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      07-26-2012, 11:48 PM   #63
swamp2
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Quote:
Originally Posted by doc19 View Post
I know on the e9x the bulge is there to fit the V8 and have enough air to circulate around the engine - they mentioned it in a BMW documentary on how the engineers from M went to powers that be and told them there needed to be a bulge to get the engine to fit/work correctly, so they added a bulge.
I believe I also read that the bulge served to help meet pedestrian impact safety requirements. Not at all saying it is not also for cooling but it was multipurpose.