Cylinder Head Assembly: Specifications

SURFACE VARIATION - HEAD-TO-BLOCK

Overall Flatness End To End (max) 0.305 mm (0.012 in.)
Overall Flatness Side To Side (max) 0.076 mm (0.003 in.)

HEAD BOLT REUSE/REPLACE

A cylinder head that is cracked between the injector bore and valve seat can be pressure tested and reused if OK; however, if the crack extends into the valve seat insert bore, the cylinder head must be replaced.

CYLINDER HEAD TORQUE & SEQUENCE





Step 1 70 Nm (52 ft.lbs.)
Step 2 Back off 360 degrees
Step 3 105 Nm(77 ft.lbs.)
Step 4 Verify 105 Nm (77 ft.lbs.)
Step 5 Rotate All Bolts 1/4 Turn

INTAKE MANIFOLD TORQUE

Intake Manifold Bolts 24 Nm (18 ft.lbs.)

EXHAUST MANIFOLD TORQUE & SEQUENCE

Starting from the center and moving in a pattern outward, tighten the exhaust manifold bolts to 43 Nm (32 ft. lbs.)