Cylinder Head Assembly

The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced (Fig. 24).





Cylinder Head Bolts
Right*
Left*
- Step 1 61 Nm (45 ft. lbs.)
- Step 2 88 Nm (65 ft. lbs.)
- Step 3 88 Nm (65 ft. lbs.)
- Step 4 +1/4 turn (+1/4 turn)
*Refer to procedure for tightening sequence. Right Cylinder Head Left Cylinder Head
Cylinder Head Cover-Bolts 12 Nm (105 inch lbs.)
Left & Right Exhaust Manifold
- Tighten bolts starting at the center working outward to 23 Nm (200 inch lbs.) (Fig. 161).
Exhaust Manifold Heat Shield-Bolts 12 N (105 inch lbs.)
Flex plate to Crankshaft 95 Nm (70 ft. lbs.)
Flex plate to Torque Converter 75 Nm (55 ft. lbs.)





Intake Manifold - Lower 28 Nm (250 inch lbs.)





Intake Manifold - Upper 12 Nm (105 inch lbs.)Camshaft Sprocket Bolt
Camshaft Bolts
Right Side 102 Nm +1/4 turn(75 ft. lbs. +1/4 turn)
Left Side 115 Nm +1/4 Turn (85 ft. lbs. +1/4 Turn)
Camshaft Thrust Plate-Bolts 28 Nm (250 inch lbs.)
Camshaft Sprocket Bolt-Right Side 102 Nm +1/4 turn(75 ft. lbs. +1/4 turn)
Camshaft Sprocket Bolt-Left Side 115 Nm +1/4 Turn (85 ft. lbs. +1/4 Turn)
CYLINDER HEAD
Gasket Thickness (Compressed) 1.78 mm (0.059 inch)
Valve Seat Angle (From Horizontal) 45 - 45.5°
Valve Seat Runout (MAX) 0.051 mm (0.002 inch)
Valve Seat Width-Intake 0.8 - 1.2 mm (0.031 - 0.067 inch)
Valve Seat Width-Exhaust 1.3 - 1.7 mm (0.05 - 0.067 inch)
Guide Bore Diameter (Std.) 6.975 - 7.00 mm (0.2746 - 0.2756 inch)
Valve Guide Height 9.5 - 10.5 mm (0.3740 - 0.4134 inch)
Measured from cylinder head surface
CAMSHAFT
Bore Diameter 3.038 - 43.059 mm (1.6944 - 1.6953 inch)
Diametrical Clearance 0.078 - 0.12 mm (0.003 - 0.0047 inch)
Diametrical Clearance (MAX) 0.15 mm (0.0059 inch)
Bearing Journal Diameter 42.939 - 42.960 mm (1.6905 - 1.6913 inch)
End Play 0.03 - 0.035 mm (0.001 - 0.014 inch)