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Valve float A condition where the valves in the engine are forced back open before they have had a chance to seat. Brought about (usually) by extremely high rpm. The
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06-19-2017, 11:58 AM
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Join Date: Aug 2014
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Drives: 2013 370z NISMO
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Valve float
A condition where the valves in the engine are forced back open before they have had a chance to seat. Brought about (usually) by extremely high rpm. The Valve lifters lose contact with the cam lobes because the Valve springs are not strong enough to overcome the Momentum of the various Valvetrain components. The onset of valve float prevents higher-rpm operation. Extended periods of valve float will damage the Valvetrain. Also called Valve bounce
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