[LZySJ80]

Hey All!
I own a 98 coily and my rear diff is shot and need a new one. We all know how easy it is to find parts for them to (not)
Which comes to my question. I have read forums that jimny front diffs can bolt straight into the rear of a Sierra is this true? And if so what year model would it have to be? Thank you

[Gwagensteve]

No, a jimny front diff is unique to the front of a Jimny and doesn't fit any other model.

The rear diff centre is the same as any other 1.3 Sierra. The diff ratio of the SJ80 is the same as a narrow track 1.3 sierra (3.9)

The whole dropout third member can be swapped for a narrow track rear- it's interchangeable, but the SJ80 has that counterweight anti-vibration thing on the top - there's no provision for that on a leaf sprung third member. The NT diffs have a different pinion flange bolt pattern, I'd recommend swapping to a NT yoke on the back of the driveshaft - swapping the pinion flange requires the diff to be setup again as it uses a crush sleeve which is a disposable item. It's a job best left to professionals.

[LZySJ80]

Ok thank you heaps that has opened up more for me. I have a full diff bearing rebuild kit (crush sleeve) so when I come across one I’ll have a look.

Once again thank you