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Valve Guide Inner Diameter

Valve Guide Inner Diameter

1. NOTE: Valve guides tend to wear in an hourglass pattern. The ball gauge can be inserted into the combustion chamber side of the valve guide, if necessary.

Use a ball gauge to determine the inner diameter of the valve guides in 2 directions at the top, middle and bottom of the valve guide.





2. Measure the ball gauge with a micrometer.





3. If the valve guide is not within specifications, install a new cylinder head assembly.