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What Is Variable Valve Timing, And How Does It Work?

There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...
Hot Rod

Why Variable Valve Timing? IVC Systems' 1999 Breakthrough Helps to Answer

Every aspect of an engine is a compromise: torque for horsepower, efficiency for emissions, performance for fuel economy, compression for octane tolerance. During the evolution of the internal ...
SlashGear

What Was The First Engine To Feature Variable Valve Timing & Why Was It Such A Game Changer?

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, ...
Hot Rod

GM's Variable Valve Timing System Performance Test - 15 Degrees Of Separation - Speed Parts Testing

The tough guy in you says to stab that cam in retarded a few degrees for maximum top-end horsepower, while your more practical alter ego suggests advancing it a hair for improved low-end torque and ...