london

Has anyone know if this can be done ,i want to put a 3rd gen manual transmission in a 2nd gen car but i want to change the bell housing on the 3rd gen and use the 2nd gen bell housing or if that cant work what about putting the guts from a 3rd gen manual gearbox into a 2nd gen gearbox,Any ideas out there.

HWO

these use the same internals just have a different 5th gear ratio, so what would that achieve ?

london

always thought the 3rd gen box was a lot stronger than the 2nd gen box.Thats why i wanted to do that mod.

Evil Aviator

I don't know about the later series models, but the Series VI 3Gen has pretty much the same transmission as the Series V 2Gen, including the same gear ratios. I think that the only difference is that the 3Gen transmission will be a pain to mount in your car.

I know of a couple of people running the stock TII transmission with 400HP turbo motors, so I know that it will take a fair amount of torque. If your engine produces more power than that, here are some web links for transmissions that I have recently been considering for my car:

http://www.hewland-engineering.co.uk
http://www.jericoperformance.com
http://www.lencoracing.com
http://www.richmondgear.com
http://www.fortesparts.com/tremec/
http://www.darkhorseperformance.com

london

have been looking for G Force site,does anyone have it at present.

InitialD FC

iTrader: (1)

Hey Evil Aviator, Im also looking for a nice transmission for my car, it would need, well not really need but would like, to bolt in place of my turbo II trans, i know some custom mounts and bellhousings are necessary, but you know what i mean. I need one that supports something like 600 ft lbs of torque and 800hp at least, i would like to get more but thats like a minimal to make sure the tranny will take plenty of racing abuse. I was hoping to get a seqential clutchless style, any info you have, please let me know.

HWO

isn't 5th gear a different ratio

i think its 0.78:1 in one box and 0.72:1 in the other, i think the S6 has the 0.78:1 ratio

Evil Aviator

I looked it up in my Mazda Competition Parts catalog, and it lists the following for turbocharged cars:
87-88: 3.483 / 2.015 / 1.391 / 1.0 / .762
89-91: 3.483 / 2.015 / 1.391 / 1.0 / .719
93-95: 3.483 / 2.015 / 1.391 / 1.0 / .719

I haven't acutally taken apart the corresponding trannys and counted the teeth, so I guess it could be a typo, or maybe the American-spec cars had different ratios than Aussie-spec or J-spec?

Hmm, here is some more info for this thread... as I look in the catalog, I see that Mazda Comp divides the transmissions into 4 groups:
1) 74-78 Rib Case
2) 79-91 Smooth Case (NA)
3) 87-95 Rib Case (Turbo)
4) PBS MDR-1 Quick-Change Racing Tranny

BTW, the info is from the 97 catalog, as my friend has the current catalog.

Evil Aviator

Sure, I'll let you know. It looks like you need the same level of transmission that I do. So far I have found that the PBS MDR-1 won't take the torque, so that narrows down the list some.

PS: It's good to see that someone else out there is stupid enough to waste $4,000 - $12,000 USD on a tranny for their REX.

Coolidge

I am pretty sure the TII transmisison is just as strong as a 3rd gne transmisison. There would be no benefit changing, unless you blew your TII one and the 3rd gen one is a super cheap dirt deal.

Most guys running 20B's in 2nd and 1st gens use the TII transmission. Those things put out a lot of torque, and torque is what shreds your transmissions.

InitialD FC

iTrader: (1)

Haha, you said it. I am tired of the turbo II trannys breakin, and that was my old setup. Need something thatll last me this time. And it wouldnt hurt to run around the tracks and drags with a clutchless .