Cylinder Head Valve Seat Reconditioning
  1. Bevel the upper and lower edges at the angles shown in the illustration.Check the width of the seat and adjust accordingly.
  1. Make one more very light pass with the 45 ° cutter to remove any possible burrs caused by the other cutters.

    Valve Seat Width

    Intake:
    Standard (New):
    0.850−1.150 mm (0.0335−0.0453 in.)
    Service Limit:
    1.60 mm (0.063 in.)
    Standard (New):
    1.250−1.550 mm (0.0492−0.0610 in.)
    Service Limit:
    2.00 mm (0.079 in.)