I just heard of yet another blown GReddy Renesis out here in the SF Bay area. It was running the new GReddy kit with the eManage Ultimate, stock boost, stock maps.

Theoretically, if the engine is well tuned it shouldn't substantially reduce its longevity. However, as others have pointed out, it does place more stress on it. Given that a lot of NA Renesis engines are failing, that makes FI even riskier.

Has anyone gotten over 50k miles on a boosted Renesis yet? I am starting to seriously doubt this engine can handle the extra power reliably.

I just heard of yet another blown GReddy Renesis out here in the SF Bay area. It was running the new GReddy kit with the eManage Ultimate, stock boost, stock maps.

Theoretically, if the engine is well tuned it shouldn't substantially reduce its longevity. However, as others have pointed out, it does place more stress on it. Given that a lot of NA Renesis engines are failing, that makes FI even riskier.

Has anyone gotten over 50k miles on a boosted Renesis yet? I am starting to seriously doubt this engine can handle the extra power reliably.

I don't oppose your general question, although some here will argue at length. I will, however, point out that there are not a " lot " of NA renesis motors failing. The numbers are truly small and mostly earlier automatics.

Paul.

The Greddy turbo kit as it comes is poorly tuned and needs a lot of work to be acceptable. I'm not terribly surprised the engine failed. It's not the engine's fault. It's the crap tuning that kit comes with.

^^^^^

Yup, the kit comes pretty poorly done for a "plug & play kit" as Greddy claims.

Even with great tuning this kit has turned out to be suspect (at least from my experience)

I just heard of yet another blown GReddy Renesis out here in the SF Bay area. It was running the new GReddy kit with the eManage Ultimate, stock boost, stock maps.

Theoretically, if the engine is well tuned it shouldn't substantially reduce its longevity. However, as others have pointed out, it does place more stress on it. Given that a lot of NA Renesis engines are failing, that makes FI even riskier.

Has anyone gotten over 50k miles on a boosted Renesis yet? I am starting to seriously doubt this engine can handle the extra power reliably.

Please, stop spreading B.S. when you dont even have any facts to back yourself up. and I would like to know where is that *Given that a lot of NA Renesis engines are failing* came from.

I think that an outfit like Mazsport has it right. Instead of offering a half ass attempt at a turbo kit using off the shelf products, and not even bothering to tune it for the car very well, Mazsport has looked at the car and designed a kit specifically for this car. From correct sizing the turbo, to actually working on the fuel system, to actually using the right kind of hoses, to an actually tuned FMU, the kit is made for the RX8 vs. the Greddy kit.

I think that an outfit like Mazsport has it right. Instead of offering a half ass attempt at a turbo kit using off the shelf products, and not even bothering to tune it for the car very well, Mazsport has looked at the car and designed a kit specifically for this car. From correct sizing the turbo, to actually working on the fuel system, to actually using the right kind of hoses, to an actually tuned FMU, the kit is made for the RX8 vs. the Greddy kit.And even then it still needs tuning!

Nothing works on this car right out of the box. Nature of the beast.

Yeah, luckily Scott is about a 1000X more helpful than Greddy. You pay a lot, you get a lot. Seems cool to me.

damn greddy is greedy

Yeah, luckily Scott is about a 1000X more helpful than Greddy. You pay a lot, you get a lot. Seems cool to me.That's for sure!

Please, stop spreading B.S. when you dont even have any facts to back yourself up. and I would like to know where is that *Given that a lot of NA Renesis engines are failing* came from.

The high failure rate of NA Renesis engines is a known problem. Mazda has even extended the powertrain warranty as a damage control effort. Please get your facts straight before breaking out the flamethrower, mate.

My hypothesis is that there are failure-prone components and/or an overall design flaw in the Renesis engine. This is exacerbated by the additional mechanical stress of FI.

