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

Dictionary of automotive terms. 2015.

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  • Float valve — Float Float (fl[=o]t), n.[OE. flote ship, boat, fleet, AS. flota ship, fr. fle[ o]tan to float; akin to D. vloot fleet, G. floss raft, Icel. floti float, raft, fleet, Sw. flotta. [root] 84. See {Fleet}, v. i., and cf. {Flotilla}, {Flotsam},… …   The Collaborative International Dictionary of English

  • Float — (fl[=o]t), n.[OE. flote ship, boat, fleet, AS. flota ship, fr. fle[ o]tan to float; akin to D. vloot fleet, G. floss raft, Icel. floti float, raft, fleet, Sw. flotta. [root] 84. See {Fleet}, v. i., and cf. {Flotilla}, {Flotsam}, {Plover}.] 1.… …   The Collaborative International Dictionary of English

  • Float board — Float Float (fl[=o]t), n.[OE. flote ship, boat, fleet, AS. flota ship, fr. fle[ o]tan to float; akin to D. vloot fleet, G. floss raft, Icel. floti float, raft, fleet, Sw. flotta. [root] 84. See {Fleet}, v. i., and cf. {Flotilla}, {Flotsam},… …   The Collaborative International Dictionary of English

  • Float case — Float Float (fl[=o]t), n.[OE. flote ship, boat, fleet, AS. flota ship, fr. fle[ o]tan to float; akin to D. vloot fleet, G. floss raft, Icel. floti float, raft, fleet, Sw. flotta. [root] 84. See {Fleet}, v. i., and cf. {Flotilla}, {Flotsam},… …   The Collaborative International Dictionary of English

  • Float copper — Float Float (fl[=o]t), n.[OE. flote ship, boat, fleet, AS. flota ship, fr. fle[ o]tan to float; akin to D. vloot fleet, G. floss raft, Icel. floti float, raft, fleet, Sw. flotta. [root] 84. See {Fleet}, v. i., and cf. {Flotilla}, {Flotsam},… …   The Collaborative International Dictionary of English

  • Float gold — Float Float (fl[=o]t), n.[OE. flote ship, boat, fleet, AS. flota ship, fr. fle[ o]tan to float; akin to D. vloot fleet, G. floss raft, Icel. floti float, raft, fleet, Sw. flotta. [root] 84. See {Fleet}, v. i., and cf. {Flotilla}, {Flotsam},… …   The Collaborative International Dictionary of English

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