The internal combustion engine lives by some pretty basic principles, some of which include letting air in, compressing said air, and letting air out. An engine's valves come into play during each of ...

The purpose of your engine is to compress fuel and air and then ignite it, creating heat energy that then makes mechanical motion. If your engine can't compress the air and fuel properly, the engine ...

From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...

Modern engines contain hundreds – nay – likely thousands of different parts. There are valves and springs, at least one camshaft, engines also have bearing inserts, an oil pump, numerous gaskets, ...

Last month, we took you through the tear down and inspection of Gary Schweitzer's '65 200ci six-cylinder engine at JGM Performance Engineering. We learned during the process that 35,000 original miles ...