Quote:
Originally Posted by tjts1
The 3 cylinder vibrates a lot more than the 4 and it also requires a balance shaft. End of story.
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I'm sorry, but this is not true.
I invite you to read the pages you posted. It does a REALLY good job of explaining it all - I never understood it until I read your article.
The 4 cylinder needs TWO counter rotating ballancer shafts, and it still has third order issues.
The 3 cylinder only needs one simple ballancer shaft, and it is intrinsicly more ballanced.