The first production car engine with variable valve timing (VVT) came from Alfa Romeo in 1980. It was installed in the fuel-injected Alfa Romeo Spider. Before this, a few experimental systems existed, ...
The Difference Between Variable Valve Timing (VVT) And Variable Valve Lift (VVL), Plus How They Work
Variable valve timing (VVT) and variable valve lift (VVL) have very similar names, both referring to variable valve performance. Does that mean that they are basically the same thing? The are most ...
Valves control how air and fuel get in and how exhaust gets out, and theoretically, more of them should translate to better airflow and more power. Before the 80s, two or three valves per cylinder was ...
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