If lots of Renesis engines survive 50k+ miles of FI duty, then I will consider my hypothesis disproven. If, on the other hand, we see lots of them grenading for reasons other than bad tuning, perhaps my hypothesis will become a theory and we can see if trends emerge (or can be discerned from the wreckage!).

Mazda knows the RX8 is underpowered and way under-torqued for the US market, they have been experimenting with FI Renesis for 3 years, and yet they have not offered an FI Renesis product. Considering this along with the high failure rate of NA Renesis engines, it is not unreasonable to suspect they may know something they're not divulging to the RX8 community.

As a purely selfish concern, I am debating whether or not to pull the turbo off my car so I don't have to replace the engine again.

if I had a dollar for every blown up NA Rensis, i couldn't even move you into the nicer section of your trailor park

if I had a dollar for every blown up NA Rensis, i couldn't even move you into the nicer section of your trailor park

First of all, that word you're trying to spell is 'trailer', not 'trailor'. :p:

Do you think they did this out of the goodness of their hearts?

http://www.finishlineperformance.com/rx8/docs/pdf/ad-18.pdf

Having been very poor myself at one time, it is nothing to joke about. If you have nothing substantial to contribute to the conversation, why don't you wank off elsewhere?

The recall was a result of trying to get all cars on the same ecu flash level and checking for any emissions or engine damage that could have been caused by the previous flawed ecu flashes. If you would do any kind of research beyond finding something on the internet and running with it, you would realize a very small percentage of engines were actually replaced - and you wouldn't look like another village idiot tr0ll boy.

but damn, you really made me look dumb spelling it trailor instead of trailer... congrats

All in all there was a very small percentage of naturally aspirated engine failures. Much less so than, for example, the first year of the E46 M3. An extended warranty means nothing. I have an early 04 (June '03 build), and I never got such a notice. Post some hard numbers if you have them, conspiracy theories serve no one.

The high failure rate of NA Renesis engines is a known problem. Mazda has even extended the powertrain warranty as a damage control effort. Please get your facts straight before breaking out the flamethrower, mate.

My hypothesis is that there are failure-prone components and/or an overall design flaw in the Renesis engine. This is exacerbated by the additional mechanical stress of FI.

If lots of Renesis engines survive 50k+ miles of FI duty, then I will consider my hypothesis disproven. If, on the other hand, we see lots of them grenading for reasons other than bad tuning, perhaps my hypothesis will become a theory and we can see if trends emerge (or can be discerned from the wreckage!).

Mazda knows the RX8 is underpowered and way under-torqued for the US market, they have been experimenting with FI Renesis for 3 years, and yet they have not offered an FI Renesis product. Considering this along with the high failure rate of NA Renesis engines, it is not unreasonable to suspect they may know something they're not divulging to the RX8 community.

As a purely selfish concern, I am debating whether or not to pull the turbo off my car so I don't have to replace the engine again.
The Renesis engine does not have a high failure rate. Please site in percentage an accurate respresentation of how many engines get replaced to how many cars get sold. What's high in your opinion? 1%? 10%? 50%? What's the number? You MUST know if you are claiming there is a high failure rate. There is zero excuse not to with a claim like that therefore you must in fact have one and can prove it with proper proof. I'll wait.

The engine's that have failed have been due to improper lubrication and oil cooling. Hardly and engine fault as ANY engine would fail under the same circumstances. That was a cooling and lubrication issue that had nothing to do with the engine itself.

The old 13B engine failures happened for a couple of reasons. The largest of which was a seal issue in the engine that was a mistake but the failure was still due to improper cooling and overheating. The other issue was with improper tuning when increasing boost on a map based system. Again, hardly an inherent design flaw of the engine.

There are only a couple of things that kill engines (rotary or otherwise). That is improper cooling, improper lubrication, and improper tuning. That's it. There is no flaw in the engine design or seal design that makes it likely to blow up. I'd sure like to see some metallurgical proof if anyone says otherwise. Again, I'll wait.

