The valvespring appears to be no more complicated than the spring that swings your screen door shut behind you. Granted, the concept is pretty simple, but in the context of the engine's valvetrain, ...

Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...

Although the basic purpose of a valvespring is to close the valve while also ensuring that the valvetrain stays in contact with the cam lobe, it must perform this feat under grueling conditions that ...

The valvespring is the curse of the overhead-valve, pushrod V-8. Racers and savvy enthusiasts have long been conscious of the effects of valvesprings going away. Take a cruise through the pits of any ...