Cylinder Head Assembly
Cylinder HeadCylinder Head Height/Thickness - Measured from the Cylinder
Head Deck to the Valve Rocker Arm Cover Seal Surface 120.2 mm (4.732 in.)
Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in)
Area 0.08 mm (0.003 in.)
Surface Flatness - Block Deck - Measuring the Overall Length of
the Cylinder Head 0.1 mm (0.004 in.)
Surface Flatness - Exhaust Manifold Deck 0.13 mm (0.005 in.)
Surface Flatness - Intake Manifold Deck 0.08 mm (0.0031 in.)
Valve Guide Installed Height - Measured from the Spring Seat Surface
to the Top of the Guide 17.32 mm (0.682 in.)
Intake Manifold
Surface Flatness - Measured at Gasket Sealing Surfaces and Measured
Within a 200 mm (7.87 in) Area that Includes 2 Runner
Port Openings 0.3 mm (0.118 in.)
Valve System
Valves - Valve Face Angle 45 degrees
Valves - Valve Face Width 1.25 mm (0.05 in.)
Valves - Valve Lash Net Lash - No Adjustment
Valve Lift - Exhaust 12.2 mm (0.48 in.)
Valve Lift - Intake 12.2 mm (0.48 in.)
Valves - Valve Seat Angle 46 degrees
Valves - Valve Seat Runout 0.05 mm (0.002 in.)
Valves - Valve Seat Width - Exhaust 1.78 mm (0.07 in.)
Valves - Seat Width - Intake 1.02 mm (0.04 in.)
Valves - Valve Stem Diameter - Production 7.955-7.976 mm (0.313-0.314 in.)
Valves - Valve Stem Diameter - Service 7.95 mm (0.313 in.)
Valves - Valve Stem-to-Guide Clearance -
Production - Exhaust 0.025-0.066 mm (0.001-0.0026 in.)
Valves - Valve Stem-to-Guide Clearance -
Service - Exhaust 0.093 mm (0.0037 in.)
Valves - Valve Stem-to-Guide Clearance -
Production - Intake 0.025-0.066 mm (0.001-0.0026 in.)
Valves - Valve Stem-to-Guide Clearance -
Service - Intake 0.093 mm (0.0037 in.)
Rocker Arms - Valve Rocker Arm Ratio 1.70:1
Valve Springs - Valve Spring Free Length 52.9 mm (2.08 in.)
Valve Springs - Valve Spring Installed Height 45.75 mm (1.8 in.)
Valve Springs - Valve Spring Load - Closed 340 N at 45.75 mm (76 lb at 1.8 in.)
Valve Springs - Valve Spring Load - Open 980 N at 33.55 mm (220 lb at 1.32 in.)
Service and Repair
Cylinder Head M8 Bolts - in Sequence 30 Nm (22 lb ft.)
Cylinder Head M11 Bolts - First Pass in Sequence 30 Nm (22 lb ft.)
Cylinder Head M11 Bolts - Second Pass in Sequence 90 degrees
Cylinder Head M11 Bolts - Final Pass in Sequence 70 degrees
Cylinder Head Plug 20 Nm (15 lb ft.)
Intake Manifold Bolts - First Pass in Sequence 5 Nm (44 lb in.)
Intake Manifold Bolts - Final Pass in Sequence 10 Nm (89 lb in.)
Camshaft Position (CMP) Actuator Solenoid Valve - First Pass 65 Nm (48 lb ft.)
Camshaft Position (CMP) Actuator Solenoid Valve - Final Pass 90 degrees
Exhaust Manifold Bolts - First Pass 15 Nm (11 lb ft.)
Exhaust Manifold Bolts - Final Pass 20 Nm (15 lb ft.)