The Renesis engine does not have a high failure rate. Please site in percentage an accurate respresentation of how many engines get replaced to how many cars get sold. What's high in your opinion? 1%? 10%? 50%? What's the number? You MUST know if you are claiming there is a high failure rate. There is zero excuse not to with a claim like that therefore you must in fact have one and can prove it with proper proof. I'll wait.

The engine's that have failed have been due to improper lubrication and oil cooling. Hardly and engine fault as ANY engine would fail under the same circumstances. That was a cooling and lubrication issue that had nothing to do with the engine itself.

The old 13B engine failures happened for a couple of reasons. The largest of which was a seal issue in the engine that was a mistake but the failure was still due to improper cooling and overheating. The other issue was with improper tuning when increasing boost on a map based system. Again, hardly an inherent design flaw of the engine.

There are only a couple of things that kill engines (rotary or otherwise). That is improper cooling, improper lubrication, and improper tuning. That's it. There is no flaw in the engine design or seal design that makes it likely to blow up. I'd sure like to see some metallurgical proof if anyone says otherwise. Again, I'll wait.
Smell that people? That's the smell of someone who just got burned by rotarygod. :hahano:

tell 'em how it is!! :bottom: :flamed: :spank: :whipping:

Smell that people? That's the smell of someone who just got burned by rotarygod. :hahano:

Smells more like a troll to me

The Renesis engine does not have a high failure rate. Please site in percentage an accurate respresentation of how many engines get replaced to how many cars get sold. What's high in your opinion? 1%? 10%? 50%? What's the number? You MUST know if you are claiming there is a high failure rate. There is zero excuse not to with a claim like that therefore you must in fact have one and can prove it with proper proof. I'll wait.
I can't give you an exact number. (Not that it really matters - better than average or worse than average is more telling than "1.432 % failure rate")

From Consumer Reports, Overall reliability versus other sporty cars:
http://www.rx8club.com/attachment.php?attachmentid=94159

Problem areas for the RX-8:
http://www.rx8club.com/attachment.php?attachmentid=94158

Compared to its competitors, 350z:
http://www.rx8club.com/attachment.php?attachmentid=94155

Sti:
http://www.rx8club.com/attachment.php?attachmentid=94157

S2000:
http://www.rx8club.com/attachment.php?attachmentid=94156

Miata:
http://www.rx8club.com/attachment.php?attachmentid=94153

I would say the RX-8 is much worse than the competition on "Minor" engine issues and slightly worse than average on "Major" ones. (I don't know if flooding would be considered an engine or fuel system problem.)

Anyway, I would say both of you guys are right. Yes, the Rensis has issues but it usually isn't catastrophic. However, the Renesis doesn't appear to be any better than its competition. And to be fair Fred, you are making claims without any hard numbers yourself; anecdotal evidence can prove any type of engine is good or a lemon.

Let the fighting continue...

-Mr. Wigggles

Dummy post to get more pictures uplinked...

but damn, you really made me look dumb spelling it trailor instead of trailer... congrats

No, you accomplished that all by yourself. :cwm27:

Well, actually that's not totally accurate. The lack of chlorine in your gene pool & a questionable upbringing doubtless lent a hand.

No, you accomplished that all by yourself. :cwm27:

Well, actually that's not totally accurate. The lack of chlorine in your gene pool & a questionable upbringing doubtless lent a hand.
Guys, give it up...

You started the thread with a legitimate question. Stay on topic.

-Mr. Wigggles

Consumer Reports is not a valid reliability rating scale, sorry, until they actually verify their subscribers own the cars they report on by valid documentation they do not count for anything. Anybody that rates one car's reliability higher by a significant margin than another that is built on the exact same line based on the badge on the hood is incompetent at their profession (Pontiac Vibe/ Toyota Matrix, Ford Escape/ Mazda Tribute/Mercury Mariner). And when questioned on this by Autoline Detroit could not give a reason for this practice.

