Medium differential case variants?

E28 technical advice asked and given! Troubleshooting, modifications and more.
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pavulon
Posts: 48
Joined: Mar 10, 2018 8:39 PM
Location: WI

Medium differential case variants?

Post by pavulon »

Are there differences between early and late 188mm diff cases for E28's? Specifically, are some rear case covers with centered E28 (?others?) mounts not compatible with later case housings? Apologies if this has already been extensively addressed.
Blue Shadow
Posts: 10195
Joined: Feb 12, 2006 12:00 PM
Location: SE PA

Re: Medium differential case variants?

Post by Blue Shadow »

There is a change date of 9/84 from the round to the rectangular diff mount attached to the body. Expect the diff to have different rear cover for this change.
Mike W.
Posts: 26872
Joined: Feb 12, 2006 12:00 PM
Location: California Whine Country

Re: Medium differential case variants?

Post by Mike W. »

82 model year diff's are different, they have a unique rear cover. Other year covers and cases are interchangeable, but 82 is a unicorn. The assembly will bolt up to pre 85 cars, but not 85 and up as there is no cover to fit the late bodys and the 82 diff.

Diff FAQ viewtopic.php?f=9&t=44635
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