Desmodromic valvetrains allow for higher revs without needing to worry about valve float. So why do automakers not often use ...

Pushrod engines may not be high-tech by today's standards, but they soldier on and have benefits of their own. One downfall, however, is their ability to rev. Pushrod engines tend to have rather low ...

Think of the camshaft as your engine's brain. It makes all the decisions as to when the valves should open or close, how long they stay open, when valve overlap occurs, and basically, everything else ...

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 ...

Four-stroke engines, which make up 99% of vehicles on the road, rely on a system for managing air intake, compression, ...