Usage:
(1) Bore in valve guide:
Inlet valve:
Diesel ... .4985-.5005 in.(12,66-12,71 mm)
Gas ... .5000-.5020 in.(12,70-12,75 mm)
Exhaust valve:
Diesel and Gas ... .5000-.5020 in.(12,70-12,75 mm)
(2) Length of guide
Inlet valve ... 5.062 in.(128,57 mm)
Exhaust valve ... 5.438 in.(138,13 mm)
(3) Bore depth in head for insert ... .6355-.6375 in.(16,142-16,192 mm)
(4) Bore in head for inlet insert ... 2.586-2.587 in.(65,68-65,70 mm)
Diameter of inlet insert ... 2.5895-2.5905 in.(65,773-65,799 mm)
Bore in head for exhaust insert ... 2.431-2.432 in.(61,75-61,77 mm)
Diameter of exhaust insert ... 2.4345-2.4355 in.(61,84-61,86 mm)
(5) Width of valve seat (maximum):
Diesel engine inlet valve ... .073 in.(1,85 mm)
Diesel engine exhaust valve ... .072 in.(1,83 mm)
Gas engine inlet valve ... .082 in.(2,082 mm)
Gas engine exhaust valve ... .115 in.(2,919 mm)
(6) Angle to grind insert face to reduce seat maximum diameter ... 15°
(7) Closed inlet valve minimum projection ... .119 in.(3,02 mm)
Closed inlet valve maximum projection ... .165 in.(4,19 mm)
Closed exhaust valve minimum projection ... .104 in.(2,641 mm)
Closed exhaust valve maximum projection ... .165 in.(4,19 mm)
(8) Angle of valve seat ... 30°
(9) Diameter of valve seat:
Inlet seat minimum permissible ... 2.457 in.(62,41 mm)
Inlet seat maximum permissible ... 2.480 in.(62,99 mm)
Exhaust seat minimum permissible ... 2.302 in.(58,47 mm)
Exhaust seat maximum permissible ... 2.325 in.(59,05 mm)
(10) Projection of valve guide above cylinder head (Later type Gas Engines) ... 1.750 in.(44,45 mm)