TurboMazdaSpeed

Ok this is a pretty straitforward question, im in the market for another T2 and i came across one.

With The one i found, The guy swapped a S4 turbo motor / Transmission into a S5 N/A chassis...but , he didnt swap the rear ends...Inot sure what he did for a driveshaft) . so its still using the S5 N/A Rear end and axels.


How much stress can the N/A rear end handle ? And axels? Im guessing the turbo axels are beefier?

He said he would throw in the rear end / subframe from the S4 turbo parts car... im guessing though i cant interchange the T2 axels in the S5 pumpkin or swap diffs?

Would my best bet would be to drop the subframe and swap out the diff/axels for the S4 setup?

I hate swapping rear ends in fcs

The car has a microtech / fuel system , etc running stock turbo with a street port... i would be putting a big hybrid on it as soon as i get it, and get it tuned but im afraid the rear end or a axel might pop once its got 300+rwhp

Thoughts?

thanks guys

jerd_hambone

There have been some people that have busted NA rearends with a built turbo engine. And some people have abused them at the strip with built V8's and not busted them.

Mazdatrix has a driveshaft built to mate the turbo trans and NA rearend.

I would keep the NA rearend until something breaks. But you need the full thing, axles, brakes and all, to swap to the turbo rear.

TurboMazdaSpeed

so its a gamble then.. what would you do?

car specs are S5 chassis, midnight blue stock paint, 15,000kms on motor, SP, microtech LT8, fmic, fuel system..basically everything you need to support a bigger turbo, $4g is his asking price

its kinda hard to come across T2 parts here in vancouver, im guessing the N/A brakes are worse then the T2 ones too? (i cant remember its been too long since ive owned FCs) thanks for the quick reply though.

2slow4stock

iTrader: (18)

If you love open diff, go for it...

jerd_hambone

I'm V8 swapping and plan on running my NA diff til it breaks.

I'd say buy it and if he's willing to throw in the turbo rear, run the NA til it breaks, and be collecting the brakes and such in the meantime.

Black Knight RX7 FC3S

iTrader: (7)

Im pretty sure all S5 are 5 lug so with that said all you need to swap the turbo diff in is the diff, the axel stubs, halfshafts, and a turbo driveshaft since it already has a turbo trans.
All turbo halfshafts axels are the same, its the Stubs that you have to worry about fitment.

Evil Aviator

The propeller shaft is either a custom unit, the Mazdatrix conversion shaft, or a shaft from an NA automatic transmission RX-7. Ask what he used, as the automatic transmission shaft modification is extremely dangerous and should not be driven more than about 50km/hr.

The stress depends on how you drive the car. If you just cruise around the street, then it will be fine.

That is perfect... the easiest way to change out everything is to simply detach the shock absorbers, drop the subframe, and swap it out with another subframe. Swaping out the individual parts is more difficult. The NA differential, halfshafts, and propeller shafts have slightly different flanges that will not bolt to the TII parts.

Absolutely. However, you may want to rebuild the S4 LSD before installing it. You can check it first, but the clutches are usually worn out by now and few people rebuild them due to the cost.

No, all of the 5-lug brakes have the same dimensions.

jerd_hambone

Ah crap, I forgot about S5's being 5 lug! Sorry about that,

arghx

iTrader: (3)

you will get tired of an open diff real fast.

Black Knight RX7 FC3S

iTrader: (7)

a n/a diff should handle some power.
I had the stock n/a diff in my GTUs which is the 4.3 diff and it handled the stock turbo setup well....until the front diff mount broke and I wheel hopped to death at the drag strip. The axel stubs snapped in half inside the diff lol. The diff is fine, but I needed new stubs. I switched to a S4 turbo rear diff though.
before the snapping, I did many hard launches.

TurboMazdaSpeed

Thanks so much for the great answers guys, ill see what he has for the rear end parts, im going to check it out next week when im back from a work trip! Ill defenatly ask about the drive shaft too!

Cheers