I have a couple differential questions. I have a 3.73 LSD in my 325i. I know the common swap is a 4.10 LSD. I was running car test, and the 4.10 only gave a .1 second increase in 0-60. I ran a 3.5 diff, and 0-60 dropped from 7.8 to 7.1. 0-30 increased by a little bit with the 3.5. All quarter mile times didn't change. I was wondering if a 3.5 diff would be a wise swap, or if there are any other diffs that I could benifit from. Does a BMW 3.5 diff even exist? Another reason I like the 3.5 diff is because it takes me to 60 in 2nd gear. Thanks.
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97 Cosmos M3 -
A BMW 3.5 diff does not exist but a 3.46 does on some E28's, etc. They're harder to find though than say a 3.25 or 3.73."I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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did the 3.46 come in limited slip?
97 Cosmos M3Comment
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matt, here is what you are looking for on ebay:
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Nando- Thanks for the link. But, I need to figure out if it's limited slip or open.
97 Cosmos M3Comment
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it says LSD in the auction.. but it'd probably be a good idea to ask for a pic of the diff tag to be sure.Comment
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Yes, just have to find them.Originally posted by MattE30"I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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