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Old 18th January 2009, 12:03
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Thanks, i'll stick with what i've got and see how it goes!

Peter

Quote:
Originally Posted by Patrick View Post
I can't seen any reason why you'd want to use the M20 fly if the gear box is also from an E36.

With regards to diffs the sporty E30 models as a 3.91 ratio (this is the one I have for the Sportster). The E36's tended to have 3.15 in the 328. E36's also had a larger tyre rolling radius than the E30. Not sure on box ratios but the 5th gear tends to vary between models and range which is quite possibly why he's suggesting a diff change as well.

Richard's running a 3.38 diff on his M52B28 / ZF 5 speed which results in a top speed of 130mph. Get's there very quickly (as tested on the autobahn). He's got a 3.15 LSD top drop in at some point which will drop the rev a bit at cruising speed which should help economy a bit. The other reason for that change is that its barely worth using 1st gear when pulling away.

Saying that some nut cases run 4.41 diff with an M50/M52 conversion!
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