Tag: vvt

Variable Valve Timing and Performance Applications Part I: Cam Selection

by HotRod Professional | Aug 1, 2013 | HOTROD Professional Features | 0

Lots and lots of critical questions, and you’ll need your sharpest wits and the advice of the cam grinders to answer them accurately

VANOS Variable Valve Timing: Evolution, Troubles, and Service

by the bimmer pub | Mar 25, 2013 | BMW, Engine Mechanical, the bimmer pub features | 0

Valve diameter, lift, and overlap are all contributing factors to the volumetric efficiency of an engine. If you can vary the relationship between the intake and exhaust valves you can broaden the power band and still have a smooth, clean idle.Â Variable valve timing is a great advance — as long as we can keep it working.