Brettus

iTrader: (2)

getting the 4.1 from a auto wreck seems like a cost effective solution ...

Bastage

iTrader: (1)

I'll get an 09 trans if/when I break this one

chiketkd

iTrader: (5)

Does anyone know how much greater torque capacity the '09 trans has over the '04-'08 trans? If I decide to build a street Mod RX-8, I was thinking of going with that trans along with a 4.11 rear end.

marsredr100

iTrader: (1)

Thanks for the info.

marsredr100

iTrader: (1)

Agree

marsredr100

iTrader: (1)

Same here

california style

I heard 09 R3 models they started using the MX5 transmission? Or am I totally wrong?

morkusyambo

How do you guys know the 09 tranny will mount properly, or work with our ECU?

BLYNCH

Does the SC void the warranty on the cat? How long are your cats lasting w/SC? Ive spent hours reading on gutting the cat, race pipes, hi flo cats and simply replacing the cat. Holy crap, Batman! Each choice has a ton of pros/cons! My brain hurts!. My local Mazda dealer has gone under, so i"ll have to drive to B'ham,AL. for warranty work, but I,m afraid of what they'll say when they see the SC.

chancejat

iTrader: (2)

just throw a fd tranny in.....na rx8's run like 14.0-14.1 with them installed
proof: https://www.rx8club.com/rx-8-racing-25/14-03-%40-99-52-a-161255/

Bastage

iTrader: (1)

Take it off and check it out for yourself. If it's bad, give them a call and explain the situation to see if they'll repair it under warranty.

Bastage

iTrader: (1)

I don't think the ECU cares about it, but I'm not sure about the mounting. We're just assuming it's doable until someone actually does it.

swoope

iTrader: (5)

https://www.rx8club.com/mazmart-88/transmission-153887/

this enough confirmation that it will fit!

though some rumors of bad 4 / 5 th have been around..

beers

Bastage

iTrader: (1)

Sweet. Thanks for the link, Swoope!

olddragger

iTrader: (3)

it will fit but one of the good things about the 09 is that the ppf is on the right side.
for dragging I would not really bother with an 09--go with the 5 speed. Road racing go with the 09---know why?
OD

Bastage

iTrader: (1)

Yes, I see the advantages that each have, but since I'm not building a drag car here (just a car that I occasionally drag race), and this is my daily driver, I'd prefer the 6 speed

Rotr8

iTrader: (2)

My friend and I are building a sequential gear box for his Exige and after that the 8,,, ohh and AP Tuning just happens to be up the road, yup the only place in the country where you can get hardened gears, our design is very simular to Ikeya's ....
His exige will be ready around June-July then he's going to a paddle driven do-cut, and then mine after that ,,,
Once we're finished we might even mass produce.....

Moon Assad

From working with the spindles on the Gt car I learned a little bit about hardining. In that aplication we rested the part in sand and hit it with oxy till it was bright red then barried it in sand to let it cool. Would the same method work in the case of hardining the tranny gears?????

chiketkd

iTrader: (5)

That's very true. In my specific case, if I build a Street Mod car the SCCA rules state I need to use the same number of gears as the original trans. So it must be a 6spd.
Agreed. The bellhousing will be the same and as it's manual trans there'll be no TCU to deal with.
Sweet...swoope's the man. Thanks!

Rotr8

iTrader: (2)

I dont know, we're having APTuning harden them ,,, we're still designing the Exiges, we have the cam ratios all worked out(Exige gearbox is cable driven)

olddragger

iTrader: (3)

is the gears the problem or is it the forks, syncros and bearings?
OD

a_ahlan

I think RX-7 gearbox will improve quarter mile times and give us a little more low end torqe. but not sure if its a drop in replacement.

Rotr8

iTrader: (2)

some of the people who do the 20B swaps use the 7s tranny...

olddragger

iTrader: (3)

7'tranny is a much better set up--will need new starter etc for the swap though.
OD

swoope

iTrader: (5)

on out tranny you bend the forks, then that kills the syncros..

lately is seems like 3 to 4th is the issue..

beers