Cylinder Head Assembly

Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm ( (6.0 in) Area 0.11 mm (0.004 in.)
Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck 0.22 mm (0.008 in.)
Cylinder Head
Cylinder Head Height/Thickness *1 120.2 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 *3 17.32 mm (0.682 in.)
Intake Manifold
Surface Flatness *2 0.3 mm (0.118 in.)
Valve System
Valves - Valve Face Angle 45 °
Valves - Valve Face Width 1.25 mm (0.05 in.)
Valves - Valve Lash Net Lash - No Adjustment
Valve Lift - Exhaust - Non Active Fuel Management 12.19 mm (0.480 in.)
Valve Lift - Exhaust - Active Fuel Management 12.41 mm (0.489 in.)
Valve Lift - Intake - Non Active Fuel Management 12.04 mm (0.474 in.)
Valve Lift - Intake - Active Fuel Management 12.24 mm (0.488 in.)
Valves - Valve Seat Angle 46 °
Valves - Valve Seat Runout 0.05 mm (0.002 in.)
Valves - Valve Seat Width - Exhaust 1.78 mm (0.07 in.)
Valves - Valve 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.)
Cylinder Head Coolant Plug 20 Nm (15 lb ft.)
Cylinder Head to Cylinder Block Retaining Bolts M8 30 Nm (22 lb ft.)
Cylinder Head to Cylinder Block Retaining Bolts M11
First Pass 30 Nm (22 lb ft.)
Second Pass 90 °
Final Pass 70 °
Overhaul
Exhaust Manifold to Cylinder Head Retaining Bolts
First Pass 15 Nm (11 lb ft.)
Final Pass 20 Nm (15 lb ft.)
Service and Repair
Intake Manifold to Cylinder Head Retaining Bolts
First Pass 5 Nm (44 lb in.)
Final Pass 10 Nm (89 lb in.)
Overhaul

*1 Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface

*2 Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes 2 Runner Port Openings

*3 Measured from the Spring Seat Surface to the Top of the Guide