I just got my retro fit diff back and put it all back together and it will spin freely in nutrul and in gear it is locked up but i put my clutch on it and spun it but the diff did not spin. Anyone have anyidea.

I'm having trouble understanding exactly what the problem is you're describing.

It spins free in nuetral. You put the clutch on it and spun it, and the diff didn't spin. Sounds like its in neutral. What's the problem?

I put it in gear when i put the clutch on it. IT spun super hard and the differental did not move but felt like every thing eles did.

is the tranny in your car?

If you have the trans sitting upright, it will be very hard to turn, as all the synchros are working like brakes on the gears. If you lay it down on its side it should ease up.

Depending on which gear you out it in and how much you turned the clutch, the rotation might not have been noticable. Lay it on its side, throw it in first, and give it a shot that way.

ok thanks i will try that is was sitting how it should be but i will put u back together and try it. I could turn the output shaft but the diff didn't spin. so i will try it tomarrow after work.

I put my retrofit back in about a week ago and already have the tranny mounted up the engine. Everything seems to spinning just fine. As long as you put everything back in correctly (which is little hard to mess up) what your describing seems fine to me. You put the ring gear in correctly right? It has a slight taper to it.

i just droped the diff back in the way they sent it back. I didn't that the gear off just droped the diff and put it all right to gether.

she seems to be fine now thanks for the help guys