Valve, Intake/Exhaust

VALVES
Face Angle
Intake and Exhaust 44.5 - 45°
Head Diameter
Intake 34.67 - 34.93 mm (1.364 - 1.375 inch)
Exhaust 28.32 - 28.52 mm (1.114 - 1.122 inch)
Valve Length (Overall)
Intake 112.76 - 113.32 mm (4.439 - 4.461 inch)
Exhaust 110.89 - 111.69 mm (4.365 - 4.397 inch)
Valve Stem Diameter
Intake 5.934 - 5.952 mm (0.2337 - 0.2344 inch)
Exhaust 5.906 - 5.924 mm (0.2326 - 0.2333 inch)
VALVE MARGIN
Intake 1.200 - 1.700 mm (0.047 - 0.066 inch)
Service Limit 0.95 mm (1/32 inch)
Exhaust 0.985 - 1.315 mm (0.038 - 0.051 inch)
Service Limit 1.05 mm (3/64 inch)
VALVE STEM TIP HEIGHT
Intake 48.04 mm (1.891 inch)
Exhaust 47.99 mm (1.889 inch)
VALVE STEM TO GUIDE CLEARANCE
Intake 0.048 - 0.066 mm (0.0018 - 0.0025 inch)
Maximum Allowable 0.076 mm (0.003 inch)
Exhaust 0.0736 - 0.094 mm (0.0029 - 0.0037 inch)
Maximum Allowable 0.101 mm (0.004 inch)
VALVE SPRINGS
Free Length (Approximately) 49.2 mm (1.937 inch)
Nominal Force (Valve Closed) 334 N @ 38.0 (75 lbs. @ 1.496 inch)
Nominal Force (Valve Open) 598 N @ 29.75 (134 lbs. @ 1.172 inch)
Installed Height 38.00 mm (1.496 inch)
Number of Coils 6.9
Wire Diameter 3.61 mm (0.142 inch)