Ok I have 2 86 base models with one wheel wonders, and I am going to be going with the Turbo conversion, and I have done searches both here and the evil forum and noone has posted a definitive answer to the difference in the differentials between a Turbo II and a N/A



What I am trying to ask, I have a supposed upgraded T2 Diff from Cusco (locker style) and I am looking to mount it in the 86 carrier. I just want to swap the ring gears if possible, but the FSM does not list any differences for the differential between the two. So all you parts movers, I am looking for a definitive answer if I can do this swapout or not. Trying to save a little money since I already have 2 86 carriers.





I thought about the Miata conversion too, but I will be making some serious power (450-500hp range) and I don't think the Miata is up to the task.

 

the difference between a NA and a TII differential (regardless if the NA has a limited slip diff or not) is the diameter of the diff itself.



I think TII diffs are 7 inch diameter differential, where as the NA is smaller, 6 inch maybe? i do not know the exact size I forgot, and raelly haven't paid much attension to my differential.



All i know is that i want a more linear lockup differential then my viscous in my 89 TII, i want a FD torsen

 

the turbo rx7's and v6 2wd, or 4wd mazda's all have an 8" ring gear while the na rx7's and rwd 4 cyl cars all have the 7" ring and pinion.

 

Thanks J9, Banzai concoured, looks like I am going to have to find a T2 carrier now

 

Wanna trade?

 

Justin you want an s4 clutch type lsd





Is there anything you don't know mike?!

 

My bad

 

No you don't! FD I've HEARD that FD TORSEN's break rather easily under hard launchs.