
ARE1106	86-88 N/A 13B	$6549
ARE1107	87-88 13B Turbo	$6499
ARE1108	89-91 13B N/A	$6699

What is the most common failure of a rotary engine?

Burn Baby Burn

By design, the rotary engine burns oil. There are oil squirters in the intake manifold, as well as injectors to spray oil directly into the combustion chamber.

Back on the Dyno with Project Redline | Mazda Rotary 13B turbo | fullBOOST

How much power can 13b take? – RX7Club.com – Mazda RX7 Forum

Article author: www.rx7club.com
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Summary of article content: Articles about How much power can 13b take? – RX7Club.com – Mazda RX7 Forum It can take quite a bit. However, it all depends on air: how much air are you bringing in. You want to make more power, you need a larger turbo. Realistically, … …
Most searched keywords: Whether you are looking for How much power can 13b take? – RX7Club.com – Mazda RX7 Forum It can take quite a bit. However, it all depends on air: how much air are you bringing in. You want to make more power, you need a larger turbo. Realistically, … How,much,power,can,13b,take,13b, 13bt, 2nd, 93, engine, gen, handle, horse, horsepower, hp, make, motor, power, rotary, rx7, stock, How much power can 13b take?, mazda, mazda forum, mazda forums, mazda rx7, mazda rx-7, rx7 forum, rx7 forums, rx7, rx8, mazda rx8, rx-8, rotary engine, mazda speed, mazdaspeed, turbo, supercharger, ings, auto exe, veilside, r magic, rmagic, 13b, 20b, tuner, tuners, turbo kit, turbo kits3rd Generation Specific (1993-2002) – How much power can 13b take? – I have a 05 evo 8 Mr and was looking to sell it for something rwd and that is turbo also. I have seen 3rd gens going for pretty cheap where i live and had a few questions. First my evo is making around 350whp, what would it take to make the rx7 get…
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How much power can 13b take? – RX7Club.com – Mazda RX7 Forum

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How much power can 13b take?

How much power can 13b take?

I have a 05 evo 8 Mr and was looking to sell it for something rwd and that is turbo also. I have seen 3rd gens going for pretty cheap where i live and had a few questions.

First my evo is making around 350whp, what would it take to make the rx7 get to that power range?

Second how much power can the stock 13b handle? From what i read if i bought a 3rd gen i would want to rebuild the motor asap. Since i dont know the history of the car/motor i wouldnt want to chance it.

I have seen some pretty awsome 20b vids but i know that it would be a pain/ money pit. Also the LS1 v8 swaps i think are pretty dumb, its not a rx7 anymore if it doesnt have a rotory motor imo. If i wanted a LS motor i would just get a vett. Whats the most HP you can get out of a 13b with say 93 octane and alky injection?

The 5 Most Common Mazda 13B REW Engine Problems

Mazda’s 13B Rotary engine was initially launched in 1973 in the Mazda RX-4. With a lifespan of almost 40 years, the 13B is the most produced rotary engine used in production cars. With respect to the RX-7, the 13B was first used in 1984 FB GSL-SE models.

The 13B is part of Mazda’s Wankel Rotary engine line, named after Felix Wankel, the inventor of the rotary engine. Prior to the 13B variant, Mazda was using the 12A, a 1.2L twin-rotor engine produced from 1970 until 1985. The 12A powered the RX-series Mazda’s up until the FC RX-7.

The 13B has had 6 different versions throughout its longevity, 5 of which where used in RX-series cars. The 13B-REW powered the Mazda RX-7 FD, or FD3S, from 1992 until its retirement in 2002. With a twin-turbo setup, an overengineered engine, and a sporty design, the 13B REW and RX-7 FD remain highly sought after cars even to this day.

13B Engine Variants

13B AP (RX-3 and RX4)

13B-RESI (FB RX-7 – GSL SE models only)

13B-DEI (FC RX-7)

13B-RE

13B-REW

13B-MSP Renesis

13B REW Sequential Turbocharger System

The early 90’s was a tuner-era for Japanese sports cars. In an effort to compete alongside German performance cars, such as BMW’s E36 M3, and American Muscle cars like Ford’s 5.0 Mustang, Japanese manufacturers were overengineering their sports cars and packing them with turbochargers to make big power in small, lightweight cars. The RX7 and Toyota’s Supra are the two best examples of this.

