Tightening Cylinder Heads

NOTE: Tightening Method Based On Rotating Angle

1. Apply a thin coat of Optimoly HT, or equivalent (copper paste) to the stud threads.
2. Fit cylinder heads.

Cylinder Head Tightening (Part 1 Of 2):

Cylinder Head Tightening (Part 2 Of 2):

3. Apply a thin coat of Optimoly HT, or equivalent to the cylinder head nuts and tighten them in two steps according to specified tightening sequence shown in the illustration above:
- 1st step: 15 Nm (11 ft. lbs.)
- 2nd step: turn additionally 90° ± 2°


NOTE: The hexagon head bolts of the knock sensor bridge should only be screwed in manually before tightening the cylinder heads.





4. Tighten knock sensor bridges to a final torque of 9.7 Nm (7 ft. lbs.).