FD Diff in a FC TII Rear End Questions

[hIGGI]

Originally Posted by TehMonkay

the halfshafts are the same.

Use all FC ring and pinion stuff, since it's the FC casing.

Beware!

Halfshafts are not same. I have came across to two different lenghts of TII halfshafts. As you can see in mazdatrix pictures, first two stub shafts are from S4 TII and they differ in lenght. Lenght does not change inside of differential, but outside. And thats where you need to be carefull about choosing right halfshaft. Longer halfshaft has to match 5 7/8" stub shaft, shorter halfshaft has to match 6 1/4" stub shaft.

Using wrongly matched stub + halfshafts will cause you problems. We once used short + short and stub shafts were pulled out of diff during driving......long + long will cause unwanted pressure on the diff from side and/or could damage/break halfshaft assembly....