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      01-17-2013, 12:55 PM   #125
Obioban
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Drives: 05 M3, 95 M3 euro, 01 M5, e91
Join Date: Apr 2008
Location: West Chester, PA

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Quote:
Originally Posted by Holander View Post
I know what I am talking. Inline six have major harmonic vibrations on high rpms, because crank is so long (S54 have low rod ratio too). To handle vibrations S54 Block is made steel not aluminium and Crank and rod bearings are bigger than normal M5X engine.
This is correct.