Cylinder Head Assembly

Cylinder Head No.1 Bolts

Tighten cylinder head No.1 bolts to 20 Nm (2.0 kgf-m, 15.0 lbf-ft) in numerical order ("1" - "10") evenly and gradually.

NOTE:
Use 12-point socket wrench to cylinder head No.1 bolts.

In the same manner as in Step c), retighten them to 40 Nm (4.1 kgf-m, 29.5 lbf-ft).
In the same manner as Step c), retighten them to 60°.
In the same manner as Step c), retighten them to 80°.

Cylinder head No.1 bolt (a)
Tightening torque (20 Nm -> 40 Nm -> +60� -> +80� (2.0 kgf-m -> 4.1 kgf-m -> +60� -> +80�, 15.0 lbf-ft -> 29.5 lbf-ft -> +60� ->+80�))

Cylinder Head No.2 Bolt (2)

Cylinder head No.2 bolt (b)
Tightening torque 25 Nm (2.5 kgf-m, 18.5 lbf-ft)








Cylinder Head No.1 Bolt Inspection

NOTE:
If they are reused, check thread diameter of cylinder head No.1 bolt (1) for deformation as follows and replace it with new one if thread diameter difference exceeds its limit.

Cylinder head No.1 bolt diameter difference (deformation)
Limit (A - B): 0.25 mm (0.0098 in.)


















Distortion of mating surface of cylinder head and cylinder head gasket
Limit 0.03 mm (0.0011 in.)

Distortion of seating face of intake manifold and exhaust manifold on cylinder head
Limit 0.05 mm (0.0019 in.)




Camshaft housing bolt

Install camshaft housing No.1 (1).
Install camshaft housing bolts, and tighten them by hand.
Tighten camshaft housing bolts in numerical order ("1" - "21") evenly and gradually.


Tightening torque 11 Nm (1.1 kgf-m, 8.5 lbf-ft)







Exhaust Manifold Torque & Sequence Specifications

Camshaft Gear/Sprocket Torque Specifications