Ted Posted March 17, 2012 Report Share Posted March 17, 2012 What are the different ratios for the E30 LSD diff. I have one here that looks like a 3:40 Quote Link to comment Share on other sites More sharing options...
straight6pwr Posted March 17, 2012 Report Share Posted March 17, 2012 (edited) where did you get this LSD? 3.40 is not a diff ratio, but the 3.46 is close. how did you determine that number, by the tag or by rotating the diff?heres the best list i could compile:e30 U.S. OE LSDs:2.932.793.733.914.10 4.27 4.45 others (from other models/etc):3.463.25on an unrelated note, how much fun would a 4.45 diff be? torque monster! Edited March 17, 2012 by straight6pwr Quote Link to comment Share on other sites More sharing options...
Ted Posted March 17, 2012 Author Report Share Posted March 17, 2012 Tag is rusted. Got it from rotating the diff. What models carry this diff. Quote Link to comment Share on other sites More sharing options...
Earl Posted March 17, 2012 Report Share Posted March 17, 2012 4.45 LSD came from active sport TI's I need an LSD. I have an open 4.45I want a 4.10 or 4.27 Quote Link to comment Share on other sites More sharing options...
Ted Posted March 17, 2012 Author Report Share Posted March 17, 2012 I have a 4:10 LSD E30 Quote Link to comment Share on other sites More sharing options...
Ted Posted March 17, 2012 Author Report Share Posted March 17, 2012 Does any one know where a 3:45 LSD came from, which E30 models Quote Link to comment Share on other sites More sharing options...
mystere30 Posted March 17, 2012 Report Share Posted March 17, 2012 ^^^ i dont know but earl i do have a 4.10 LSD that came off a z3...or z4 if you want to buy it. just sitting on my parts car. Quote Link to comment Share on other sites More sharing options...
Earl Posted March 18, 2012 Report Share Posted March 18, 2012 How much? Quote Link to comment Share on other sites More sharing options...
straight6pwr Posted March 18, 2012 Report Share Posted March 18, 2012 the 3:46 diff didnt come with e30s. i think E24/E28s had them back in the day, and the newer ones from the z3/mcoupe are also compatible. Quote Link to comment Share on other sites More sharing options...
Ted Posted March 18, 2012 Author Report Share Posted March 18, 2012 Therefore the diffs from the e24 and e28 are interchangeable with the E30. This one came out from a 1990 325is. Quote Link to comment Share on other sites More sharing options...
straight6pwr Posted March 18, 2012 Report Share Posted March 18, 2012 and you are sure its a 3.46? was the e30 owned by someone who upgraded it in the past?i couldnt say that all of the diffs from the e28 and e24 are compatible, i think some were large case and wouldnt work. Quote Link to comment Share on other sites More sharing options...
Ted Posted March 18, 2012 Author Report Share Posted March 18, 2012 Yes, marked Input pinion and marked axel bearing to housing. And it lines up to around 3:40 Quote Link to comment Share on other sites More sharing options...
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