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Service Bulletin: '39-'42 Valve Clearances

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  • mrcooby
    To check the clearance between the tappet and valve stem, crank the engine to bring the tappet on the low point of the cam. With the valve held firmly down to
    Message 1 of 1 , Nov 21, 2008
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      To check the clearance
      between the tappet and
      valve stem, crank the
      engine to bring the
      tappet on the low point
      of the cam. With the
      valve held firmly down
      to its seat, pass
      a .007" feeler for the
      intake and a .009"
      feeler for the exhaust
      between the tappet and
      valve stem. If the
      feeler cannot pass,
      take the valve out and
      machine the stem to
      achieve the proper
      clearance.
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