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The proper installation of CHE valve guides is very important to the longevity and performance of the entire valve train.

  1. Inspect “cylinder head” and remove any debris and burrs.
  2. Measure “cylinder head” guide hole.  Press fit of 0.0015 is recommended (steel and aluminum heads.)
  3. Heat the “cylinder head” to approximately 250 Degrees F.
  4. Cool valve guides. Freeze or colder (less than 32 degrees F)
  5. Put a coat of light oil on the guide.
  6. In most instances the guide can be installed by hand. (If an air tool is deemed necessary, use the lowest air pressure possible and install a plastic washer or O-ring on the mating surface of the driver to prevent damage to the top of the valve guide.)
  7. Ensure that guide is driven in straight and is completely seated into the “cylinder head”.
  8. Valve guides should be honed to their finished size. We highly recommend using “Sunnen” abrasive # L10-A45 (or equivalent) available from an industrial supplier.

NOTE: Under no circumstance should any adhesive, sealant or similar compound be used when installing valve guides. The substances act as insulators and will reduce heat transfer from the guide into the “cylinder head”.

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