Re: 1954 Patty valve job

Posted by Owen_Dyneto On 2015/2/8 9:26:35

Check the guides for excessive wear, especially the exhaust guides. Measure the guide depth from the block deck before removing! Keep the seats narrow. If both the valve and seat surfaces are power-surfaced, resist the temptation to hand-lap, it just degrades the surface. After the surfaces are refaced, use a soft pencil (or Prussian Blue or Dychem) and make a series of radial lines across the valve face - then rotate the valve by hand to check for contact. Don't forget to check and adjust if necessary the hydraulic take up reserve clearance, a special tool is required for that and is available. Access the valve keepers by removing the front right wheel and going in thru the inner fender, easy enough though it's tight quarters for the valves just behind the manifold junction; removing the manifolds not necessary but does make it easier.

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