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Old 04-22-2013, 09:05 AM   #42
Mikem53
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Quote:
Originally Posted by russv View Post
Having owned 10 Hondas and 1 Acura I can attest to the smoothness of Honda 4 cylinder engines (balance shafts being irrelevant to the topic), but I'm not convinced the Subaru flat 4 is any smoother. My opinion.
How can balance shafts be irrelevant to the subject when they are used for the purpose of "balancing" the rotating mass of an engine that is not balanced by design?
Whereas the boxer engine needs no special device to mask the vibrations.
What you perceive as smoothness is balance shafts, hydraulic motor mounts, harmonic balancers... Etc...
The point is, the boxer engine is inherently smoother by design than any inline 4 banger.. What you feel as the end result is due to many other things which cause NVH..
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