Derek Scott forms Mid-South Performance

By Fergus Ogilvy Atoka, TN: Derek Scott has formed a racing parts supply house in Atoka, 30 miles northeast of Memphis, Tennessee. Serving engine builders chiefly, Scott is highly regarded having served the past dozen years or more at Comp Cams. He developed an early...

Compression Lesson

An engine’s compression ratio has a direct effect on it’s on-track performance, according to Dick Boyer of PMB Performance Products.  “If  you pay attention, you’ll see it nose over at the end of the straightaway,” says Boyer. “The...

Inspecting a Multi-disc Clutch

by Jim Mozart Photos by Moore Good Ink Commonly, multi-disc racing clutches vary from 4.25-inch to 7.25-inch. Racers often favor the smallest diameter clutches available because they believe an advantage can be found in its lighter rotating mass. Yet experience...