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Valve and Seat Refacing Measurements

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NOTE: Refer to SPECIFICATIONS .
NOTE: After grinding valves or valve seats, check valve clearance.
  1. Check the valve head and seat.
    • Check valve angles.
    • Check margin width.
    • Be sure margin width is within specification.
  2. Fig 1: Checking Valve Head And Seat
    GF0000213Courtesy of FORD MOTOR CO.
  3. Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.