Mazda knows the RX8 is underpowered and way under-torqued for the US market, they have been experimenting with FI Renesis for 3 years, and yet they have not offered an FI Renesis product.

You're making random assumptions. Perhaps you should consider the impact of fuel economy - today's market isn't one that a 15 mpg car would sell well, even if it made 300 hp.


Considering this along with the high failure rate of NA Renesis engines, it is not unreasonable to suspect they may know something they're not divulging to the RX8 community.

Since you know of the failures, and since you're troubled by it, perhaps you shouldn't have bought an automatic and drove it around in the desert with only one oil cooler, before turbocharging it *.



* In case you aren't driving an automatic in the desert, perhaps you should have done more research on the topic before spouting gibberish. Since those are the cars that have seen most of the engine problems due to lack of oil injection.

The high failure rate of NA Renesis engines is a known problem. Mazda has even extended the powertrain warranty as a damage control effort. Please get your facts straight before breaking out the flamethrower, mate.

HAHAHAHAHAHAHAHAHAHAHAHAHAHAHA

This just shows how stupid you're. RotaryGod explain it for me already so, please, go and do your homework before you Talk out loud.

My hypothesis is that there are failure-prone components and/or an overall design flaw in the Renesis engine. This is exacerbated by the additional mechanical stress of FI.

If lots of Renesis engines survive 50k+ miles of FI duty, then I will consider my hypothesis disproven. If, on the other hand, we see lots of them grenading for reasons other than bad tuning, perhaps my hypothesis will become a theory and we can see if trends emerge (or can be discerned from the wreckage!).

RX8s just came out 3 something years ago and Most RX8s are still under warranty, what that means? that means MOST of the owners wouldnt even bother with any kind of FI. Remember we paid for a brand new car (most) and 1/2 of them are warranty cost and we want to enjoy them for a while first.

Do you even have any idea how many PISTON engines blew up in just 2006 alone? I cant tell you for sure, theres no way to tell of course. but why is it OK for pistons to blow up, and its like a sin for rotary ?

Mazda knows the RX8 is underpowered and way under-torqued for the US market, they have been experimenting with FI Renesis for 3 years, and yet they have not offered an FI Renesis product. Considering this along with the high failure rate of NA Renesis engines, it is not unreasonable to suspect they may know something they're not divulging to the RX8 community.

As a purely selfish concern, I am debating whether or not to pull the turbo off my car so I don't have to replace the engine again.

Who knows what they're thinking? Factory turbo/SS kit will NEVER be able to put out as much or more than MOST aftermarket units. unless there is a SERIOUS demand for it most companies wouldnt even bother.

maybe they think the world has too many stupid people like YOU, when something is wrong they wont blame themself for bad tunning or bad install, but the first thing they'll blame would be "This engine, Rotary sucks"

I can't give you an exact number. (Not that it really matters - better than average or worse than average is more telling than "1.432 % failure rate")

From Consumer Reports, Overall reliability versus other sporty cars:
http://www.rx8club.com/attachment.php?attachmentid=94159

Problem areas for the RX-8:
http://www.rx8club.com/attachment.php?attachmentid=94158

Compared to its competitors, 350z:
http://www.rx8club.com/attachment.php?attachmentid=94155

Sti:
http://www.rx8club.com/attachment.php?attachmentid=94157

S2000:
http://www.rx8club.com/attachment.php?attachmentid=94156

Miata:
http://www.rx8club.com/attachment.php?attachmentid=94153

I would say the RX-8 is much worse than the competition on "Minor" engine issues and slightly worse than average on "Major" ones. (I don't know if flooding would be considered an engine or fuel system problem.)

Anyway, I would say both of you guys are right. Yes, the Rensis has issues but it usually isn't catastrophic. However, the Renesis doesn't appear to be any better than its competition. And to be fair Fred, you are making claims without any hard numbers yourself; anecdotal evidence can prove any type of engine is good or a lemon.

