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 ...

Setting valve lash has nearly become a lost art. Hydraulic lifters are so prevalent and so efficient that many enthusiasts resort to the old way or doing it—engine running, oil spewing everywhere. Let ...

Incorrect valve adjustment can cause serious engine performance problems. Learn what happens when valve clearances are set ...

The choke valve in an engine's carburetor, whether it's a Holley carburetor or another brand, helps a cold engine start by restricting some of the airflow into it. When the engine is cold, the choke ...

Wear in engine valve systems arises from the complex interaction of mechanical loading, high temperatures and chemical environments at the valve–seat and valve–guide interfaces. Contact between the ...