will 20b tt work with stock 6 speed trans?
 

im lookin to buy a 20b tt and i know a little about it, but nobody seems to be able to tell me if itll work with the stock 6 speed transmission, if anyone out there has any info please share.

thanks.

I doubt anyone has tried it . The stock trans is not a strong one .
That said I'm making some reasonable power and have no complaints - so far .

are you planning on a puttin a 20b in your 8?

yeah for sure

When you say you know little about the 20bTT how little? How much work were you planing on doing yourself?

the whole installation thing scares me, this would be my first big project. i work with this guy, hes been a tech for 27 years so i told him about my idea and hes willing to help me out with whatever i need help with.

I know the thread I am about to post is 47 pages but based on the amount of money a 20B will cost you need to know what your getting into.

https://www.rx8club.com/rx-8-multimedia-photo-gallery-6/surgery-has-begun-120256/

mike, do you REALLY know what youre getting into??? you do understand that this IS NOT a direct swap, time, money and LOTS of fabrication will be needed to pull this off....if it was a direct swap a lot of us would have done this already

Mike- your looking at about $5000-8000 for the engine alone- used or rebuilt. And your looking at another $15000 for time/labor/fabrication/tranny/etc.

And by the way, most people who run 20bs, run RX7 FD 5 speed trannies, so....Your choice should be the same as theirs....not a 6spd. Search for AngelJoeV he has a 2004 Winning Blue 8 with a 20b swap+ bigger aftermarket turbo. He also has Youtube videos, so search for them. Good luck!

tito has his 3rotor turbo running at about 500 whp.. been running strong for a while

422hp dyno >>http://www.youtube.com/watch?v=dKr9XhVNwiU

his new t76 turbo. >> he tells me hes over 500 hp with the new turbo >>http://www.youtube.com/watch?v=laAWaa8X1jo

i no nothing about the transmission myself, i just go by what my mechanic tells me.. he's going to try about 700hp in the near future to see if the tranny holds up. He tells me the rx8 tranny is bullet proof. I've heard people say other wise. He even told me that another guy in San Antoniio has a 3-rotor with the 4speed auto shiftronic tranny running about 450 WHP.. all i can say is dayum!! Im suppose to get my new slotted and drilled brake rotors put on by him.. when i get a chance to goto San Anotonio I'll ask more questions. Ill even try to take a ride in his car. Last time he had it taken apart to work on something.

/\ chickenwafer blew his trans after only a few days running at 325lbft torque ......

The answer to the original quiestion is YES. The tranny will fit the 20B. It wont HOLD its torque but it will fit. Trust me, I know.... :)

any idea how much torque is too much ?

thanks for the input everyone, and holy shit!!! thats a lot of stuff to do. ill have to show all this to my tech buddy and see what he says about all this. thanks again guys.

ouch. well tito has had more torque than him for 2 years and his tranny is still good...i guess in generally it cant handle that torque. just a few lucky bastards hanging around. well damn thats sucks. so whats the next step.. what can be done to make the tranny stronger?? This is making me very interested in a 3 rotor.

http://www.youtube.com/watch?v=CTLsf...e=channel_page

this guy is ruuning on the 4speed auto transmission!!! holy sh*t!!! wonder how long he'll last......


**waits on PHILS8 to comment on this subject matter..**

I would say my car has around 550 to 600 lbft torque. That time we went to the dyno and couldn't get the car over 5000 rpm ( timing problems, solved but couldnt get back on dyno) We did 349 at 10 pounds of boost at around 4800 rpm. and Im going to shoot for at least 20 pounds of boost. So think about it, at 4800 the 3 rotor is bearly starting to make power. My car revs up to 10k like nothing now. Not that it will make power all the way on the rev band but it should make a difference.
http://www.youtube.com/watch?v=UU8I-5-YlAg
http://www.youtube.com/watch?v=Nyddb...eature=related

Did u get the 5spd fd tranny or did u use the stock 6speed? and 550+ torq??!?!?!??!!? WOW..

I went through a couple of rx8 stock trannies. As long as you stay with street tires, be very carefull with 2nd gear and stay below 8 pounds of boost ( BOOOORRRRIIIINNNGGGGGG), it should be fine. all I broke was 2nd gears. STAY AWAY of drag radials.. I used them and the tranny went in about an hour..... counting the time it took to get the tires on... hahaha
PLEASE take into consideration that I love acceleration and I drive my car HARD... If you baby your car then it will last forever, But who wants to go through all this for that...

angeljoelv...what transmission are you running now? and check this out for me and lemme know what you think, they come with less than 20k on em...

japanesestarmotor.com/jdm_engines/116/Mazda_mazda_20b/

6 speed T56 from a mustang Cobra. Going auto soon.

Check locally.. I can get them here for around 3500.. If you can't find one locally then you can go that route.

This guy is in San Antonio? An auto 20B rx8 in San Antonio? The video shows him passing a BP gas station :squint:

I know Tito a little from through the years and last he told me he wasn't really in the business of major jobs anymore.

i dont kno who this guy is in this particular video. just found it on youtube. But tito was tellin me about an auto in San Antonio with a 3-rotor. btw i just talked to him and he advised me to go 13b-rew instead of 3-rotor. He keeps tellin me theres so much work like alot of custom-fab.

But yeah if you pay him, he will do "major jobs"

Oh, hmmm, so he is back in business I guess then. 13B REW would be my choice. It's been done here but will still cost a grip to get done right. I would be really surprised if there was a 20B Auto that none of us in the local rotary/import community have never heard of but I guess it's possible if the owner is a recluse.

yeah.... then he said something about a ferrari 360 or 430 tranny in another 3-rotor car?? wasnt 100%sure what he was saying

I believe that would be this... http://www.youtube.com/watch?v=x72CH3VPqW8

Hate to go around in circles but if you were going to put a 13b rew in it why not just stick with the renesis ? Good power is starting to be made - pretty soon there wont be much in it .

Lol i wanted a t56 tranny upgrade for the 8. How hard was it to make it fit? Any major modifications? Cobras are bad ass :P

Turbo II bell housing, custom made conector plate, extend the shifter and Buallaaaaaaaahhhhh

well, right now i feel like its still deep in the experimental stages as far as what can be done with the Renesis... i know youve been runnin 305+ hp for a while now and some more guys have been doing alot. my goal is 350-415 whp. It can be done on the Renesis, im not doubting that at all, but with the 13b-rew i feel more confident because I have a few more options (turbos,ecu's,..etc) Like a few hours ago I learned that more than 320 lbs/ft of torque was the pretty much the breaking point on the transmission.

well if i did the swap I'd bring alot over from the 93-95 rx7. like the tranny and all that. only because I've seen tuners do it for so long on the 13b-rew. There are more people I can ask about the 13b-rew than I can ask about the Renesis. Its been out for around 15 years so thats understandable.

btw...if the 13b rew doesnt come through, my alternative option would be to get a Renesis rebuild with the Esmeril Racing apex seals. I do have confidence in those seals even though I have no proof of their effectiveness.

If you really want to stick with a stock tranny or an fd then go 13B. you will be able to make very good power and your torque wont be as much as if you did a 3 rotor. mucho torque= no good for stock tranny :)

If a reliable 350-400 was my goal I know exactly what I would do and it would not involve a motor swap .