Cylinder Head

Head Bolt Torque Sequence






Cylinder Head Bolt Identification


Tighten the engine cylinder head bolts in sequence according to the following procedure.

CAUTION: During the final tightening sequence, bolt No. 11 will be tightened to a lower torque than the rest of the bolts. DO NOT overtighten bolt No. 11.

a. Tighten all bolts in sequence (1 through 14) to 30 Nm (22 ft. lbs.) torque.
b. Tighten all bolts in sequence (1 through 14) to 61 Nm (45 ft. lbs.) torque.
c. Check all bolts to verify they are set to 61 Nm (45 ft. lbs.) torque.
d. Tighten bolts in sequence:
- Bolts 1 through 10 to 149 Nm (110 ft. lbs.) torque.
- Bolt 11 to 135 Nm (100 ft. lbs.) torque.
- Bolts 12 through 14 to 149 Nm (110 ft. lbs.) torque.
- All bolts are 12 point drives for rocker cover clearance
e. Check all bolts in sequence to verify the correct torque.
f. If not already done, clean and mark each bolt with a dab of paint after tightening. Should you encounter bolts which were painted in an earlier service operation, replace them.