Cylinder Head

Cylinder Head








4. Tighten cylinder head bolts (1) to (10) in numerical order as shown in 5 steps.
Cylinder head bolts
Step 1: 29.4 Nm (3.0 kg-m, 22 ft. lbs.)
Step 2: 58,8 Nm (6.0 kg-m, 43 ft. lbs.)
Step 3: 0 Nm (0 kg-m, 0 ft. lbs.) (loosen)
Step 4: 27.4 - 31.4 Nm (2.8 - 3.2 kg-m, 21 - 23 ft. lbs.)
Step 5: 50° - 55° (target: 50°) clockwise





CAUTION: Check and confirm the tightening angle by using angle wrench.





5. Tighten cylinder head auxiliary bolts (11) to (14) in numerical order shown.
Cylinder head auxiliary bolts: 6.28 - 8.34 Nm (0.64 - 0.85 kg-m, 56 - 73 inch lbs.)
- Verify shank length under bolt head. [Bolt 11: 20 mm (0.79 inch), bolts 12 - 14: 25 mm (0.98 inch)]

CYLINDER HEAD DISTORTION
Clean surface of cylinder head.





Use a reliable straightedge and feeler gauge to check the flatness of cylinder head mating surface.
Check along six positions as shown.
Head surface flatness
Standard Less than 0.03 mm (0.0012 inch)
Limit 0.1 mm (0.004 inch)
If beyond the specified limit, replace or resurface it.
Resurfacing limit:
The limit for cylinder head resurfacing is determined by the amount of cylinder block resurfacing.
Amount of cylinder head resurfacing is "A".
Amount of cylinder block resurfacing is "B".
The maximum limit is as follows: A + B = 0.2 mm (0.008 inch)
After resurfacing cylinder head, check that camshaft rotates freely by hand. If resistance is felt, replace cylinder head.
Nominal cylinder head height 117.8 - 118.0 mm (4.638 - 4.646 inch)