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Engine Valves & Valve Springs Specifications

VALVES & VALVE SPRINGS

Application Specification
Valves
Face Angle 45°
Head Diameter (1)
Minimum Margin
Intake .035" (0.9 mm)
Exhaust .039" (1.0 mm)
Minimum Refinish Length
Intake
Standard 4.052" (121.92 mm)
Minimum (1)
Exhaust
Standard 3.993" (101.42 mm)
Minimum (1)
Stem Diameter
Intake .2350-.2356" (5.97-5.984 mm)
Minimum (1)
Exhaust .2348-.2354" (5.964-5.979 mm)
Minimum (1)
Installed Height (2)
Intake
Standard 1.432-.1467 (36.37-37.26)
Service Limit (3) 1.467-1.495 (36.37-37.97)
Beyond Limit (4) 1.495 (36.37)
Exhaust
Standard 1.431-1.467 (36.53-37.26)
Service Limit (3)1.467-1.494 (36.37-37.95)
Beyond Limit (4) 1.494 (37.95)
Out-Of-Square
Intake & Exhaust .0638" (1.621 mm)
(1) Information is not available from manufacturer.
(2) Valve height is measured from top of installed valve to spring seat.
(3) If installed height exceeds specification, adjust with washer on spring seat area of cylinder head.
(4) If installed height exceeds beyond limit specification, replace cylinder head.