Let the fighting continue...

-Mr. Wigggles

Wrong, it has been proven that the problem is within the insufficient oil lubatation (Mazda TSB) and insufficient oil cooling (Most of them are AT cars with 1 oil cooler)

The rest of the failed 6 port Engine? well, the numbers are actually very very very VERY minor. I cant get any exact numbers (impossible for me to get any), but just by checking out all the RX8 forums around the world.

Then you'll know these :

AT cars with 1 Oil Cooler (Whole World)
AT 4-ports and MT 6 Ports thats within the USA market, I think this one has something to do with our wonderful 5w20, the rest of the world does not even have the MOP TSB thing, only we do. Why ? Think of it yourself.

I wouldnt say Renesis is doing any better than the rest of the market, but it certainly is not the root of the problem.

My intent for this thread was neither to categorically excoriate nor praise the rotary per se. The FD guys seem to have struck a pretty good balance between big power and big problems.

I was genuinely hoping that people wouldn't get emotional and go asymptotic to the vertical. This car has its good points for sure, but it is a fact that we don't have the data to prove its long-term reliability in FI apps. We don't yet have the data to prove it isn't reliable in FI trim, either.

Maybe the high incidence of engine failure in NA trim that Mazda acknowledges (the search button is your friend) was simply due to inadequate oil flow at lower RPMs. Then again, maybe there are other problems too. How do we know the side port design is durable? We don't know one way or the other yet. That's a fact.

I just heard of yet another blown GReddy Renesis out here in the SF Bay area. It was running the new GReddy kit with the eManage Ultimate, stock boost, stock maps.

Theoretically, if the engine is well tuned it shouldn't substantially reduce its longevity. However, as others have pointed out, it does place more stress on it. Given that a lot of NA Renesis engines are failing, that makes FI even riskier.

Has anyone gotten over 50k miles on a boosted Renesis yet? I am starting to seriously doubt this engine can handle the extra power reliably.

Forgot to add my words on this one.

It has been PROVEN that the GReddy kit came with garbage plastic pipe(whats the word, I forgot), garbage undersize turbo thats over spinning too much, and at last, the garbage tunning.

You can fix the first one by replacing it with better ones, some silicone ones should do. Search around u'll see alot of post come up.

Second one, its a bit hard, the turbo itself IS undersize BUT with proper tunning, it should be able to do its job.

Last, BAD FREAKING TUNNING, I have no idea what are they thinking, but the stock tune freaking suck. I guess Greddy never really paid any special attention to it, and what they did was just alot of cover ups of their mistakes, E-Manage Blue was a damn joke, even EMU aint that good .... better than nothing of course. Look at the new kit, it even came with a BLOCKING plate, they hope that could solve their problem .... they gotta be kidding me.

Not to mention all other problems like too much oil going into the Turbo ? ahh

You just heard of anotehr blown Greddy in the SF bay Area? stock maps and stock kit ? No research and he just dump it in? He deserves it.

My intent for this thread was neither to categorically excoriate nor praise the rotary per se. The FD guys seem to have struck a pretty good balance between big power and big problems.

I was genuinely hoping that people wouldn't get emotional and go asymptotic to the vertical. This car has its good points for sure, but it is a fact that we don't have the data to prove its long-term reliability in FI apps. We don't yet have the data to prove it isn't reliable in FI trim, either.

Maybe the high incidence of engine failure in NA trim that Mazda acknowledges (the search button is your friend) was simply due to inadequate oil flow at lower RPMs. Then again, maybe there are other problems too. How do we know the side port design is durable? We don't know one way or the other yet. That's a fact.

Renesis, its stronger than any Rotary engine that has ever been build.

It takes ALOT of time to tune something thats different. You Have to remember that.

