Valve: Specifications

Valves
Valve Guide Inside Diameter 5.500-5.12 mm (0.2166-0.2170 inch)
Valve Head Thickness Intake Valves (Standard) 0.8-1.2 mm (0.03-0.047 inch)
Intake Valves (Minimum Limit) 0.6 mm (0.024 inch)
Exhaust Valves (Standard) 0.8-1.2 mm (0.03-0.047 inch)
Exhaust Valves (Minimum Limit) 0.7 mm (0.027 inch)
Valve Head Angles for Refinishing Area Above Seat Contact Surface 15 Degrees
Seat Contact Surface 45 Degrees
Valve Seating Contact Width Intake Valves 1.1-1.13 mm (0.0433-0.0512 inch)
Valve Stem Outside Diameter Intake Valves 5.465-5.480 mm (0.2152-0.2157 inch)
Valve Stem-to-Valve Guide Clearance Intake Valves (Standard) 0.0209-0.047 mm (0.0008-0.0018 inch)
Intake Valves (Maximum Limit) 0.070 mm (0.0027 inch)
Exhaust Valves (Standard) 0.045-0.072 mm (0.0018-0.0028 inch)
Exhaust Valves (Maximum Limit) 0.090 mm (0.0035 inch)
Valve Spring Free Length Standard 36.83 mm (1.45 inch)
Minimum Limit 35.67 mm (1.4043 in)
Valve Spring Preload Standard 10.7-12.5 kg at 31.5 mm (23.6-27.5 lbs. at 1.24 inch)
Valve Spring Side Clearance (Maximum) 2.0 mm (0.079 inch)