valve guide

If there is blue smoke, the car is an oil-burner and may need piston rings or valve guides, both big-ticket items.

The valve guides and valves could be removed without removing the engine from the motorcycle The cylinder heads were integral with the engine.

In most types of reciprocating engines, a valve guide is provided for each poppet valve in the cylinder head.

A valve guide is a cylindrical piece of metal, pressed or integrally cast into the cylinder head, with the valve reciprocating inside it.

Over time, the inner diameter of the valve guide and the outer diameter of the valve stem may become worn.

In the 1980's, many U.S. production engine remanufacturers began reaming valve guides, rather than replacing them, as part of their remanufacturing process.

As valve guides wear, their ability to positively locate the valve to the valve seat decreases.

The shaft guides the plug portion by sliding through a valve guide.

Superior air parts started as a manufacturer of valve guides in 1967.

There were also problems with exhaust valves and valve guides on the engine.