Does your engine need a valve adjustment? It depends on the age, condition and brand of vehicle you’re driving. Due to the popularization of roller-follower valve train designs that reduce friction ...

Ask any engine builder where he would concentrate his efforts if he could only modify one component in an engine, and most would say the cylinder heads. Even the sleepiest street engine can see power ...

Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...