Cylinder Head Assembly: Specifications
Cylinder HeadCylinder head set bolt
Standard bolt length 141.3 to 142.7 mm (5.563 to 5.618 inch)
Maximum bolt length 144.2 mm (5.677 inch)
Cylinder head journal bore diameter
Mark 1 40.000 to 40.008 mm (1.5748 to 1.5752 inch)
Mark 2 40.009 to 40.017 mm (1.5752 to 1.5755 inch)
Mark 3 40.018 to 40.025 mm (1.5755 to 1.5758 inch)
Maximum warpage
Cylinder block side 0.05 mm (0.0020 inch)
Intake manifold side 0.08 mm (0.0031 inch)
Exhaust manifold side 0.08 mm (0.0031 inch)
Cylinder Head Bolt
HINT: The cylinder head bolts are tightened in 2 progressive steps.
Apply a light coat of engine oil to the bolt threads and the area beneath the bolt heads that come in contact with the washers.
Install the bolts and plate washers to the cylinder head.
NOTICE: Do not drop the washers into the cylinder head.
Using several steps, uniformly install and tighten the 10 cylinder head set bolts and plate washers with a 10 mm bi-hexagon wrench in the order shown in the illustration.
Torque 70 Nm (714 kgf-cm, 52 ft. lbs.)
Mark the front side of the cylinder head bolt with paint.
Retighten the cylinder head bolts 90° in the sequence shown in the illustration.
Check that the paint mark is now at a 90° angle to the front.
Cylinder Head Set Bolt
Using vernier calipers, measure the length of the head bolts from the seat to the end.
Standard bolt length 141.3 to 142.7 mm (5.563 to 5.618 inch)
Maximum bolt length 144.2 mm (5.677 inch)
If the bolt length is greater than the maximum, replace the cylinder head set bolt.
Intake Manifold
Install the intake manifold with the 5 bolts and 2 nuts.
Torque 30 Nm (305 kgf-cm, 22 ft. lbs.)
Camshaft Bearing Cap
Examine the front marks and numbers, and check that the order is as shown in the illustration. Then install the bearing caps into the cylinder head.
Using several steps, uniformly tighten the 10 bearing cap bolts in the sequence shown in the illustration.
Torque:
No. 1 Bearing cap 30 Nm (301 kgf-cm, 22 ft. lbs.)
No. 3 Bearing cap 9.0 Nm (92 kgf-cm, 80 inch lbs.)
NO. 2 CAMSHAFT
Examine the front marks and numbers, and check that the order is as shown in the illustration. Then install the bearing caps onto the cylinder head.
Using several steps, uniformly tighten the 10 bearing cap bolts in the sequence shown in the illustration.
Torque:
No. 2 Bearing cap 30 Nm (301 kgf-cm, 22 ft. lbs.)
No. 3 Bearing cap 9.0 Nm (92 kgf-cm, 80 inch lbs.)
Camshaft Sprocket
Torque 54 Nm (551 kgf-cm, 40 ft. lbs.)
Exhaust Manifold
EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY
Except for PZEV:
Temporarily tighten the exhaust manifold converter with the 5 nuts.
Tighten the 5 nuts in the sequence shown in the illustration.
Torque 37 Nm (378 kgf-cm, 27 ft. lbs.)
For PZEV:
Temporarily tighten the exhaust manifold converter with the 5 nuts.
Tighten the 5 nuts in the sequence shown in the illustration.
Torque 37 Nm (378 kgf-cm, 27 ft. lbs.)