Cylinder Head Assembly

Cylinder Head:

Cylinder Head

Camshaft
Non - Oiled Sprocket Bolt 122 Nm 90 (ft. Lbs.)





Bearing Cap Bolts 11 Nm (100 in. lbs.)

Exhaust Manifold-Bolts 25 Nm (18 ft. lbs.)
Starting at the center arm and working outward





Intake Manifold-Bolts 12 Nm (105 in. lbs.)





Cylinder Head Re-Usability

NOTE: 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 (2) the bolts should be replaced.

Necking can be checked by holding a straight edge against the threads. If all the threads do not contact the scale, the bolt should be replaced.

CAUTION: When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper because the surfaces could be cut or ground. Use only a wooden or plastic scraper (1).





Cylinder Head Bolt

Step 1: Tighten bolts 1-8, 27 Nm (20 ft. lbs.).
Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.),
by repeating step 1 without loosening the bolts.
Tighten bolts 9 thru 12 to 14 Nm (10 ft. lbs.).
Step 3: Tighten bolts 1-8, 90�.
Step 4: Tighten bolts 1-8, 90�, again.
Tighten bolts 9-12, 26 Nm (19 ft. lbs.)

Cylinder Head Surface Variation
Inspect the cylinder head for out-of-flatness, using a straightedge and a feeler gauge.
If measurements exceed 0.0508 mm (0.002 in.) replace the cylinder head.