Hello，everyone！
I got a 4.3 final gear from Infini IV with 2-way Lsd of mazdaspeed， i wanna put it to my non-turbo s4，is it possible？and is it worth to do that?。。and i checked some websites before， the version of my s4 is already with 4.3 final gear not the normal one with 4.1...please please please help me...thx in advance....

 

no.......you need a turbo 2 diff housing 2 do it.

 

they are already with diff housing...and do i need the diff axes? and anything else?

 

if the housing is a turbo II, then you will also need the turbo driveshaft, axles and axle stubs.

If you already have a 4.3 end on the car, why would you want a turbo diff? Because of the 2way lsd?

 

No s4 came with a 4.3. Only the gtus did and that was s5 only.

You'll need a custom driveshaft to connect your na transmission and the turbo diff. Mazdatrix sells them.

You'll also need turbo axles.

Turbo 4.3s are pretty rare and expensive, ~$650 New...

 

thank you all~~~~~~~~

yes..i wanna do this because of the 2 way lsd...so is it worth doing that?
or any advantages if i do this? is the turbo parts better than NA parts?

 

actually, my s4 came with 4.3 because of its version...it is different from other version NA s4......for example, the ignition system of my car is mechanical, not electrical.....and there is a small pipe near one of my exhaust muffler while other version of NA S4 don't have that......

i am wondering whether i should change the turbo diff...

 

well, a brand new 2 way lsd for the n/a is about $900.

To do a turbo rear end swap, you will need a turbo driveshaft and turbo axels, if the diff doesnt have axel stubs, you will need that also. All together, thats about $550

The turbo rear end can handle more power, but if you are going to stay NA, theres nothing wrong with the NA rear end. Aaroncake runs a NA rear end on his FC and he is pushing out 400+hp. Though, if you are going to track the car a lot and drifting, a turbo rear end and tranny will take the abuse much better.