Quote:
Originally Posted by stugray
Nice cut & paste, but we dont know who your were directing that at.
Even "internally" balanced engines generate vibrations since the reciprocating masses are not rotating perfectly co-planar (the rod journals are offset from one another).
This causes vibrations that can be partially nullified by a harmonic dampener attached to the rotating mass.
And I fully understand engine balancing as I paid extra for it to have my racing boxer engine balanced.
And even though a boxer engine is "internally balanced" they still wanted to balance the entire rotating mass as a unit, and did not balance the front pulley & FW separately (for the final balance)
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It's just information relevant to the discussion.
The stock motor is balanced.
You add shit to it like flywheels and clutches.... if those aren't balanced, the entire assembly becomes unbalanced and you put your bearings at risk.
The stock pulley might help at this point.
That's my point because I don't see how else the combination of a flywheel and pulley leads to catastrophic engine failure whereas just 1 of the 2 is fine.