FI will always kill the engine faster than NA, thats science. Most earlier N/A Rotary last over 200K without a sweat. I dont see anybody mention that.

We're not hating you or whatever, the reason you're getting these kind of *feedbacks* were due to the fact that you have nothing to back yourself up.

All you did was come up, and said *I heard another Greddy blew up, this engine sucks, it cant handle FI*

I find this funny actually, an engine that has been build from the ground up to be NA, people dump some turbo in it without any tune or fixes, when something happens they blame the engine, not themselfs. they actually trust whatever the FI company told them, in this case, it would be GReddy's *Plug and play* funny funny.

"Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away."
- Antoine de Saint Exupery

From the factory the car was not designed for forced induction. So you bolt a turbo on and expect it to work? I am not saying the Renesis can not be supercharged. What I am saying is that if you are going to push something beyond what it is mechanically designed for in the first place you will have to fix all the weak links before hand.

The problems with rotary cars is not something new. It's been discussed here and at the 7 forums countless times. My first car that I made go fast was a mustang and I broke almost everything attached to the car including the windshield wipers!

If you want to go fast you got to pay to play. Not every price you pay is with your wallet. Experience and knowledge are the price as well.

Instead of arguing whether or not the Renesis can handle forced induction a more constructive topic would be "What are the weak links to the RX-8 and at what power levels do they appear?"

My intent for this thread was neither to categorically excoriate nor praise the rotary per se. The FD guys seem to have struck a pretty good balance between big power and big problems.

I was genuinely hoping that people wouldn't get emotional and go asymptotic to the vertical. This car has its good points for sure, but it is a fact that we don't have the data to prove its long-term reliability in FI apps. We don't yet have the data to prove it isn't reliable in FI trim, either.

Maybe the high incidence of engine failure in NA trim that Mazda acknowledges (the search button is your friend) was simply due to inadequate oil flow at lower RPMs. Then again, maybe there are other problems too. How do we know the side port design is durable? We don't know one way or the other yet. That's a fact.

it is a bit of this and that... they have been tunning on the fd for years.. the rx8 for about 18 months.. and greedy could not buy a vowel if anna nichole was still alive....

the data is moving as fast as it can. so someone else blew a greedy.. or some tunner said the rx8 motor should not be fi...

but others prove them wrong... btw, check the 350z forums for motor failures.. they happen....

SO WHAT WAS YOUR INTENT?

beers :beer:

I am going to try to make this thread a little bit more constructive and I'm sure (and hope)other people will chime in to expand the topic. Also I apologize before hand for moving the thread a little off topic.

"What are the weak links to the RX-8 and at what power levels do they appear?"

Renesis: The engine itself seems to be more forgiving than any past rotary. The only thing I can recall wrong with it is coating failure and at the very beginning there was a big controversy on a chip developing on one of the ports.

Lubrication: Rotary engines in general need more detail to oil than piston engines. The weak points seem to be keeping the oil cool (AT owners have 1 oil cooler) and oil injection. Racing beat has the OMP modification to address that issue and we now have the SOHN oil adaptor. Also Greddy has a larger oil pan to increase the capacity of the oil which in turn increases heat capacity as well.

Cooling: Oil is already covered so I will cover water. The mazsport fan mod is available and the Racing beat flash does the same thing. This seems to be a must for any power level. Aftermarket radiators are available, but I am unsure at what power level they would be needed. Maybe someone more knowledgable can give a good answer.

Fuel: At 300 horsepower or so is the max the injectors can hold. Larger fuel injectors are out and can be used with an aftermarket EMS. The fuel pump can go up to ~400 horsepower but is not up to the task sometimes even on stock levels. Mostly during long left hand sweepers. This is being investigated by olddragger right now. Mazsport has a aftermarket fuel pump out right now that addresses the short comings of the factory system.

