Cylinder Head Valve Seat Reconditioning
  1. Bevel the upper edge of the seat with the 30 ° cutter and the lower edge of the seat with the 60 ° cutter. 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):
    0.85−1.15 mm (0.033−0.045 in.)
    Service Limit:
    1.6 mm (0.06 in)
    Exhaust:
    Standard (New):
    1.25−1.55 mm (0.049−0.061 in.)
    Service Limit:
    2.0 mm (0.08 in.)