Valve System

GENERAL SPECIFICATIONS

Valve System
Valves
Valve Face Angle 45 degrees
Valve Face Width 1.25 mm (0.05 inch)
Valve Lash Net Lash - No Adjustment
Valve Lift
Valve Lift
Intake 11.6 mm (0.457 inch)
Exhaust 11.85 mm (0.466 inch)
Valve Seat
Angle 46 degrees
Runout 0.05 mm (0.002 inch)
Valve Seat Width
Exhaust 1.78 mm (0.07 inch)
Intake 1.02 mm (0.04 inch)
Valve Stem Diameter
Production 7.955 - 7.976 mm (0.313 - 0.314 inch)
Service 7.95 mm (0.313 inch)
Stem-to-Guide Clearance
Production - Intake 0.025 - 0.066 mm (0.001 - 0.0026 inch)
Service - Intake 0.093 mm (0.0037 inch)
Production - Exhaust 0.025 - 0.066 mm (0.001 - 0.0026 inch)
Service - Exhaust 0.093 mm (0.0037 inch)
Rocker Arms
Valve Rocker Arm Ratio 1.70:1
Valve Springs
Free Length 52.9 mm (2.08 inch)
Installed Height 45.75 mm (1.8 inch)
Load - Closed 340 N at 45.75 mm (76 lbs. at 1.8 inch)
Load - Open 980 N at 33.55 mm (220 lbs. at 1.32 inch)