System Specifications

CYLINDER HEAD SET BOLT





Using vernier calipers, measure the length of the cylinder head bolts from the seat to the end.
Standard length: 146.8 to 148.2 mm (5.780 to 5.835 in.)
Maximum length: 148.5 mm (5.846 in.)
If the bolt length is greater than maximum, replace the cylinder head set bolt.

CYLINDER HEAD FLATNESS





Using a precision straight edge and a feeler gauge, measure the surface that is in contact with the cylinder block and the manifolds for warpage.
Maximum warpage:
Cylinder block side: 0.05 mm (0.0020 in.)
Intake manifold side: 0.10 mm (0.0039 in.)
Exhaust manifold side: 0.10 mm (0.0039 in.)
If the warpage is greater than maximum, replace the cylinder head.


CYLINDER HEAD SUB-ASSEMBLY

HINT: The cylinder head bolts should be tightened in 2 successive steps.

Apply a light coat of engine oil to the threads of the cylinder head bolts.





Using several steps, uniformly install and tighten the 10 cylinder head bolts and plate washers with a bi-hexagon wrench 10 mm in the sequence shown in the illustration (Procedure "A").
Torque: 49 Nm (500 kgf-cm, 36 ft-lbf)





Mark the front of the cylinder head bolts with paint.
Retighten the cylinder head bolts 90° in the same sequence as procedure "A".
Check that the paint mark of each bolt is at a 90° angle to the front.


CAMSHAFT
Apply a light coat of engine oil to the camshaft journals.





Place the 2 camshafts on the cylinder head as shown in the illustration.





Examine the front marks and numbers and check that the sequence order is as shown in the illustration. Then tighten the bolts.
Bearing cap No. 1 - Torque: 23 Nm (235 kgf-cm, 17 ft-lbf)
Bearing cap No. 3 - Torque: 13 Nm (133 kgf-cm, 10 ft-lbf)

Bearing cap No. 1 is used for bearings numbered from 9 to 11 in the illustration.
Bearing cap No. 3 is used for bearings numbered from 1 to 8 in the illustration.


EXHAUST MANIFOLD





Install a new gasket and the exhaust manifold with the 5 nuts.
Torque: 37 Nm (377 kgf-cm, 27 ft-lbf)


INTAKE MANIFOLD





Install the intake manifold and throttle body with the 2 brackets, 4 bolts and 2 nuts.
Torque: 30 Nm (306 kgf-cm, 22 ft-lbf)