10-27-2012, 06:31 AM
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Officially Welcomed to the 'Fest
Location: S.F. Bay Area
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Join Date: May 2008
Posts: 6,467
Mein Auto: 2010 335d
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Quote:
Originally Posted by 62Lincoln
GBD, I think you'll need to address the difference in final drive ratios. From the factory, the 335i is 3.462, and our d is 2.813. I don't know if Quaife varies final drives or not, but that would be the central issue, as I would assume the fitment would be the same. Can you contact Quaife directly?
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The issue is with the different gear ratios between the 335i vs. 335d. Since the ring gear is welded on the 335d, there are two options - 1.) swap for a bolted 335i differential, or 2.) find a machine shop that can weld a new 2.81 ring gear to the quaiffe differential. If the 335i differential is swapped, fuel economy will suffer and you might have driveability issues. The best solution would be finding a shop that can weld the ring gear.
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