Cylinder Head Assembly
GENERAL SPECIFICATIONS
Cylinder Head
a Valve seat angle - intake 30° and exhaust 37.5°.
b Gasket surface finish - 63-125 in.
Rocker Arm Shaft, Push Rods and Valve Tappets
a Service limit - 0.005.
b Time required for plunger to move 0.125 in. under 50 lbs. with test fluid at room temperature.
c Measured at valve tip to rocker arm.
Valve Springs
a Service Limit - ±8lbs.
Valves
a Service clearance - 0.0055.
TIGHTENING SPECIFICATIONS
LH Cylinder Head
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 valve reading of the bolts.
Lightly lubricate the cylinder head retaining bolt threads and flanges with clean engine oil and 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 ft. lbs.).
- Stage 2: Using the first sequence, tighten the bolts to 115 Nm (85 ft. lbs.).
- Stage 3: Using the second sequence, tighten the bolts to 129 Nm (95 ft. lbs.).
RH Cylinder Head
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 valve reading of the bolts.
Lightly lubricate the cylinder head retaining bolt threads and flanges with clean engine oil and 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 ft. lbs.).
- Stage 2: Using the first sequence, tighten the bolts to 115 Nm (85 ft. lbs.).
- Stage 3: Using the second sequence, tighten the bolts to 129 Nm (95 ft. lbs.).