CPR Racing Engine's Martin Marinov said it best to a caller hoping to order bearings without measuring: "This stuff isn't Lego bricks, man!" While practically every part you order is made to the ...

His work transformed the cam from a simple mechanical timer into a precise control device that shapes how an engine makes power, and those early principles still define camshaft design to this day.

A cam phaser is a sprocket which adjusts the position of an engine’s camshaft in relation to its crankshaft and is tuned with a computer-controlled servo. Camshafts control the timing of engine intake ...

Decades ago (OK, half a century or more), there was a product advertised in many of the performance magazines called the Varicam. The idea was a set of springs attached to a centrifugal device that ...