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PAPER OR PLASTIC => For Sale => Topic started by: bmwman91 on October 19, 2010, 11:38:22 PM

Title: So Cal: FS 3.91 Limited Slip Diff
Post by: bmwman91 on October 19, 2010, 11:38:22 PM

I was asked to list this for the owner who mistakenly bought it for his E28. He can ship if required.

http://ventura.craigslist.org/pts/1983876051.html

Title: So Cal: FS 3.91 Limited Slip Diff
Post by: ///digitalme on October 20, 2010, 11:23:06 PM

Quote from: bmwman91;97712

I was asked to list this for the owner who mistakenly bought it for his E28. He can ship if required.

http://ventura.craigslist.org/pts/1983876051.html

is that a good lsd for a 318is?
i need an lsd

Title: So Cal: FS 3.91 Limited Slip Diff
Post by: vpilarry on October 21, 2010, 12:07:08 PM

You'll have to verify that it'll fit (all E30s use the same rear subframe which is what the diff bolts to but the output flange is different in some way so I don't know), however I put a 3.91 from an 325is automatic in my 318is - its great. Drops the revs about 500 rpm at 60 mph and it doesn't run out of revs in 1st gear like with the 4.10. Then again I've done some engine mods and am running a 323i flywheel so I don't really need the higher gearing of the 4.10.

Title: So Cal: FS 3.91 Limited Slip Diff
Post by: bwawuz02 on October 22, 2010, 05:30:58 PM

you can find a perfect fit, small case, 3.91 LSD at your local yard. Just gotta find an 85 318i. I found one on eBay from an unknowing seller w/supposedly 90k miles on it for $250 shipped. Upside of a slow economy = buyers market. Swapping to 205/50/15 tires yields almost same gearing as 4.10, but I might get a set of 215/50/15s, can't decide...