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This design reduces valvetrain inertia more than is the case with an SOHC engine, since the rocker arms are reduced in size or eliminated.

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The higher engine speeds thus allowed increases power output for a given torque output.on the net and you won't have a problem finding whatever you're after as it has tons of hot various categories.Melayu Spy Videos is ready to make you horny any day any time!In an inline engine, this means there is one camshaft in the head, whilst in an engine with more than one cylinder head, such as a V engine or a horizontally-opposed engine (boxer; flat engine) – there are two camshafts, one per cylinder bank.In the SOHC design, the camshaft operates the valves directly, traditionally via a bucket tappet; or via an intermediary rocker a valvetrain configuration which places the camshaft of an internal combustion engine of the reciprocating type within the cylinder heads ("above" the pistons and combustion chambers) and drives the valves or lifters in a more direct manner compared with overhead valves (OHV) and pushrods.

Though the system that drives the camshafts may be more complex, most engine manufacturers accept that added complexity as a trade-off for better engine performance and greater design flexibility.

SOHC designs offer reduced complexity compared with overhead valve designs when used for multivalve cylinder heads, in which each cylinder has more than two valves.

An example of an SOHC design using shim and bucket valve adjustment was the engine installed in the Hillman Imp (four cylinder, eight valve), a small, early-1960s two-door saloon car (sedan) with a rear-mounted aluminium-alloy engine based on the Coventry Climax FWMA race engines.

Engines having more than one bank of cylinders (e.g.

V6, V8 – where two cylinder banks meet to form a "V") with two camshafts in total remain SOHC unless each cylinder bank has two camshafts; the latter are DOHC, and are often known as "quad cam".

SOHC cylinder heads are generally less expensive to manufacture than double overhead camshaft (DOHC) cylinder heads.