Tightening Torque & Sequence

TORQUE





CYLINDER HEAD





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).

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.

HEAD BOLT REUSE/REPLACE

Check cylinder head bolts for necking by holding a scale or straight edge against the threads. If all the threads do not contact the scale (2) the bolt must be replaced.





INTAKE MANIFOLD





CAMSHAFT BEARING CAP









MAIN BEARING CAP





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.





If your bolt heads look like this (1,2), then use the following specification

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

If your bolt heads do not look like this (1,2), then use the following specification

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

Drive Plate





Drive Plate-to-crankshaft Bolts 95 Nm (70 ft.lbs.)

OIL PUMP [Balance Shaft Module (BSM)]






CAUTION: There are two different Balance Shaft Module (BSM) to engine block bolts used. 180 mm bolts with a lock-patch on the threads or 185 mm bolts without lock-patch. Do not reuse the 180 mm bolts. Always discard 180 mm bolts after removing. Failure to replace these bolts can result in engine damage. The 185 mm bolts are reusable. Install the same length bolts that were removed and use either four new 180 mm bolts or four 185 mm bolts.










The 185 mm (7.283 in.) length bolts must be checked for stretching. Check the bolts with a straight edge for necking (2). If the bolts are necked down, they must be replaced.

For new 180 mm bolts

Tighten new 180 mm BSM mounting bolts as follows:
a 15 Nm (11 ft. lbs.).
b 33 Nm (24 ft. lbs.) .
c Rotate bolts an additional 90° .

For 185 mm bolts

Tighten 185 mm BSM mounting bolts as follows:
a 15 Nm (11 ft. lbs.).
b 29 Nm (22 ft. lbs.).
c Rotate bolts an additional 90°

EXHAUST MANIFOLD





WATER PUMP

Bolts-Water Pump Mounting 24 Nm (18 ft. lbs)
Bolts-Water Pump Inlet Tube to Block 12 Nm (9 ft. lbs)
Bolts, Water Pump Inlet Tube to water pump housing 24 Nm (18 ft. lbs)
Bolts, Water Pump to Water Pump Adapter 22 Nm (16 ft. lbs)
Bolts, Water Pump Pulley to Water Pump 9 Nm (80 in. lbs)