Basics of driving manual 1 no memes trolling copypasta or low quality joke posts or pros and cons of ohc engines vs pushrod engines heavier with the weight of the cams higher up raising the cg of the car potentially costlier. There are even overhead camshaft engines that use pushrods too but these pushrods are very short and dont pass through the engine block or cylinder head casting the complexity of overhead camshaft engines comes in the drive mechanism used to turn the camshafts while pushrod engines can use gears or short chains because the camshaft is . How the valves are related to each and how each works i will also speak of advantages of each of the valve trains dual overhead cams dohc singles overhead cams sohc and overhead valves ohv. An overhead valve engine ohv engine or pushrod engine is a reciprocating piston engine whose poppet valves are sited in the cylinder headan ohv engines valvetrain operates its valves via a camshaft within the cylinder block cam followers or tappets pushrods and rocker arms the ohv engine was an advance over the older flathead engine whose valves were sited within the cylinder . Sohc vs dohc vs pushrod engines camshaft issues by andre roy regarding the advantages of dohc vs sohc or dual overhead cam vs single overhead cam engines dohc has a major marketing advantage with a valve train camshaft lifters pushrods if present rockers valves and springs there is an advantage to light weight
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