Cylinder Head Assembly

Cylinder Head
a Valve seat angle - intake 30° and exhaust 37.5°
b Gasket surface finish - 63-125 in.





Cylinder Block
a Maximum out-of-round 0.013 mm (0.0005 in.); maximum taper 0.013 mm (0.0005 in.); cylinder bore surface finish -- RMS 15-30.
b With bearing caps tightened in place.


Cylinder Head Tightening Procedure

CAUTION: Do not use too much engine oil on the threads of the cylinder head bolts, or damage to the threads and poor sealing can result. Do not use anti-seize compounds, grease or any other lubricants except engine oil on the cylinder head bolt threads because they will affect the true torque value reading of the bolts.





Lightly lubricate the cylinder head retaining bolt threads and flanges with clean engine oil. Install the cylinder head retaining bolts.
- Tighten the bolts in the sequences shown in three stages.
- Stage 1: Using the first sequence, tighten the bolts to 88 Nm (65 lb-ft).
- Stage 2: Using the first sequence, tighten the bolts to 115 Nm (85 lb-ft).
Stage 3: Using the second sequence, tighten the bolts to 129 Nm (95 lb-ft).