Cylinder Head Assembly

CYLINDER HEAD





NOTE: Before installing the cylinder head bolts, lubricate the threads with clean engine oil.

Install the cylinder head bolts and tighten in the sequence shown.





If your bolt has the short head (1), use the following torque specifications:

First: All to 30 Nm (25 ft. lbs.)
Second: All to 61 Nm (45 ft. lbs.)
Third: All to 61 Nm (45 ft. lbs.)
Fourth: All an additional 90°

CAUTION: Do not use a torque wrench for the Fourth step.

If your bolt has the long head (2), use the following torque specifications:

First: All to 30 Nm (25 ft. lbs.)
Second: All to 73 Nm (54 ft. lbs.)
Third: All to 73 Nm (54 ft. lbs.)
Fourth: All an additional 90°

CAUTION: Do not use a torque wrench for the Fourth step.

HEAD BOLT REUSE/REPLACE

The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced.

SURFACE VARIATION

Deck Surface 0.050 mm (0.002 in.)
Head to Manifolds 0.15 mm per 300 mm (0.006 in. per foot)
Warpage 0.1 mm (0.004 in.)

CAMSHAFT BEARING CAP









Camshaft Bearing Cap-Bolts
M6 Bolts 12 Nm (106 in. lbs)
M8 Bolts 30 Nm (22 ft. lbs)

INTAKE MANIFOLD

Intake Manifold-Bolts Specifications

EXHAUST MANIFOLD

Exhaust Manifold-Bolts Specifications