Originally Posted by flinchy
It's impossible for an inline 6 to have major vibrations at high rpm's as they're perfectly harmonically balanced
That's not how it works -_-
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.