New 2009 2010 BMW Z4 - ZPOST - View Single Post - 23i 6MT MY2011

jannisa · 05-02-2013, 11:32 AM

Correct, the 23i has a final gear ratio of 3.64 :

http://realoem.com/bmw/showparts.do?...84&hg=33&fg=05

and the 30i 4.27 :

http://realoem.com/bmw/showparts.do?...84&hg=33&fg=05

Nice thought you 're having, you 'll only need the crown and pinion to modify your final drive so no need to deal with birds (don't like k. that's it), any competent shop that 's done the swap before could undertake it once you source the parts which shouldn't be that difficult.

However you 'll miss the power, the 30i should be the most balanced car of the series.

05-02-2013, 11:32 AM	#2
jannisa Lieutenant 54 Rep 546 Posts Drives: Z4 Sdrive35i Join Date: Jun 2009 Location: Greece iTrader: (0)	Correct, the 23i has a final gear ratio of 3.64 : http://realoem.com/bmw/showparts.do?...84&hg=33&fg=05 and the 30i 4.27 : http://realoem.com/bmw/showparts.do?...84&hg=33&fg=05 Nice thought you 're having, you 'll only need the crown and pinion to modify your final drive so no need to deal with birds (don't like k. that's it), any competent shop that 's done the swap before could undertake it once you source the parts which shouldn't be that difficult. However you 'll miss the power, the 30i should be the most balanced car of the series.
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