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cylinder head and main bearing bolts had a first step torque of 50 to 60 foot-pounds and a second step torque of 80 to 90 foot-pounds each. The rod bearing bolts had a first step torque of 25 to 30 foot-pounds and a second step torque of 30 to 36 foot-pounds. The intake manifold and exhaust had a first step torque of 5 to 7 foot-pounds. The intake manifold had a second step torque of 14 to 21 foot-pounds while the exhaust manifold had a second step torque of 16 to 23 foot-pounds.
Tighten cylinder head bolts to 25 N.m (18 ft. lbs.). Tighten bolts an additional 70 degrees plus 70 degrees plus 30 degrees using angular torque gauge .
2.2L Engine & 2.4L Engines These engines are not equipped
with rocker arms. The camshafts directly actuate the valves.
3.1L Engine & 3.4L Engines When install or connect the check the following: - Pushrods and the rocker arms. Torque the bolts to 24 ft. lbs. (32
Nm).
- Rocker arm cover using a new gasket. Torque the rocker cover bolts
to 89 inch lbs. (10 Nm). - Heater bypass pipe. Torque the screw at the water pump to 106 inch
lbs. (12 Nm), the bolt at the cylinder head corner to 18 ft. lbs. (25
Nm) and the nut to 18 ft. lbs. (25 Nm).
About the INTAKE MANIFOLD... - Intake manifold nuts and bolts and tighten to 89 inch lbs. (10 Nm) - Pushrods and rocker arms. Torque the bolts to 89 inch lbs. (10 Nm)
plus an additional 30 degree turn.
- Lower intake manifold. Apply sealant to the threads of the bolts
and torque the bolts to 115 inch lbs. (13 Nm).
Exploded view of the upper and lower intake-3.1L & 3.4L
engines
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