You have likely heard of variable valve timing by one of the names manufacturers have for the system, such as VVT-i or VTEC. So what is it and what does it do?

Check out this article on variable valve timing systems from Honda's VTEC to Toyota's VVT-i and Nissan's CVTC, from Super Street Magazine.

Explaining the process with words alone doesn't do it justice. Jason Fenske at Engineering Explained put together a video showing exactly how VTEC works, using real Honda engines and visual diagrams.

To get an idea of how quickly today's engines move, look no further than the variable valve system. Read more at Car and Driver.

Variable valve timing has been available in cars for almost half a century, first appearing in the Alfa Romeo Spider as far back as 1980.

Among them, the three-dimensional cam for continuous variable valve lift and timing mechanism has been developed as a technology applicable to motorcycles, because of its small, compact layout and ...

Taglioni’s reasoning behind using a desmo system was to ‘force the valves to comply with the timing diagram as consistently as possible.’ ...

Suzuki might deliver a new v-twin engine equipped with a variable valve timing system. The power plant might be installed in the V-Strom 1000 ...