Day: 27

Our tech column seems to be gathering quite a following of guys who want to know more about their cars and engines. One reader posted a comment (below) in response to my answer about ignition timing curves. The original post was roughly a year ago and has resulted in over 20 comments on the answer.

Stamped steel rocker arms are common on budget crate engines, and many race classes require the use of stamped steel rockers. Because they do not feature a roller bearing pivot, stamped steel rocker arms generate more friction than performance-oriented roller rockers. That’s why proper break-in of stamped steel rockers is a must to maximize the lifespan