Knock, knock. No, we’ll spare you the bad joke, because we are discussing those annoying engine knocks. Some people call it knock, some call it ping, others call it clatter. No matter what you call it ...

For a variety of reasons, race engines can experience either or both these conditions involving uncontrolled combustion. And, we all know either or both can cause power losses and potentially damaged ...

Under the necessary conditions of ignition and proper burn rates (cylinder pressure history), both these conditions can exist in virtually any engine. But, in particular, they certainly apply to race ...