The Difference Between Variable Valve Timing (VVT) And Variable Valve Lift (VVL), Plus How They Work

Variable valve timing and variable valve lift may sound similar, but they're entirely different. Here are the differences between them and how they work.
webBikeWorld

Suzuki Is Working on a New VVT for GSX-R1000

Suzuki’s current GSX-R1000 has a variable valve timing system it got from the GSX-RR Moto GP bike. It’s an all-mechanical system and a darn good one. However, it seems Suzuki will drop that tried and ...
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 ...
webBikeWorld

Techy Stuff: Aprilia’s Getting Variable Valve Timing

We’ve just heard that Piaggio Group, parent company to Aprilia, is working on a mechanical variable valve timing (VVT) system – and the first to reap the benefits of the tech will be none other than ...
The Drive

BMW Motorrad Introduces Boxer Engine With ShiftCam Variable Valve Timing

Variable valve timing isn’t necessarily a new idea, but it is new to BMW motorcycles. With a freshly designed 1,254 cc two-cylinder flat engine, VVT is arriving in BMW bikes for the first time with an ...
Hot Rod

The Advantages of Using a VVT Cam in a Gen IV and Gen V Engine

Decades ago (OK, half a century or more), there was a product advertised in many of the performance magazines called the Varicam. The idea was a set of springs attached to a centrifugal device that ...
DC Velocity

Automotive VVT System Market Garner Growth 4.3%

The global automotive VVT system market size was valued at USD 56.2 billion and expected to reach USD 87.9 billion by 2027, with a compound annual growth rate (CAGR) of 4.3% during the forecast period ...