This situation recently occurred when we purchased a set of valve locks from a local engine shop. While assembling the valvesprings and retainers, we noticed that one of the locks was not the same as ...

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 ...

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 ...