GM Powertrain announced today it will deliver a 3.6-liter V-6 gasoline engine with direct injection and variable valve timing (VVT) technologies in the 2008 model year. A vehicle application will be ...

Dealing with an engine is one of the most complex tasks anyone can perform in a vehicle. Sometimes, removing any component is just a step to do something, such as removing the timing chain. Although ...

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 ...

Your VVTi engine, as with all of their kind, need to work at a certain temperature to be efficient, not too low, not too high, just around 90 degrees Celsius. When the engine is cold, the thermostat ...

When Chevrolet announced that the fifth-generation Camaro would come with two different V-8 engine depending on what transmission the customer ordered, many enthusiasts were a bit confused. The LS3, ...

Hello Paul, I drive a Toyota Wish with a VVTi engine. It has been running well until recently when it started reducing engine power or hesitating. A computer diagnosis reported it. Can the VVTi ...

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 ...

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 ...

Engineering patents often provide an insight into the future of the automobile, and if Nissan's latest is anything to go by, the Japanese brand might have found a way to squeeze a little extra life ...

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 ...