Engine Torque Specifications

TORQUE






CYLINDER HEAD BOLTS





NOTE: Ensure cylinder head bolt holes in the block are clean, dry (free of residual oil or coolant), and threads are not damaged.

NOTE: The Cylinder head bolts should be examined BEFORE reuse. If the threads are necked down, the bolts should be replaced.

Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale (2), the bolt should be replaced.





CAUTION: This engine was built with 2 different style cylinder head bolts. Each style bolt requires a different torque value. The bolts can be identified by the short bolt head (1) and the long bolt head (2).

- Measure the bolt head from the washer to the top of the bolt head. The short bolt head (1) measures 8 mm (5/16") and the long bolt head (2) measures 13 mm (1/2").
- Identify whether your engine has the short head design (1) or the long head design (2).




NOTE: The front two cylinder head bolts do not have captured washers. The washers must be installed with the bevel up towards the bolt head.

If your bolt has the short head (1), use the following torque specifications:
- First: All to 30 Nm (25 ft. lbs.)
- Second: All to 61 Nm (45 ft. lbs.)
- Third: All to 61 Nm (45 ft. lbs.)
- Fourth: All an additional 90°

CAUTION: Do not use a torque wrench for the Fourth step.

If your bolt has the long head (2), use the following torque specifications:
- First: All to 30 Nm (25 ft. lbs.)
- Second: All to 73 Nm (54 ft. lbs.)
- Third: All to 73 Nm (54 ft. lbs.)
- Fourth: All an additional 90°

CAUTION: Do not use a torque wrench for the Fourth step.

INTAKE MANIFOLD





Intake Manifold Bolts 25 Nm (220 In.Lbs.)

CAMSHAFT BEARING CAPS

CAUTION: Install the front intake and exhaust camshaft bearing cap last. Ensure that the dowels are seated and follow torque sequence or damage to engine could result.

NOTE: If the front camshaft bearing cap is broken, the cylinder head MUST be replaced.





1. Install intake and exhaust camshaft bearing caps and slowly tighten bolts to 9.5 Nm (85 in. lbs.) in the sequence shown.




NOTE: Verify that the exhaust bearing shells are correctly installed, and the dowels are seated in the head, prior to torquing bolts.

2. Install the front intake and exhaust bearing cap and tighten bolts to 25 Nm (18 ft. lbs.) in the sequence shown.

MAIN BEARING CAPS

CAUTION: There are different sets main bolts supplied with this engine. Each bolt set has a different torque value and engine damage could result if bolts are not torqued correctly. The bolts are not interchangeable.





If your bolt heads look like this (1,2), Go to step 1. If your bolt heads do not look like this (1,2), Go to step 2.




CAUTION: Before tightening bolts, you must identify the bolt head to obtain the correct torque value. Failure to identify the bolts correctly, could result in improperly tightened bolts which could result in engine damage.

1. Tighten bolts using a three step method, in the sequence shown.
- Tighten bolts to 15 Nm (11 ft. lbs.)
- Tighten bolts to 27 Nm (20 ft. lbs.)
- Rotate an additional 45°.

2. Tighten bolts using a three step method, in the sequence shown.
- Tighten bolts to 15 Nm (11 ft. lbs.)
- Tighten bolts to 45 Nm (33 ft. lbs.)
- Rotate an additional 45°.

ROD BEARING CAPS

Tighten the connecting rod bolts using the 2 step torque-turn method. Tighten according to the following values:

CAUTION: Do not use a torque wrench for the second step.

- Tighten the bolts to 20 Nm (15 ft. lbs.).
- Tighten the connecting rod bolts an additional 90°.

OIL PUMP





NOTE: Use a three step procedure when torquing BSM mounting bolts.

- Tighten BSM mounting bolts to 15 Nm (11 ft. lbs.) as shown.
- Tighten BSM mounting bolts to 29 Nm (22 ft. lbs.) as shown.
- Rotate bolts an additional 90° as shown.

EXHAUST MANIFOLD





Exhaust Manifold Bolts 34 Nm (25 Ft.Lbs.)

WATER PUMP

Water Pump Bolts 24 Nm (212 In.Lbs)