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What is VVL? What is VVT? How does VVL/VVT work? What is variable valve lift? What is variable valve timing? We're going to ...

Since the beginning of hot rodding, gearheads have endeavored to increase the performance of internal combustion engines through the optimization of valve timing. It's been proven time after time that ...

Harley-Davidson has filed a patent application for a variable valve timing (VVT) V-twin engine, possibly for the Sportster to improve economy and reduce emissions. The iconic American manufacturer has ...

Getting air in and exhaust gases out of the combustion chamber under all speeds and driving conditions is essential for a car’s fuel efficiency and low emissions. That’s why virtually all Chevrolet ...

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 ...

Ben came to MCN back in 1997 fresh from university and dropped plans for a career in law to pursue the dream of writing about bikes for a living. Landing as a junior news reporter he discovered a ...