Valve clearances are important, but having them done by your dealer can be very expensive; it’s one of the main reasons a lot of bikes are traded in. But ignore them at your peril as over time your ...

Q:I have a 327 in my '31 Ford that features nearly the same cam and components as the one you referenced recently in Pit Stop (Nov. '12). Since a 1.6:1-ratio rocker arm will push the valve a little ...

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 ...