Ignition: Probably the area of the least support right now. The coils seem to go out without throwing a CEL. The sparkplugs seem to have short lifespans mostly from running too rich that is caused from cat protection and other problems that get compounded. There seems to be 2 options with coils. Replace the old coils with new OEM coils. Or use the AEM or HKS coil systems. The latter are still be researched. Also MazdaManiac said something to the effect that the timing will change with the aftermarket coil system.

EMS: There doesn't seem to be an ideal EMS solution. From the research MazdaManiac has done it seems the E-manage Ultimate and MicroTech based EMS's need alot of work and in some ways just are not good enough. Maybe he(or someone else knowledgable) can chime in because I do not want to give out bad information. He has written alot about both of them extensively already and if anyone new is reading this look up the following thread:
http://www.rx8club.com/showthread.php?t=101869

Drivetrain: To my knowledge TeamRX8 and everyone from Puerto Rico have the most experience with the transmission. 2nd gear goes out when power levels go up or you use your car competively. The clutch also has a few cases of going out from the factory but it seems more like a defect then an actual problem.

Please expand on any and everything. I am sure I left out a few things. I do not think anyone who has had a blown engine has yet to cover all their bases yet. Also tuning goes hand in hand with an EMS.

Wrong, it has been proven that the problem is within the insufficient oil lubatation (Mazda TSB) and insufficient oil cooling (Most of them are AT cars with 1 oil cooler)
So if you do everything right with the Renesis you won't blow it? You're probably right, but that can be said for just about any engine.

"Add a big oil pan, fix the oil heating problem, improve the overall cooling, increase the injectors, improve the ignition, and tweak the EMS and then the engine will be fine."

The above statement could be said for any well built Japanese engine; However, I personally consider most of those mentioned items as part of the engine. If you consider the engine to just be the rotors and the case then I guess your right; those rarely fail unless something else fails ... with the engine.

-Mr. Wigggles

So if you do everything right with the Renesis you won't blow it? You're probably right, but that can be said for just about any engine.

"Add a big oil pan, fix the oil heating problem, improve the overall cooling, increase the injectors, improve the ignition, and tweak the EMS and then the engine will be fine."

The above statement could be said for any well built Japanese engine; However, I personally consider most of those mentioned items as part of the engine. If you consider the engine to just be the rotors and the case then I guess your right; those rarely fail unless something else fails ... with the engine.

-Mr. Wigggles

the issue is the guy asking the ? is wanting the quick fix, without the work..

read his past posts......

note. the first greedy kit, was bad.
the next was less bad.. mm, and maddog helped fix the kits....

this is not a motor issue, it is learning how to tune the motor issue... it is new...

thanks to those that are able to figure it out for the rest of us tards...


knowledge is power. and mm has my vote.

beers :beers:

"What are the weak links to the RX-8 and at what power levels do they appear?"

.

Taking the renesis to just under 300 hp seems to be relatively simple & for those of us not willing to 1/Spend too much or 2/compromise our daily driver too much - this power level will be what we will aim for .
Over that will only suit those that have especially deep pockets & are willing to accept other compromises to the vehicles reliability/driveability.

HeavyMetal, thanks for helping me get this thread back on track.

When I had my Renesis rebuilt, it got ported, bigger injectors, RB oil pump mod, racing clutch, and a stand-alone EMS with full control of fuel, spark, and boost. It already had the bigger oil pan.

The fuel pump and fan mods sound worthwhile too. An additional oil cooler and more cooling capacity from the radiator would be good, but I haven't seen enough data on these to know what to buy or how to install them.

What I really wish for is low compression rotors, but no one has commercialized them yet and it's way too expensive to get one-offs built.

Are all the other engine internals solid enough? The 3 mm apex seals are way expensive since they have to be custom machined to fit the Renesis. Would they really make that much of a difference anyway? A few really hard pings under boost would probably snap them just like the 2 mm ones. What about the bearings, seals, and other components? They haven't been stress tested enough yet. Could there be asymmetric thermal stress caused by the side port design itself?