Cylinder Head Assembly: Specifications

CYLINDER HEAD (for Bank 1)
The cylinder head bolts are tightened in 3 progressive steps.

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

Step 2:
Mark the cylinder head bolt head with paint as shown in the illustration.
Tighten the cylinder head bolts another 90° in the sequence shown in step 1.

Step 3:
Tighten the cylinder head bolts by an additional 90° in the sequence shown in step 1.
Check that the painting marks are now facing rearward.

CYLINDER HEAD
Warpage
Cylinder head lower side
Standard 0.05 mm (0.0020 in.)
Intake side
Standard 0.08 mm (0.0031 in.)
Exhaust side
Standard 0.05 mm (0.0020 in.)
Maximum 0.10 mm (0.0039 in.)
Intake valve
Valve stem diameter
Standard 5.470 to 5.485 mm (0.2154 to 0.2159 in.)
Margin thickness
Standard 1.25 mm (0.0492 in.)
Minimum 0.50 mm (0.0197 in.)
Overall length
Standard 105.85 mm (4.1673 in.)
Minimum 105.35 mm (4.1476 in.
Width
Standard 1.1 to 1.5 mm (0.043 to 0.059 in.)
Exhaust
Valve stem diameter
Standard 5.465 to 5.480 mm (0.2152 to 0.2157 in.)
Margin thickness
Standard 1.4 mm (0.0551 in.)
Minimum 0.50 mm (0.0197 in.)
Overall length
Standard 110.40 mm (4.3465 in.)
Minimum 109.90 mm (4.3268 in.)
Width
Standard 1.1 to 1.5 mm (0.043 to 0.059 in.)
Compression spring
Free length
Standard 51.70 mm (2.0354 in.)
Deviation
Maximum 1.0 mm (0.0394 in.)
Angle (reference)
Maximum 2°
Valve guide bush
Bush inside diameter
Standard 5.51 to 5.53 mm (0.2169 to 0.2177 in.)
Valve guide bush oil clearance
Intake
Standard 0.025 to 0.060 mm (0.0010 to 0.0024 in.)
Maximum 0.08 mm (0.0031 in.)
Exhaust
Standard 0.030 to 0.065 mm (0.0012 to 0.0026 in.)
Maximum 0.10 mm (0.0039 in.)
Camshaft thrust clearance
Standard 0.08 to 0.13 mm (0.0031 to 0.0051 in.)
Maximum 0.15 mm (0.006 in.)
Cylinder bore diameter
Standard 10.285 to 10.306 mm (0.4049 to 0.4057 in.)
Valve guide bush bore diameter
STD 10.285 to 10.306 mm (0.4049 to 0.4057 in.)
O/S 0.05 10.335 to 10.356 mm (0.4069 to 0.4077 in.)
Protrusion height
Standard 14.3 to 14.7 mm (0.563 to 0.579 in.)

CAMSHAFT BEARING CAP (for Bank 1)

Install the 12 bolts in the order shown in the illustration.
Torque 10 N*m (102 kgf*cm, 7 ft.*lbf) for bolt A
Torque 30 N*m (306 kgf*cm, 22 ft.*lbf) for except bolt A

Tighten the 8 bolts in the order shown in the illustration.
Torque 16 N*m (163 kgf*cm, 12 ft.*lbf)

CAMSHAFT BEARING CAP (for Bank 2)

Install the 12 bolts in the order shown in the illustration.
Torque 10 N*m (102 kgf*cm, 7 ft.*lbf) for bolt A
Torque 30 N*m (306 kgf*cm, 22 ft.*lbf) for except bolt A

Tighten the 8 bolts in the order shown in the illustration.
Torque 16 N*m (163 kgf*cm, 12 ft.*lbf)

EXHAUST MANIFOLD LH

Install the exhaust manifold LH, and install 8 new nuts in the order shown in the illustration.
Torque 21 N*m (214 kgf*cm, 15 ft.*lbf)

EXHAUST MANIFOLD RH

Install the exhaust manifold RH, and install 8 new nuts in the order shown in the illustration.
Torque 21 N*m (214 kgf*cm, 15 ft.*lbf)