To compete on power with a 1.3L engine, Mazda added a sequential turbocharger system to the 13B REW. The sequential system used two turbochargers, one smaller and one larger, that operated sequentially. The first, smaller, turbo provided boost up until 4,500rpm’s when the larger turbo then kicked in to power the engine from 4,500rpms until redline.

This was the first ever mass-produced sequential turbo engine ever made. And this turbo system is a primary driver of a lot of the common engines problems the 13B REW faces due to the amount of excessive heat it produces.

Mazda RX-7 13B REW Common Engine Problems

Apex Seals & Low Engine Compression

Catalytic Converter Failure

Vacuum, Radiator Hoses, and Wiring Harness

Rigorous Maintenance Requirements

Cracked Turbo Manifolds

Before we dig into the problems themselves, it’s worth noting that Rotary engines require a lot of special attention. The 13B-REW is not a reliable engine if it is not properly taken care of. While the 13B gets a bad reputation for reliability, it is often caused by negligent owners. However with that being said, the 13B REW does have a number of common problems of its own that tend to occur regardless of maintenance.

1. 13B-REW Leaking Apex Seals

Compared to a traditional combustion engine with 40+ moving parts, the 13B REW only has three moving parts: the two rotors and the crankshaft. Rotors are shaped like rounded triangles and rotate in a circular motion inside of an oval shaped housing. Because of its triangular shape, the only parts of the rotors that touch other metal are each of its corners.

To keep compression high, the three triangle tips must keep an airtight seal in the housing. Each corner of the triangle has a seal, called an apex seal, that is pushed against the rotor housing with a spring to form the airtight connection. Apex seals are generally made of metal, and because the housing is also metal, the seals need to be lubricated with oil.

On the FD RX-7, the apex seals are one of the most common ‘engine killers’. Because the seals require constant oil, the 13B actually consumes oil in excess of traditional engines. Therefore, additional oil usually needs to be added every few months.

Both excessive heat from the engine and a lack of oil can cause the apex seals to become worn or cracked. When this happens, the seals lose their airtight connection and the engine loses compression.

Symptoms of Bad Apex Seals – 13B Rotary

Rough idling

Engine shuts off during idle

Misfires

Big power loss and lack of acceleration

Low compression can cause a number of issues within rotary engines. The most notable symptom is going to be a big loss of power. However, if there is just a very small pressure leak, the loss of power might not be immediately noticeable.

Preventing or Repairing 13B REW Failed Apex Seals

The best way to prevent leaking apex seals is to make sure your rotary is constantly full-up with fuel. Keep an extra quart of oil in your trunk and frequently check oil levels to make sure they are not too low. The FD RX-7 tends to burn approximately 1 quart of oil for every 2,000-3,000 miles. However, consumption certainly varies by engine so I always recommend topping the 13B off every 1,000 miles just to be safe.

Unfortunately, it’s not just lack of oil that can cause the apex seals to leak. Natural wear and tear on the seals is a normal and unavoidable. On a poorly maintained 13B REW the apex seals can go bad within the 50,000-80,000 mile mark, while on a well-maintained one they can usually last from 120,000 to 150,000 miles.

If you have bad apex seals, you will need to rebuild the engine, or at least completely tear it down to replace the seals. Since they are located within the rotor housing, there is no other way to get to them. If you are replacing your seals, I would recommend using a good aftermarket/high-performance set.

2. Catalytic Converter Failure

The 13B REW uses two catalytic converters. The first cat is located within the downpipe, and the second “main” unit is located after it. Because the sequential twin-turbo system generates a lot of engine heat, the first catalytic converter is prone to burning up and clogging up the main catalytic converter.

When this happens, the exhaust air flow becomes restricted, pushing the air back into the engine and causing engine temps and exhaust gas temps (EGT’s) to skyrocket.

The most noticeable symptom of a clogged main cat is excessive EGT’s. As this causes internal engine temps to increase, it can have catastrophic damage on the engines internals and the apex seals leading to total engine failure. The best option for preventing this issue is to install a catless downpipe on your FD RX-7. While this can create issues passing emissions tests, removing the cat will improve exhaust air flow and actually lower internal engine temps which will prolong the life of your 13B.

3. Vacuum, Radiator Hoses, and Wiring Harness Failure

While the 13B REW is generally a small engine, it is also crowded into a pretty small engine bay. Because of the excess heat that the sequential turbo system produces, the temperatures within the engine bay are also very high. The excessive heat causes a number of frequent failure points across various hoses and wires located within the engine bay. Failure of these parts can cause electrical malfunction, boost leaks, engine overheating, and a number of other potentially dangerous problems.

