valve head
1valve head — n. the part of a vertically opening valve that is lifted off the valve aperture to open the valve …
2valve head — The surface of the large end of a valve …
3five-valve head — A cylinder head which has five valves per cylinder, usually three intake valves and two exhaust valves …
4two-valve head — A cylinder head with two valves per cylinder …
5head — [1] The upper part of something. [2] A term used to express the increase of energy content in a fluid pumped, expressed in units of energy per unit of mass, usually simply ft (feet). [3] A part of the engine which covers the piston and creates… …
6valve grinding compound — An abrasive compound used for refacing valve seats. The suction cup is placed on the valve head and the valve is pressed into the seat; turning the handle between one s hands will grind the valve into its seat; always use with grinding paste. Not …
7valve seat face — An annular part of a valve head located at the valve seat of the cylinder head …
8valve seat ring — A ring shaped insert of a harder metal than that of the cylinder head; the use of valve seat inserts dispenses with the need for lead in the fuel to act as a lubricant between the valve head and seat …
9valve face — The outer lower edge of the valve head. The face contacts the valve seat when the valve is closed …
10valve margin — The width of the edge of the valve head between the top of the valve and the edge of the face. Too narrow a margin results in preignition and valve damage through over heating …
