An engine's valvesprings play a critical role in its performance, yet those incorrectly chosen for a given application can cause hobbyists to unknowingly point blame in another direction if an engine ...

For many years camshaft technology was limited not by any lack of knowledge on the part of lobe profilers but by valvespring technology that just wasn't up to stabilizing aggressive lobe designs. But ...

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 ...