Vacuum Hoses

Vacuum hoses must maintain internal pressure to function properly. The excessive engine heat can cause these hoses to harden and crack. When this happens, air can leak from the hoses, reducing pressure and causing a loss of power and overall performance. We recommend replacing all vacuum hoses with wrapped silicone hoses which can withstand much higher temperatures. The materials are super cheap but it is a rather labor intensive job, requiring 5-6 hours of work.

Radiator Hoses / Expansion Tank

The 13B’s radiator and coolant hoses, especially the ones that connect to the turbos, are also prone to warping and cracking. Additionally, there is a radiator/coolant expansion tank that is prone to failing. We recommend replacing the coolant hoses with high temperature silicon hoses. Also, there is a simple $30 modification that will completely remove the expansion tank and therefore prevent it from failing.

Wiring Harness

Again with the excessive heat, the wiring harness can also make the wiring harness brittle and prone to failure. When this happens, it will cause a number of electrical problems.

4. RX-7 FD Cracked Turbo Manifold

The 13B REW turbo manifold, or exhaust manifold, connects the turbochargers to the exhaust system and passes air out through the exhaust system. Rotary engines, like all other traditional engines, experiences heat cycles. Heat cycles are simply the heating and then cooling of engine components and occurs when you warm an engine up and them turn it off and let it cool down.

The turbo manifold is made of metal, and metal expands under heat and contracts when cold. The constant expanding and contracting in conjunction with being connected to the vibrations of the engine cause the manifold to develop cracks in the metal. These cracks can either be small hairline cracks or larger, noticeable cracks.

Small hairline cracks likely won’t cause a very noticeable performance decrease, but once a crack exists it will continue to deteriorate. Once a larger crack forms, air will begin to slip out of the cracks and therefore reduce pressure within the engine. When pressure reduces, turbochargers become less efficient and have to work harder to produce the same amounts of power. Ultimately this puts added stress on the turbos, which can cause them to fail, and will also cause power loss.

Cracked Turbo/Exhaust Manifold Symptoms

Low boost, lack of ability to produce boost

Lack of acceleration, loss of power

Exhaust smells inside of the cabin

Whining or whistling sound from the engine

Manifold Replacement Options

If the cracks are small, there probably won’t be too much of a noticeable power impact. Therefore, most people will say you can continue to drive your engine normally until the cracks become bigger.

Once the cracks become large enough for a material amount of air to begin escaping, the only replacement option is the replace the manifold itself. A new manifold itself will likely run you around $1,000 and labor for replacing it will also run around $1,000 unless you are capable of DIY’ing the repair.

5. Rigorous Maintenance Requirements

While this isn’t necessarily an engine problem in itself, it does cause a lot of engine problems. These engines require proper maintenance and care. The majority of catastrophic failures with these engines are caused by owners who are not responsible or aware of the requirements of owning a rotary engine powered car.

While you should follow the recommended maintenance schedules, here are a few important items to keep in mind:

Add 1qt of oil every ~2,000 miles

Change the oil and filter every 3,000 miles

Only use non-synthetic oil

Never shut the engine off when it’s cold

A redline a day keeps the mechanic away (seriously, redlining it is good for the engine)

Prevent overheating

Heat is the killer of these engines. There are a handful of cooling system modifications that can be made for under $100 that can drastically improve the reliability of these engines. Check out the link in the next section for a detailed list of cooling mods.

Mazda FD RX-7 & 13B REW Reliability

The 13B REW can be a reliable engine. These engines were never made to be 300,000 mile cars. They require special attention and are not the cheapest cars in the world to maintain.

On a poorly maintained engine, expect to rebuild it by the 80,000 mile mark. For meticulously maintained 13B’s, you can likely get beyond 120,000 miles before a rebuild is needed. The biggest killer of FD 13B REW engines is excessive heat. We recommend cooling system upgrades such as an aftermarket radiator, dual oil coolers, etc. Here is an awesome guide on 13B REW Cooling Upgrades.

With all that being said, these engines have a finite lifespan. Reaching the 150,000 mile mark with any major issues is possible if properly maintained. However, a majority of these engines will fail before that period, and if they do make it that far, they likely don’t have much left in them. Maintain the engine as if you want it to last forever, but understand that a complete rebuild will be a necessity at some point during the 13B REW’s life.

Upgrade the cooling system, replace the vacuum and radiator hoses, remove the downpipe catalytic converter, keep the engine well lubricated with oil, and follow the recommended maintenance schedule and the 13B REW will be bulletproof.

