anyone know how i can tell what diff ratio i have.... My car is a 89 325 I i was told it came with lsd Thank you in advance
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If the diff isn't too rusty, there should be a large S on the bottom to signify LSD. If you don't see that, the ratio tag will be on one of the bolts holding the diff cover on. There will be a S preceding the ratio numbers.
Another was to tell is to jack one rear wheel off the ground and see if it spins freely. If not, it is a LSD.
The 25% is the lockup ratio of the diff.Byron
Leichtbau
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%25 is the lock up ratio (standard % for stock lsd diffs)...Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205
OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827
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Originally posted by E30_fiend View Post99% chance its an open differential. If you have a 5 speed, you have a 3.73 open diff. If you have an auto, its a 4.10 open diff. The only way you have an LSD is if the previous owner changed it, unlikely, or the first owner got it from the dealer as an option when it was new
Taylor1987 E30 325is
1999 E46 323i
RIP 1994 E32 740iL
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