Cylinder Head Assembly: Specifications

CYLINDER HEAD
Install new cylinder head bolts





Tighten cylinder head bolts in several steps to the specified torque according to the assembly order shown.
Specified torque 35 ± 2 Nm (26 ± 1 ft-lb)





Put a paint mark on all of cylinder head bolt heads and cylinder head.

CAUTION
^ When the tightening angle is smaller than the specified tightening angle, the appropriate tightening capacity cannot be secured.
^ When the tightening angle is larger than the specified tightening angle, remove the bolt to start from the beginning again according to the procedure.

Tighten the cylinder head 90° according to the tightening order.
Tighten it further 90° and make sure that the paint mark on the cylinder head bolt is in a straight line with that on the cylinder head.

Distortion of cylinder head bottom
Standard Value Within 0.05 mm (0.002 in)
Limit 0.2 mm (0.01 in)
Grinding limit of cylinder head bottom
Limit 0.2 mm (0.01 in)
Overall height of cylinder head
Standard Value 128.5 mm (5.06 in)

INTAKE MANIFOLD
Intake manifold stay bolt 23 ± 6 Nm (17 ± 4 ft-lb)
Intake manifold nut 23 ± 6 Nm (17 ± 4 ft-lb)


CAMSHAFT BEARING CAP





Tighten each camshaft bearing cap mounting bolt to the specified torque in the order of number shown in the figure in two or three steps.
Specified torque 12 ± 1 Nm (106 ± 8 in-lb)





Tighten each front camshaft bearing cap mounting bolt to the temporarily torque of 17 ± 3 Nm (14 ± 2 ft-lb) in the order shown 1).

Tighten each front camshaft bearing cap mounting bolt to the specified torque in the order shown 2).
Specified torque 30 ± 2 Nm (22 ± 1 ft-lb)

EXHAUST MANIFOLD
Exhaust manifold nut 49 ± 5 Nm (36 ± 3 ft-lb)