Cylinder Head Assembly: Specifications

Torque Specifications
Camshaft Bearing Cap Bolts 10 Nm (89 inch lbs.)
Cylinder Head Temperature Sensor (CHT) 24 - 28 Nm (18 - 20 ft. lbs.)
Camshaft Position Sensor Bolt 10 Nm (89 inch lbs.)
Exhaust Manifold Nuts 20 Nm (15 ft. lbs.)
Intake Manifold Bolts 25 Nm (18 ft. lbs.)
Throttle Body Adapter To Intake Manifold Bolts 10 Nm (89 inch lbs.)
Cylinder head bolts Service and Repair

General Specifications
Cylinder Head and Valve Train
Combustion Chamber Volume 52 +/- 5 cm
Valve Seats Width-Intake 1.9 - 2.1 mm
Valve Seats Width-Exhaust 1.9 - 2.1 mm
Valve Seats Angle 44.51 - 45.01 degrees
Valve Seats Runout (T.I.R.) Maximum 0.025 mm
Valve Arrangement (Front-to-Rear)
(Left Hand) E-I-E-I-E-I-E-I
(Right Hand) I-E-I-E-I-E-I-E
Valve Stem to Guide Clearance-Intake 0.020 - 0.079 mm (0.00078 - 0.00311 inch)
Valve Step to Guide Clearance-Exhaust 0.045 - 0.104 mm (0.0017 - 0.0040 inch)
Valve Head Diameter-Intake 44.5 mm (1.75 inch)
Valve Head Diameter-Exhaust 36.0 mm (1.41 inch)
Valve Head Diameter-Gauge 42.5 and 34.0 mm (1.67 and 1.33 inch)
Valve Face Runout Limit 0.05 mm (0.002 inch)
Valve Face Angle 45.25 - 45.75 degrees
Valve Stem Diameter (STD) - Intake 6.995 - 6.965 mm (0.275 - 0.2742 inch)
Valve Stem Diameter (STD) - Exhaust 6.970 - 6.940 mm (0.274 - 0.2732 inch)
Valve Springs-Compression Pressure N @ Spec. Length-Intake 720.0 - 800.0 N @ 28.80 mm
Valve Springs - N @ Compression Pressure Spec. Length-Exhaust 720.0 - 800.0 N @ 28.80 mm
Valve Springs-Free Length (Approximate) Intake 53.37 mm +/- 1.0 2.10 inch +/- 0.039
Valve Springs-Free Length (Approximate) Exhaust 53.37 mm +/- 1.0 mm 2.10 +/- 0.039 inch
Valve Springs-Installed Pressure N @ Spec. Length Intake 283.0 - 321.0 N @ 42.56 mm
Valve Spring-Installed Pressure N @ Spec. Length Exhaust 283.0 - 321.0 N @ 42.56 mm
Valve Springs-Installed Pressure N @ Spec. Length Service Limit 10 % Pressure Loss
Valve Springs-Installed Pressure N @ Spec. Length Out of Square Limit 2 degrees
Valve Guide Inner Diameter 7.044 - 7 .015 mm (0.2773 - 0.2761 inch)
Rocker Arm-Ratio 1.80:1
Valve Tappet-Diameter (STD) 16.000 - 15.988 mm (0.66 - 0.629 inch)
Valve Tappet-Clearance to Bore 0.018 - 0.069 mm (0.00071 - 0.00272 inch)
Valve Tappet-Service Limit 0.016 mm (0.00063 inch)
Valve Tappet-Hydraulic Leakdown Rate 5 - 25 seconds
Valve Tappet-Collapsed Valve Tappet Gap - Desired 0.085 - 0.45 mm (0.0335 - 0.0177 inch)

Camshaft
Lobe Lift-Intake 7.11038 mm (0.2799 inch)
Lobe Lift-Exhaust 7.49744 mm (0.2951 inch)
Lobe Lift-Allowable Lobe Lift Loss 0.0 mm (0.000 inch)
Theoretical Valve Lift @ Zero Lash-Intake 13.006 mm (0.512 inch)
Theoretical Valve Lift @ Zero Lash-Exhaust 13.753 mm (0.541 inch)
End Play 0.09 - 0.19 mm (0.0035 - 0.0075 inch)
Journal to Bearing Clearance 0.025 - 0.076 mm (0.00098 - 0.003 inch)
Journal to Bearing Clearance-Service Limit 0.021 mm (0.0048 inch)
Journal Diameter (All) 26.962 - 26.936 mm (1.061 - 1.060 inch)
Journal Diameter (All) Bearing Inside Diameter (All) 27.012 - 26.987 mm (1.063 - 1.0625 inch)
Camshaft Runout 0.05 mm (0.002 inch)

For intake manifold tightening torque and sequence refer to procedure Service and Repair

For exhaust manifold tightening sequence refer to procedure Service and Repair