When to check the valve stem installed height?
When to check the valve stem installed height? Check valve stem installed height any time the valves or seats have been replaced or machined. Valves become stretched at the neck just above the fillet. This stretching is known as stem necking. It's the result of hot exhaust gases swirling around the neck. Valve stem installed height is different than valve spring installed height. Why is one valve stem higher than the other? If one valve stem is higher than the others, suspect that the valve face or seat is worn. A valve stem height gauge may be required to measure...