A STUDY of the influence of vibration on valve-springs reveals two possible ways in which a valve-spring can vibrate: First, when the frequency of the forced vibration is low, the force tending to ...

What is the most overlooked factor—other than restrictive rules—holding modern racing engines back, preventing them from reaching their full potential? If your answer is "cylinder heads," "connecting ...

Hyundai has issued a safety recall that applies it over 4,000 units of the Palisade built during the 2024 model year. The SUVs included in the campaign could experience a valve spring failure, a ...

For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...