The result is more power and efficiency but at the cost of a little bit more maintenance to ensure that all the parts are working smoothly.The original LT5 DOHC V-8 of the C4 ZR-1 was a technical marvel from every point of view and perspective. The DOHC valvetrain’s strength is a double-edged sword as the valvetrain system uses more parts in its design and is in turn heavier than its SOHC counterparts. While DOHCs do produce more power than their SOHC counterparts it does come with a few downsides, such as maintenance. Thanks to the camshafts being spread apart, the sparkplugs can now be placed in the middle allowing for more efficient combustion resulting in a cleaner burn and better fuel efficiency in theory. Popular examples of this are the newer engines found in the Toyota Corolla Altis. These engines also come with the added advantage of letting the motor rev higher giving it better top-end power. This lets more air into the engine giving it more power. As part of its design, DOHCs allow the intake valves to open at a larger angle compared to the exhaust valves. The DOHC was introduced into the automotive industry as a way to increase the efficiency of an engine without having to upsize its displacement. Now that we have covered a few of the basic terms we can now tackle SOHC vs DOHC and how they differ from one another. The technology is present both in SOHC and DOHC engines. This technology is used in vehicles to enhance performance and fuel efficiency. It is s a technology that helps set the lift duration of the valve inside the motor. These are mechanical components inside an engine that determine how much air comes in and out of the combustion chamber of the motor It then opens the exhaust valves to let the remaining gases escape the combustion chamber. As the camshaft rotates the differently positioned lobes push the intake valves to allow air into the cylinder to let it mix with fuel and combust. It is a rotating cylindrical rod inside an engine that is commonly made of metal that comes with oblong lobes that protrude from it. This controls how much air comes in and out of the engine at any given time.
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