Torque Specifications

Torque Specifications

a Apply High Temperature Nickel Anti-Seize Lubricant (XL-2) to the threads prior to assembly.
b Refer to procedure.
c Apply Threadlock 262 to bolt threads prior to assembly.
d Apply clean engine oil to the O-ring seal before installing.

Cylinder Head

New Head Bolts Must Be Used

Install the cylinder head retaining bolts finger-tight.
Tighten the head bolts in the following sequence.
1 Tighten bolts 1 through 10 to 88 Nm (65 ft. lbs.).
2 Tighten bolts 1, 3, 5, 7 and 9 to 115 Nm (85 ft. lbs.).
3 Tighten bolts in sequence 1 through 10, clockwise 90°.
4 Tighten bolts in sequence 1 through 10, a second time, clockwise 90°.
5 Tighten bolts in sequence 1 through 10, a third time, clockwise 90°.
6 Tighten bolts 11 through 15 to 24 Nm (18 ft. lbs.).
7 Tighten bolts 11 through 15 to 31 Nm (23 ft. lbs.).

Crankcase Main Bearings
Lower bearings into the lower crankcase.
Install the lower crankcase. Install all 20 lower crankcase main bearing mounting bolts. Tighten the mounting bolts in the following sequence.
1 Tighten bolts to 149 Nm (110 ft. lbs.) in numerical sequence.
2 Tighten bolts again to 176 Nm (130 ft. lbs.) in numerical sequence.
3 Tighten bolts to 231 Nm (170 ft. lbs.) in the numerical sequence.

Install eight M8 x 30 bolts around the outside of the lower crankcase. Tighten bolts to the special torque using the sequence shown.

Connecting rod cap
Install the connecting rod cap and the bolts. Tighten the bolts in the following sequence.
1 Tighten to 45 Nm (33 ft. lbs.).
2 Tighten to 68 Nm (50 ft. lbs.).

Crankshaft pulley
Install the dual generator pulley and bolts.
(dual alternators) 47 Nm (35 ft. lbs.)

Crankshaft vibration damper
^ Tighten the bolts in the sequence shown.
^ Tighten the bolts to 68 Nm (50 ft. lbs.).
^ Tighten the bolts an additional 90 degrees.

Flexplate or Flywheel
In the sequence shown.
^ Install the bolts.
^ Snug all bolts to 5 Nm (44 inch lbs.)
^ Tighten all bolts to 94 Nm (69 ft. lbs.)

Oil Pump 8 Nm (71 in.lb.)

Exhaust Manifold LH
Install the LH manifold and bolts.
Tighten in the sequence shown.
Tighten all bolts to 38 Nm (28 ft. lbs.).

Exhaust Manifold RH
Install the RH manifold and bolts.
Tighten in the sequence shown.
Tighten all bolts to 38 Nm (28 ft. lbs.)

Coolant pump 23 Nm (17 ft. lbs.)

Late build

Intake Manifold
Install the intake manifold and bolts and tighten in the following sequence.
In the sequence shown.
1 Loosely install bolts 1-8.
2 Tighten bolts 9-16 to 11 Nm (8 ft. lbs.).
3 Tighten all bolts to 11 Nm (8 ft. lbs.).

Early build