Usage:
1 Guide bore (installed) ... 9,50-9,56 mm .374-.376 in.
2 Valve guide projection above head ... 22,23 mm .875 in.
3 Depth of bore in head ... 11,38-11,43 mm .448-.450 in.
4 Diameter-inlet valve seat insert ... 54,05-54,08 mm 2.1280-2.1290 in.
Bore in head for seat insert ... 53,97-54,00 mm 2.1250-2.1260 in.
Diameter-exhaust valve seat insert ... 50,88-50,90 mm 2.0030-2.0040 in.
Bore in head for seat insert ... 50,80-50,83 mm 2.0000-2.0010 in.
5 Angle-valve seat face ... 30° 30°
6 Maximum permissible width (valve seat) exhaust ... 1,93 mm .076 in.
Maximum permissible width (valve seat) inlet ... 1,93 mm .076 in.
7 Closed valve projection inlet (minimum permissible) ... 2,23 mm .088 in.
Maximum permissible projection ... 3,50 mm .138 in.
Closed valve projection exhaust (minimum permissible) ... 2,81 mm .111 in.
Maximum permissible projection ... 4,08 mm .161 in.
8 Valve seat face diameter Inlet seat maximum permissible ... 50,8 mm 2.000 in.
Exhaust seat minimum permissible ... 45,97 mm 1.810 in.
Exhaust seat maximum permissible ... 47,62 mm 1.875 in.
9 Angle to grind insert seat face to reduce maximum seat diameter ... 15° 15°