As far as the engine and its internals, the 13B REW can handle up to 700whp without any internal modifications necessary. The stock turbos are solid but they are generally capped at about 350whp and 15psi of boost. If you want to produce power beyond those levels, an upgraded set (or single turbo) will be required.

Advantages and Disadvantages of a Rotary Engine

What the hell is a Rotary Motor anyway? What’s all this about rotors and NO PISTONS!? Blasphemy! Actually, it’s quite simple really. As opposed to a piston motor which has a Compression and Ignition phase for each cylinder, the Rotary does it all in one rotation of the triangle shaped rotor.

Advantages

The Rotary Engine is very simple. It’s a motor design that utilizes way less moving parts than it’s piston counterpart. The 13B-MSP Renesis (from the RX8) has the highest horsepower per displacement of any naturally aspirated motor produced from the Factory in America. For it’s size, the rotary packs a punch. For reference, the 13B from the RX8 is a 1.3 liter, and produces 232 horsepower. That equates to a ridiculous 178 horsepower per liter. In Theory, that would be equivalent to a 6.0 liter LS2 (from the Corvette) producing 1068 horsepower N/A from the factory.

Unlike Piston engines, Rotaries are almost immune to catastrophic failure. In a piston motor, you can have a piston seize and cause all kinds of damage, but in a Rotary motor, while the engine will lose power, it will continue to produce a limited amount of power until it finally dies.

Rotaries will also rev to the moon and still make power. For instance, A RX8 redlines at 9k and that’s where it makes peak power as well. Needless to say, the Rotary likes to stay high in the RPM range.

Disadvantages

Some main complaints of the Rotary are gas mileage and burning oil. One of the most common misconceptions is that the Rotary engine burns oil out of fault, this is not necessarily true. The Rotary uses oil squirters that take small metered amounts of oil and mix it into the fuel to lubricate the seals. Gas mileage is very Mehhhhh at mid 20’s (supposedly….much less in reality.)

Rotaries also tend to produce about as much torque as a screwdriver and seals tend to be a big problem after a while if you live in a colder climate. Parts are generally expensive and since it’s a Rotary, you have to take it to rotary mechanic or dealership to get it worked on when something goes awry.

Rotaries sometimes have a problem flooding with fuel on cold starts as well. This generally only happens with older 13B’s, so it’s necessary to let the motor warm up to operating temperature before you decide to take off.

All in all, the rotary has it’s ups and downs, just like everything else. Nothing can really match the sound of a 26B sounding like a huge cammed V8 at idle and then revving up like a streetbike. Hopefully this article was informative and cleared up some misconceptions. Rotaries may be different, but they’ll always have a place in my heart.

So you have finished reading the how much power can a 13b handle topic article, if you find this article useful, please share it. Thank you very much. See more: how much boost can a 13b handle, 1000hp, 13b, 13b max hp stock internals, 13b-rew, 13b engine, 13b engine for sale

Top 50 How Much Power Can A 13B Handle Top Answer Update

How much HP can a 13B make?

Are 13B rotary engines reliable?

How much power can a rotary engine make?

How much power can a 20B make?

How many cc is 13B rotary?

What does 13B-REW stand for?

Can you put a 13B into a RX-8?

Why do rotaries flood?

Why are Mazda RX-8 so cheap?

How much HP can a RX-8 handle?

How high can a rotary Rev?

Why do rotary engines rev so high?

What’s the biggest rotary engine?

What car came with a 3 rotor?

Is the RX-8 a 3 rotor?

Can a rotary engine be reliable?

How many miles does a rotary engine last?

How much does it cost to rebuild a 13B?

What is the most common failure of a rotary engine?

How much power can 13b take? – RX7Club.com – Mazda RX7 Forum

How much HP can a 13B handle? | WapCar

The 5 Most Common Mazda 13B REW Engine Problems – Mazda RX-7 FD

Advantages and Disadvantages of a Rotary Engine – National Speed

Ultimate Mazda 20B Engine Guide | Drifted.com

Mazda 13B-REW Build – Target: 700 WHP

Ultimate 13B Rotary Engine Guide | Drifted.com

13b questions. : RX7

How much power can a completely stock 13b rew make safely- stock port- oem seals. Can I slap a gt42 on it? – SomeSpeed

How much power can 13b take?

The 5 Most Common Mazda 13B REW Engine Problems

Advantages and Disadvantages of a Rotary Engine

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