Quote:
Originally posted by suginami
FWIW, the only engines that are 100% naturally, inherently balanced are inline 6's and V12's.
Inline 8's, V8's, etc. are not perfectly balanced, and will never be as smooth as an inline 6 or V12.
Inline 4's and V6's are very unbalanced and generally use counter rotating balance shafts to even things out.
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the flat-6 is also 100% naturally balanced.
and not all V12s - only the 60degree V12. The 550 Maranello for example, has a 65degree block.