Cylinder Head Assembly: Specifications

Cylinder head stud bolt
for stud bolt A, B and C 10 Nm (102 kgf-cm, 7 ft.lbf)
for stud bolt D 4.0 Nm (41 kgf-cm, 35 ft.lbf)

Cylinder head set bolt
Standard 10.85 to 11.00 mm (0.4272 to 0.4331 in.)
Minimum 10.70 mm (0.4213 in.)

Cylinder head sub-assembly
Standard warpage
Cylinder head lower side 0.05 mm (0.0020 in.)
Intake side 0.08 mm (0.0031 in.)
Exhaust side 0.08 mm (0.0031 in.)
Maximum warpage 0.10 mm (0.0039 in)

Cylinder head sub-assembly x Cylinder block (for bank 1 and 2)
1st 36 Nm (367 kgf-cm, 27 ft.lbf)
2nd Turn 90° Nm (Turn 90° kgf-cm, Turn 90° ft.lbf)
3rd Turn 90° Nm (Turn 90° kgf-cm, Turn 90° ft.lbf)
for 14 mm head 30 Nm (306 kgf-cm, 22 ft.lbf)

Camshaft bearing cap x Cylinder head (for bank 1 and 2) 10 Nm (102 kgf-cm, 7 ft.lbf)

Camshaft timing gear x Camshaft 100 Nm (1020 kgf-cm, 74 ft.lbf)

Exhaust manifold LH and RH x Cylinder head 21 Nm (214 kgf-cm, 15 ft.lbf)

Cylinder Head

Bank 1:

Bank 2:

Place the cylinder head gasket on the cylinder block surface with the Lot No. stamp facing upward.

HINT: The cylinder head bolts are tightened in 3 progressive steps.

Bank 1:

Bank 2:

Step 1

(1) Using a 10 mm bi-hexagon wrench, install and uniformly tighten the 8 cylinder head bolts with the plate washers in several steps, in the sequence shown in the illustration.
Torque: 36 Nm (367 kgf-cm, 27 ft-lbf)





Step 2

(1) Mark each cylinder head bolt head with paint as shown in the illustration.

(2) Tighten the cylinder head bolts another 90° in the sequence shown in step 1.

Step 3

(1) Tighten the cylinder head bolts by an additional 90° in the sequence shown in step 1.

(2) Check that the painted marks are now facing rearward.

Bank 2:

Uniformly install the 2 bolts in the sequence shown in the illustration.
Torque: 30 Nm (306 kgf-cm, 22 ft-lbf)