Camshaft

A shaft in the engine on which are the lobes (cams) that operate the valves. The camshaft is driven by the crankshaft, via a belt, chain or gears, at one half the crankshaft speed. One or more camshafts regulate the opening and closing of the valves in all piston engines. Boosted engines may benefit from a different camshaft to the stock camshaft, especially if the original engine was naturally aspirated. Typically boosted engines have lower lift and less duration than their n/a versions.
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Camshaft
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