A high-rpm engine condition in which 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. Most valve lifters have an oil-lubricated hardened face that slides on the cam lobe. Signifies the total intake and exhaust valves in an engine.
More valves allow the engine to breathe better at high RPM and produce more power.
The collection of parts that make the valves operate. VEE Engine An engine with cylinders arranged in two rows at an angle to the common crankshaft. A four-seater in which two passengers faced the driver. Used around the turn of the century. Viscous Coupling A particular kind of fluid coupling in which the input and output shafts mate with thin, alternately spaced discs in a cylindrical chamber.