Quote:
Originally Posted by tsubaki
See if FERM can give you the max rpm's intended for that motor.
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That would be 4500-5500 for acrossflow OMC, but 5200-5500 is best. Whatever you do do not run it at 5750-5800 for sustained periods of time though. Crossflo engines have an inherent harmonic vibration in them at that speed that has resulted in more than one exploded flywheel from sustained running at 5800 RPM's.
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