Torque it, stretch it, compress it--these are just a few of the exercises that engine builders encounter when assembling a high-performance engine. The process of building a bullet requires the skills ...

Before starting this valvespring story I thought I had a grasp of its mechanics, but then as it developed it became ever more complicated until it reached a point where I doubted if I had any ...

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 ...