...into an FC yet? How difficult was it?

 

i heard a few people have put in miata 6speeds i cant remeber if it is the same as the rx8 box or not. would be nice to have a newer tranny in these cars but i duno how much an extra gear would help acceleration and whatnot.

 

if u provide me with the rx8 tranny free of charge i'll gladly swap it to see if its possible....

 

It's probly wouldnt be as good due to the shorter final drive. I say the original turbo tranny is better.

 

From what I've heard, the bell housing has a completely different bolt pattern, so it'd be a no-go without some custom work.

 

Weird I was talking with the guys at Yaw Power at Seven Stock 6. They said the pattern was the same and it should bolt up. Which makes perfect since to me, why would Mazda spend extra money re-engineering/tooling something like that when it's already there.

- Dana

 

cause to save costs ... theyre using a popular "universal" renault tranny found in many new cars .... new miatas, new rx8s, new 350z and more

 

cause to save costs ... theyre using a popular "universal" renault tranny found in many new cars .... new miatas, new rx8s, new 350z and more

 

i thoiught it was the same bolt pattern,.. The tranny is of the shelf, but its not in the 350z, its in the miata, the rx8 and the lexus is200 (not 300) The trans is actually pretty weak, rx8 ppl are blowing trans allready. Just because the internals are off the shelf doesnt mean they cant slap a bellhousing on it. you dont really expect an is200, miata and rx8 to all share the smae bolt pattern do you?

 

The Renesis has the same bolt pattern for the transmission bell housing:

http://www.yawpower.com/renespic.html

Also:
http://www.google.com/search?q=renesis+bolt+pattern

 

ditto...

 

Word, thanks for the link

- Dana "I'm right, every once in a while "

 

Forget the transmission, thats a pretty awesome looking intake manifold, I wonder if THAT could swap around

 

Yeah, how many of you can afford a transmission that costs MORE than your car?


-Ted

 

*Raises hand*

 

I'd hold off on that thought...a local guy with an 8 is having some "issues" with his transmission with a whopping 10K miles or so...ice in a blender.

 

I was thinking about this a couple of weeks ago. Seeing the add's on thepartstrader only fueled this

However, if your browse the rx8 forums, you will find far to many thread's regarding problems with the 6speed's such as having going into gears 1st or 3rd gear easily, or at all

reading a few of thoes made me change my mind

-Jacob

 

also ive read of atleast 3 of them blowing up allready, needing complete replacment. The rx8 is a couple hundred pound heavier though but i think a T2 would kill it quickly still.

 

Don't forget to mention there are people that are breaking the Limited Slip Differentials.

Still, the RX-8 is bad ***.

 

Stock RX7 TII 183HP
Stock RX8 N/A 238HP. I believe.

Am I using the new math? I don't know.

All I know is I want the Mazdaspeed turbo 8.

 

S4 TIIs are 183hp roughly..
S5 TIIs are 200hp roughly

 

Torque breaks gearboxes, not power.

Stock S4 RX-7 Turbo: 183 ft-lb
Stock S5 RX-7 Turbo: 196 ft-lb
Stock RX-8: 159 ft-lb

Longterm I wouldn't trust an RX-8 gearbox behind a modded Turbo, especially if they're breaking already.

 

RX-8 gearboxes are breaking with only 159 peak torque? Why must Mazda screw over (and damn the future of) the Wankel Rotary so?

 

LOL a pretty good guideline is :

Horsepower gives you the speed to hit the wall--Torque gives you the strength to move it

 

hmm, well then...sounds like my wussy N/A engine would be an ideal candidate for an RX-8 tranny.

So why don't you guys send one my way, and I'll do all the testing for you!

Actually, within a year, I'm sure you'll be able to find RX-8 trannies in good shape in a junkyard somewhere.