- Joined
- May 27, 2003
- Location
- Acworth, Ga. USA
So, I got a G80 with 4.10 ring and pinion from a 16V car at pull-a-part. Originally wanted to swap ring and pinion into a 1031 housing which had 3.73 open diff. The pinion seal was leaking, so had to remove the pinion nut and flange. Then I thought the 3.73 pinion depth was already set, so to save time, I would just replace the seal and re-install the pinion. I had no new crush sleeve, so I measured the original one, then slipped it over a spare pinion and beat the crap out of it while rotating it continuously. I was able to stretch it out .020", so I reinstalled it and used a tool Jr. made to hold the flange, and with a lot of grunt got it to tighten up. Turning torque checked as tightening continued until in spec. Jr. had already modded the G80 by cutting off the weight.
Then, took the diff with ring gear from 3.73 and oiled up the bearings and dropped it in. Had to persuade it with a few whacks with a wooden hammer handle, but it seated nicely. Installed the caps and snugged them down, then whacked the diff with a rubber hammer about 10 times each way to seat the bearings, torqued the bolts to spec. Turns nicely with a slight drag.
Didn't measure backlash, or gear pattern and don't care. I will put the axles in and put it in the car.
I have a 240 abs axle for the right side and two sets of axles as spares if one breaks. If the diff breaks I will just get a regular diff and weld it up.
Maybe I will have a roller by the weekend.
Then, took the diff with ring gear from 3.73 and oiled up the bearings and dropped it in. Had to persuade it with a few whacks with a wooden hammer handle, but it seated nicely. Installed the caps and snugged them down, then whacked the diff with a rubber hammer about 10 times each way to seat the bearings, torqued the bolts to spec. Turns nicely with a slight drag.
Didn't measure backlash, or gear pattern and don't care. I will put the axles in and put it in the car.
I have a 240 abs axle for the right side and two sets of axles as spares if one breaks. If the diff breaks I will just get a regular diff and weld it up.
Maybe I will have a roller by the weekend.