E30 Differential FAQ

[rwh11385]

http://www.e30eta.com/ecdiff.htm

[Kilomph]

Nice find! I can't wait to swap in a 3.91, that's gotta be the perfect DD gearing.

[Jand3rson]

Nice find, Heeter! Very informative.

[mikeedler]

some info is incorrect though. You can swap 4 and 6 cyl diffs, no problem at all. but cool none the less.

[eco325iX]

New member here... Great link! The only thing is they don't mention the iX on the page. I have been looking for this information for a while now, and can't seem to find it any where. I do think my LSD was swapped out at one time. How can I tell?

[UniqueBmw]

Look on the net !!! or here i have found a way to almost accurately determine your gear ratio....horsepower....et time.... and more...

http://www.speedworldmotorplex.com/calc.htm

Check your tire diameter blah blah
A bunch of things on this site... I hope its useful..

[mops]

Yes, some good info, but does have any detailed technical spacs ?
Like clearances, backlash, freeplay, input shaft torque for the oil sleeve, that kind of stuff so one could rebuild a differential. I think i had a look in bentley, but they dont carry that info.

[TopOfTheLine89]

Anybody know if e12 5 series diffs are swapable??