Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...

With some Winston Cup engines now using multiple lobe profiles on the same shaft, how can rocker-arm ratios be selected accordingly? Let's talk about this for a moment. The issue takes us back several ...