E28 Diff install DIY

[Bluebimma]

Disclaimer:
Follow my instructions at your own risk. I am not liable for any damages caused by following my instructions. Proceed at your own risk.

Please read before tearing your car apart and make sure you have everything needed for the swap. The E28 differential swap is the same as installing an E30/24 differential into the E36 compact chassis.


Supplies needed.
E28 Differential
E30 ABS axles and studs or (optional unless lowered)
E36/5 Output Flanges
E36/5 Output shafts
For any medium case diff install on the E36/5, you will need a ///M Coupe, ///M Roadster, any Z-series 6cyl plate or E30 (6cyl.) medium case differential plate. Z3 1.9 and small case differential plates from the E30 318 and m3 do not work with this upgrade. (This is essential to mount the diff to the car since the E28 doesnt have the same mount point)
New locking circlip for the output flanges
2qts of Part# 83 22 1 470 080 from the dealer or an equivalent blend of gear oil with Posi additive
Standard Mectric tool set with 10-19mm, rachets, a breaker bar, open end wrenches, a pipe to use as a breaker bar if you dont own one which can be used with your rachet and wrench, shop towels, gloves, jack stands

Gear ratio file:
http://www.fileden.com/files/2007/1/...ial%20Tony.xls