valve in head
21Head gasket — Different kinds of gaskets, #4 indicating a V4 or boxer engine head gasket …
22valve face — The outer lower edge of the valve head. The face contacts the valve seat when the valve is closed …
23valve 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 …
24valve seat insert — A hardened steel valve seat that may be removed and replaced. 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 Also see insert …
25valve head — n. the part of a vertically opening valve that is lifted off the valve aperture to open the valve …
26valve stem seal — The oil seal between the valve and the cylinder head which prevents excessive oil leakage from the top of the cylinder head into the combustion chamber …
27head gate — noun 1. regulator consisting of a valve or gate that controls the rate of water flow through a sluice • Syn: ↑sluicegate, ↑sluice valve, ↑floodgate, ↑penstock, ↑water gate • Hypernyms: ↑regulator …
28Head (watercraft) — The head (or heads) is a ship s water closet or toilet.The term derives from sailing ships in which the toilet area for the regular sailors was placed at the head or bow of the ship. In sailing ships this position was sensible for two reasons:… …
29valve clearance — In a reciprocating engine, the clearance between the end of a valve head and a rocker arm when the valve is seated …
30head valve — (MOLLUSCA: Polyplacophora) The anterior valve of chitons …
