Post by
Hijacker »
https://forums.nicoclub.com/hijacker-u9394.html
Thu Feb 03, 2005 6:22 am
swapping ring gears is a PITA and expensive on our cars. I landed a relatively new VLSD out of a low mileage silvia last summer, but it came out of the carrier and minus stubs and ring gear. I had the joy of rebuilding the rear end. It's fairly involving, and the shims you need are $16 a piece at the dealer.
A picture says a thousand words:
If you look, you can see that the diff sits sideways. The pinion gear drives the ring gear, making the diff rotate on an axis. That axis happens to be the stub shafts that go into the sides of the diff carrier. When the coupler engages, it locks both wheels together to the best of its ability and causes them to turn at the same rotation.