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BMW E30 diff. gear ratios

Old 12-18-03, 10:32 PM
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Kim
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BMW E30 diff. gear ratios

Im planning to build a 13B N/A clubracer/trackdaycar based on a 3series BMW as they arte very common overhere and FCs aint but also for the Project/coolness factor.

So does anyone know the various differential gear ratios for the 83-91 BMW 3 series?

Kim
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Old 12-19-03, 11:46 AM
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No idea, sorry, but there's plenty of Bimmer forums that should know..

Good luck.

PaulC
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Old 12-20-03, 01:09 AM
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why didnt I think of that, it seems like this is THE forum that will eventually blind you from anything else
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Old 12-20-03, 09:38 PM
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If anyone cares... BMW E30 320i has 4,1:1 diff. which is next to perfect as its also a lighter car.
I cant wait to get started
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Old 12-23-03, 02:43 PM
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Did I read that right? You're planning a 13B in a BMW? Now, that's a whole different story. We thought you'd go boinger, which would make you an ex-friend
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Old 12-24-03, 05:51 PM
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No Bart, how could you even think that low of me, sure BMW makes some great engines just not for racing, well atleast not in my price range.
Im picking up a 4.45:1 diff in january, which should make for some good acceleration. Stripped E30 13B = Teh shiaath.

Once you raced a rotary there is no way back.
Im allways thinking : "hmm that new sedan looks nice, maybe with a rotary Id buy it"

Last edited by Kim; 12-24-03 at 05:56 PM.
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Old 12-30-03, 03:40 PM
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I race with some of the guys from here, a very helthful group!

http://www.e30racing.com.au/
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