Inlet Valve
(1) Diameter of the valve seat insert … 54.610 ± 0.013 mm (2.1500 ± .0005 in)
Bore in head for valve seat insert … 54.534 ± 0.013 mm (2.1470 ± .0005 in)
(2) Depth of bore in head for valve seat insert … 11.23 ± 0.05 mm (.442 ± .002 in)
(3) Maximum permissible width of the face of the valve seat insert … 3.05 mm (.120 in)
(4) Distance from head of valve to cylinder head face:
Maximum permissible (valve closed) … 1.73 mm (.068 in)
Minimum permissible (valve closed) … 0.91 mm (.036 in)
(5) Angle of the face of the valve seat insert … 30 1/2 ± 1/2 degrees
(6) Outside diameter of the face of the valve seat insert … 52.23 ± 0.13 mm (2.045 ± .005 in)
Maximum permissible … 52.45 mm (2.065 in)
(7) Angle to grind face of seat insert (to get a reduction of maximum seat diameter) … 15 degrees
Exhaust Valve
(1) Depth of bore in head for valve seat insert … 11.23 ± 0.13 mm (.442 ± .005 in)
(2) Diameter of valve seat insert … 48.565 ± 0.013 mm (1.9120 ± .0005 in)
Bore in head for valve seat insert … 48.489 ± 0.013 mm (1.9090 ± .0005 in)
(3) Maximum permissible width of the face of the valve seat insert … 2.67 mm (.105 in)
(4) Distance from head of valve to cylinder head face:
Maximum permissible (valve closed) … 2.16 mm (.085 in)
Minimum permissible (valve closed) … 1.27 mm (.050 in)
(5) Angle of the face of the valve seat insert … 45 1/2 ± 1/2 degrees
(6) Outside diameter of the face of the valve seat insert … 44.07 ± 0.13 mm (1.735 ± .005 in)
Maximum permissible … 44.70 mm (1.760 in)
(7) Angle to grind face of seat insert (to get a reduction of maximum seat diameter) … 15 degrees
