You probably know that “Redlining” an engine is a bad thing. It usually means you have punched the throttle on your car enough that the engine is spinning into the “red zone” on your tachometer. But what happens when an engine redlines, and can you really damage your engine if it occurs?
Engineers determine the maximum speed that an internal combustion engine can operate at without causing damage and they call that point the redline. The redline of an engine depends on factors such as the mass of the engine parts, composition of the parts and the interrelated balance of components.