Throughout this site we use many technical terms, and given the breadth of readership our site enjoys, sometimes we are remiss and incorrectly assume everyone knows what we are referring to. For those that do not, here are some explanations of the technical terms use.
Lead, Valve
Valve lead is the crankshaft angle before TDC for the inlet valve (before BDC for exhaust valve) at which the valve commences to open, this anticipation enhancing gas flow (see Lag).
