Cylinder Head Assembly: Specifications

Cylinder Head:

Cylinder Head

Cylinder Head Surface Variation
Standard dimension less than 0.05 mm (0.002 inch.)
Service Limit 0.2 mm (0.008 inch.)
Grinding Limit Maximum of 0.2 mm (0.008 inch.) is permitted.

CAUTION: 0.20 mm (0.008 in.) MAX is a combined total dimension of the stock removal limit from cylinder head and block top surface (Deck) together.

Camshaft Sprocket-Bolt 54 Nm (40 ft. lbs.)

Exhaust Manifold-Bolts 23 Nm (200 in. lbs.)





Intake Manifold - Lower-Bolts 23 Nm (200 in. lbs.)
Intake Manifold - Lower Gasket Retainer-Bolts 12 Nm (105 in. lbs.)





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





Cylinder Head - Reusability
The cylinder head bolts are torqued using the torque yield method, they should be examined BEFORE reuse. If the threads are necked down, the bolts must be replaced.
Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale the bolt should be replaced.





Cylinder Head Bolt

Step 1: Bolts 1 - 8 to 61 Nm (45 ft. lbs.)
Step 2: Bolts 1 - 8 to 88 Nm (65 ft. lbs.)
Step 3: Bolts 1 - 8 (again) to 88 Nm (65 ft. lbs.)
Step 4: Bolts 1 - 8 turn an additional 1/4 Turn.
NOTE: Bolt torque after 1/4 turn should be over 122 Nm (90 ft. lbs.)
If not, replace the bolt.