Usage:
NOTE: GUIDELINE FOR REUSABLE PARTS; VALVES AND VALVE SPRINGS, Form SEBF8002, has the procedure necessary for checking used valves and valve springs.
(1) 9L9190 Spring for valves (new):
Length under test force ... 1.715 in.(43.56 mm)
Test force ... 35 ± 5 lb.(155 ± 22 N)
Use again minimum load at length under test force ... 29 lb.(130 N)
Length of spring at valve open position ... 1.215 in.(30.86 mm)
Use again minimum load at valve open position ... 146 lb.(650 N)
Free length after test ... 1.855 in.(47.12 mm)
Outside diameter ... 1.440 in.(36.58 mm)
Spring must not be bent more than ... .065 in.(1.65 mm)
(2) Distance from the end of the valve to the valve spring spacer seat ... 2.063 ± .015 in.(52.40 ± 0.38 mm)
(3) Diameter of valve stem:
9L7682 Intake Valve ... .3725 ± .0005 in.(9.462 ± 0.013 mm)
Use again minimum diameter of the valve stem ... .371 in.(9.42 mm)
9L7683 Exhaust Valve (tapered stem):
Head end of valve stem ... .3705 ± .0005 in.(9.411 ± 0.013 mm)
Use again minimum diameter of the head end of valve stem ... .370 in.(9.40 mm)
Lock end of valve stem ... .3715 ± .0005 in.(9.436 ± 0.013 mm)
Use again minimum diameter of the lock end of valve stem ... .369 in.(9.37 mm)
Bore in the valve guides (intake and exhaust) ... .3745 ± .0005 in.(9.512 ± 0.013 mm)
Maximum permissible bore in the valve guides (worn):
Measure .75 in. (19.0 mm) deep in valve guide bore from both ends of the valve guide ... .3760 in.(9.550 mm)
(4) Angle of valve face:
Intake valve ... 30° ± 15'
Exhaust valve ... 45° ± 15'
(5) Diameter of valve head (intake valve) ... 2.094 ± .005 in.(53.19 ± 0.13 mm)
Diameter of valve head (exhaust valve) ... 1.804 ± .005 in.(45.82 ± 0.13 mm)
(6) Thickness of valve lip:
Intake valve ... .091 in.(2.31 mm)
Use again minimum valve lip thickness ... .070 in.(1.78 mm)
Exhaust valve ... .063 in.(1.60 mm)
Use again minimum valve lip thickness ... 0.43 in.(1.09 mm)