Cylinder Head Assembly: Specifications

Cylinder head and valve train
Cylinder head gasket surface flatness
per 51 mm (2 inch) 0.05 mm (0.002 inch)
per total surface area 0.10 mm (0.004 inch)
Cylinder head thickness 95 mm (3.74 inch)
Intake manifold warpage - between ports 0.13 mm (0.005 inch)
Intake manifold warpage - total 0.25 mm (0.10 inch)
Exhaust manifold flange bolts (a) 38 Nm (28 ft. lbs.)
Intake manifold flange bolts 11 Nm (8 ft. lbs.)
Intake manifold heat shield 11 Nm (8 ft. lbs.)
Valve Guide Bore Diameter (a)
Intake 0.3141-0.3151 inch
Exhaust 0.3141-0.3151 inch
Valve Seat Width
Intake 1.651-2.413 mm (0.065-0.095 inch)
Exhaust 1.651-2.413 mm (0.065-0.095 inch)
Valve Seat Runout TIR - Maximum 0.05 mm (0.002 inch)
Valve Arrangement Front to Rear
LH I-E-I-E-I-E-I-E
RH E-I-E-I-E-I-E-I
Gasket Surface Flatness 0.025 mm (0.001 inch)
Deck to Deck Dimension 129.41-129.67 mm (5.095-5.105 inch)

(a) Maximum 0.3180 inch
(b) Valve seat angle-intake 30° and exhaust 37.5°.

For torque specifications, refer to the service procedure.