Cylinder Head Assembly: Specifications

FLATNESS OF GASKET SURFACE:
Standard 0.03 mm (0.0012 inch)
Wear Limit 0.2 mm (0.008 inch)

GENERAL:
*Grinding Limit of Gasket Surface 0.2 mm (0.0079 inch)
Overall Height 119.9 - 120.1 mm (4.72 - 4.73 inch)

*NOTE: Includes/Combined With Cylinder Block Grinding.

VALVE GUIDE HOLE:
0.05 Oversize 11.05 - 11.07 mm (0.4350 - 0.4358 inch)
0.25 Oversize 11.25 - 11.27 mm (0.4429 - 0.4437 inch)
0.50 Oversize 11.50 - 11.52 mm (0.4528 - 0.4535 inch)

INTAKE VALVE SEAT RING HOLE:
0.30 Oversize 34.30 - 34.33 mm (1.3504 - 1.3516 inch)
0.60 Oversize 34.60 - 34.63 mm (1.3622 - 1.3634 inch)

EXHAUST VALVE SEAT RING HOLE:
0.30 Oversize 31.80 - 31.83 mm (1.2520 - 1.2531 inch)
0.60 Oversize 32.10 - 32.13 mm (1.2638 - 1.2650 inch)





CYLINDER HEAD TORQUE/SEQUENCE:
Use the special tool and a torque wrench to tighten the bolts to 103 - 113 Nm (76 - 83 ft. lbs.) of torque in the order shown in the illustration. Tightening should be done in two or three steps.

CAUTION: Install the head bolt washers with shear droop upward as shown in the illustration.

INTAKE MANIFOLD TORQUE:

General Specifications
Manifold Flatness
Intake 0.10 mm (0.004 inch)
Service Limit 0.2 mm (0.008 inch)

Torque Specifications
Plenum Bolt 18 Nm (160 inch lbs.)
Plenum Support
Bolt M8 18 Nm (160 inch lbs.)
Bolt M10 36 Nm (26.5 ft. lbs.)
Intake Manifold Nut 21 Nm (186 inch lbs.)
Intake Manifold Lower Fasteners 21 Nm (185 inch lbs.)
Intake Manifold Upper Plenum Bolts 18 Nm (160 inch lbs.)

EXHAUST MANIFOLD TORQUE:

Exhaust Manifold Mounting Nuts/Bolts 33 ft. lbs.
Exhaust Manifold Flange Fasteners 24 ft. lbs.
EGR Tube to Exhaust Manifold 97 in. lbs.