Dimension & Clearance Specifications - Valve System

Valve Face Angle 45°
Valve Head Edge Margin 0.79 mm (Minimum) (0.031 inch (Minimum))
Valve Lash Net Lash-No Adjustment
Valve Lift (Exhaust) (L35) 10.879 mm (0.4280 inch)
Valve Lift (Exhaust) (LF6) 9.887 mm (0.3890 inch)
Valve Lift (Intake) (L35) 10.527 mm (0.4140 inch)
Valve Lift (Intake) (LF6) 10.215 mm (0.4020 inch)
Valve Lifter Hydraulic Roller
Valve Rocker Arm Ratio 1.5:1
Valve Seat Angle 46°
Valve Seat Runout 0.05 mm (Maximum) (0.002 inch (Maximum))
Valve Seat Width (Exhaust) 1.575 - 2.362 mm (0.065 - 0.098 inch)
Valve Seat Width (Intake) 0.89 - 1.52 mm (0.035 - 0.060 inch)
Valve Spring Free Length 51.3 mm (2.02 inch)
Valve Spring Installed Height (Exhaust) 42.92 - 43.43 mm (1.670 - 1.700 inch)
Valve Spring Installed Height (intake) 42.92 - 43.43 mm (1.670 - 1.700 inch)
Valve Spring Pressure (Closed) 338 - 374 Nm at 43.2 mm (76 - 84 lbs. at 1.70 inch)
Valve Spring Pressure (Open) 832 - 903 Nm at 32.3 mm (187 - 203 lbs. at 1.27 inch)
Valve Stem Clearance (Exhaust-Production) 0.025 - 0.069 mm (0.0010 - 0.0027 inch)
Valve Stem Clearance (Exhaust-Service) 0.025 - 0.094 mm (0.0010 - 0.0037 inch)
Valve Stem Clearance (intake-Production) 0.025 - 0.069 mm (0.0010 - 0.0027 inch)
Valve Stem Clearance (Intake-Service) 0.025 - 0.094 mm (0.0010 - 0.0037 inch)
Valve Stem Oil Seal Installed Height (Measured from the Top of the Large Diameter Valve Guide Bevel to the Bottom of the Valve Stem Oil Seal) 1-2 mm (0.03937 - 0.07874 inch)