Ok i know im gonna get flamed but oh well...

okay my heart is desired for a faster car... dont get me wrong but i LOVE this car to death. but its slow...

i was thinking... what do you experts have to say about this engine... To ME is seems like its so friggen fragile and you cant push it hard... So with all the FI comming out do you think it will harm the engine and its life span? and is there still hope to beieve to get this car running faster? With the greddy it seems liek people are getting high 13's if anything...

IF not FI is it possible to swap engines for a 3rd gen rx7 engine and perhaps twin turbo? ahhahah

thanks.

FLAME ON

 

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From all I hear about the twin turbo 13b REW, it's so not worth it. I promise you that someone will find a way(s) to make this car damned fast. I think Abel Ibarra(sp?) ran a 6 second quarter mile with this car
Seriously though, it's going to take some time. With the PTP, and SFR turbos and maybe even Hymee's Twin Screw, you can probably make a pretty sick car. I'm not sure if Richard's system is going to have a tune for it to run more boost, but I guess we will see. If those don't really do it for you, it might be time for a new/different car. Hope I could help.

 

Zero to 60 in about 6 seconds and the quarter in a hair over 14 is slow? Road course times equaling that of a BMW M3 is slow?

Well, ok, so most of us would always choose a Porsche over a Mazda, but this car is hardly slow.

Also, the damn engine is so smooth you just don't feel how fast you're actually going.

Chris...

 

The main problems are the oil coolers, the MOP and fuel delivery from what I see. I'm no expert, but without fans cooling the oil, it gets real hot at slow speeds and stoplights in hot climates. If you go FI, you should get the RB MOP mod ASAP. Then there is the no return fuel scenario.

My little birdie told me, the stock apex seals are good for 13 PSI of factory boost. This is a conservative safe corporate boost level also. The 13B REW had a 12 PSI stock rating for comparison I think. So, with internal mods, the boost could go higher. But I really don't know if there are different apex seals out yet.

These are unconfirmed numbers, but I trust my source.

 

Must...resist...turning up boost.

 

:D

Be careful

 

Its like anything. Where do you stop?
One thing is for sure. It is not a slow car. It DOES have a torque challaged engine so it does feel differant. And Man Oh what a feeling. I know this engine moves a lot of air so people like to compare it with a 2.0 or something but where is there another stock 1.3L na car that will stay with it? The guys in my little group that do the track days at Road Atlanta , Roebling and such will confirm how we are passing the Mustangs, Older Corvette's, Bmw's, 350's etc and yes it does have a lot to do with the driver BUT a driver still has to have a decent car. No it is not a red light car but hey I have grown up.
olddraggeri

 

Just to clarify man, I dont mean to flame you at all. I understand where you are coming from. You do have some validity to what you say. In certain ways this car does FEEL slow. But look a little deeper before you really believe that.
Olddragger

 

factory apex seals (and the rest of a bone-stock motor) are good for an easy 20+ psi... it's all in the tuning.

 

well this is will be a daily driver so i dont wanna boost it really high... like im not no speed freak or anything its just the feeling you know your car can take another car... not that i street race or anyhitng... we need to represent our 8's.. and i kinda do think 14 in the 1/4 is slow lol well not slow.. "quick" i think 13's are fast lol and it seems hell to get it running 13s with these greddys so it worries me how much more the other turbos will help... eventho i rather SC...

 

What makes you say the Renesis is fragile? There are lots of reports of people detonating while turning-up the boost. None of them have reported any engine damage. In fact, there's only one instance of a boosted 8 blowing a seal that I know of, and I don't think it was necessarily caused by the turbo or detonation. Since he was only a few pounds boost when it happened, and not really pushing it, I think that seal might have gone anyway.

-MD

 

idk im a noob it just comes off that way from the stuff i read...

 

Yes, this is most likely true. The 13 PSI was from Mazda Master Tech Training School in Kansas City. It was in their course workbook. Remember, it was a factory safe number.

:D

qj - any aftermarket guts for the Renesis yet?

 

Only thing I've heard about were the lightened rotors from racing beat.

 

you got enough money and i'll build something. LOL

 

Okay everybody, let's hope for a rich 8 owner to do a long term test of these boost levels for us!

I would definitely like to see what kind of power the 8 would make with a sustained 13psi of boost!

 

well unlike other people. i really have to agree with this post. THE RX8 IS SLOW in straight compare to other sports cars. Before i bought my 8, i test drove quite a some fast cars like the 04 STi, EVO 8, Skyline GTR R32, 95 RX7, and even a MR2 seconde gen. I hate to say that even MR2 is faster then RX8. i am really looking forward for a good TURBO kit now.
since other cars i mentioned above are all non N/A, with a decent turbo, WE WILL KICK ***.

 

13psi seems like a really conservative number, but are we talking 13psi on rx8 rotors or 13psi on FD or FC (TII) rotors? I've seen people handle 25+ psi with OEM 2 piece seals and OEM springs with the 9.0:1 compression rotors, but 10:1 compression is a different story. Remember of course that these motors hitting 25+ were obviously with full standalone control and enough fuel to back it up.

Lets think about 13psi on 10:1 compression for a minute and think about absolute compression. I just read up on this recently so lets hope I understood it fully, otherwise call me a n00b I could care less.

Atmospheric + boost =
14.7 + 13 = 27.7
27.7 x 10 (comp ratio) = 277
277 / 9 (comp ratio) = 30.777777777777777777777777777778
30.7... - 14.7 (atmos) = 16.077777777777777777777777777778

So 13psi on 10:1 compression is essentially like ~16.1psi on 9:1 compression, if I understood the article correctly. I see no reason why the rx8 cannot handle 13psi with proper management, the apex seals should handle that extremely easily. I have a friend that ran 17psi on a 9.4:1 motor that had VERY high miles and was quite old, which (same method as above) would be about 15.1psi on 10:1.

Like guitarjunkie said, it's all in the tuning. Has anyone with the greddy kit on their rx8 even gone full standalone? Or are they still wasting their time with inferior bandaids?

 

Yes, on Renesis rotors. I'm going to see if I can copy the page that had the numbers on it.

 

This car is not slow at all. My previous car was a 996 (1999 Porsche 911 destroyed in a crash) and I'm running similar times at WillowSprings and Thunder Hill (subsecond differnce).

I can't tell about 0-60 or 1/4 mile as I bought this (as well as my previous car) for being a sports car and not a muscle car. But, to each its own.

 

but most porsches arent that fast sti can take alot of them i believe..

 

Exactly! The 8 is not built to be a street scorcher. It's quick in acceleration but it's built for superb handling not the 1/4 mile.

If you want a Red Light Racer get a 'Stang or STi . This car is meant for the corners!

Chris ...

 

The 1999 Porsche 911 was a mid 13 second car... you call that not fast? A brand new WRX STi is about 0.2 seconds faster in the 1/4 mile than the '99 911.

 

My 2001 was a 13.4 car. Could run with the STI very well (because of their AWD they took me off the line, but by the end of the 1/4 I was on top of them & pulling away). In 02' they gained 20 hp. New ones have 5hp (Regular) or 35 more hp than that. A new 997 Carrera S stock for stock would destroy an STI.