Cylinder Head Assembly

CYLINDER HEAD





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

NOTE: The cylinder head bolts are tightened using an angle torque procedure, however, the bolts are not a torque-to-yield design.

LEFT
Tighten the bolts in sequence using the following steps and torque values:
^ Step 1: Tighten bolts 1-8 to 27 Nm (20 ft. lbs.).
^ Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts. Tighten bolts 9 thru 12 to 14 Nm (10 ft. lbs.).
^ Step 3: Tighten bolts 1-8 to 90°.
^ Step 4: Tighten bolts 1-8 to 90°, again. Tighten bolts 9-12, 26 Nm (19 ft. lbs.)


RIGHT
Tighten the bolts in sequence using the following steps and torque values:
^ Step 1: Tighten bolts 1-8, 27 Nm (20 ft. lbs.).
^ Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts. Tighten bolts 9 thru 12 to 14 Nm (10 ft. lbs.).
^ Step 3: Tighten bolts 1-8, 90°.
^ Step 4: Tighten bolts 1-8, 90°, again. Tighten bolts 9-12, 26 Nm (19 ft. lbs.)

CYLINDER HEAD





INTAKE MANIFOLD





Install the intake manifold retaining bolts and tighten in sequence shown 12 Nm (105 in. lbs.).


CAMSHAFT BEARING CAP
Left





Install the camshaft bearing caps, hand tighten the retaining bolts.

NOTE: Caps should be installed so that the stamped numbers on the caps are in numerical order, (1 through 4) from the front to the rear of the engine. All caps should be installed so that the stamped arrows on the caps point toward the front of the engine.

Working in 1/2 turn increments, tighten the bearing cap retaining bolts starting with the middle cap working outward.
Tighten the camshaft bearing cap retaining bolts 11 Nm (100 in. lbs.).

Right





Install the camshaft bearing caps, hand tighten the retaining bolts.

NOTE: Caps should be installed so that the stamped numbers on the caps are in numerical order (1 thru 4) from the front to the rear of the engine. All caps should be installed so that the stamped arrows on the caps point toward the front of the engine.

Working in 1/2 turn increments, tighten the bearing cap retaining bolts starting with the middle cap working outward as shown.
Torque the camshaft bearing cap retaining bolts 11 Nm (100 in. lbs.).

EXHAUST MANIFOLD
Starting at the center arm and working outward, tighten the bolts and nuts 25 Nm (18 ft. lbs.).