Cylinder Head Assembly: Specifications

SPECIFICATIONS
Valve
Valve length
Intake 114.34 mm (4.5016 inch)
Exhaust 116.8 mm (4.598 inch)
Stem O.D.
Intake 5.965 - 5.98 mm (0.2348 - 0.2354 inch)
Exhaust 5.950 - 5.965 mm (0.2343 - 0.2348 inch)
Face angle thickness of valve head (Margin)
Intake
Specification 1.15 mm (0.0452 inch)
Limit 0.8 mm (0.031 inch)
Exhaust
Specification 1.35 mm (0.0531 inch)
Limit 1.0 mm (0.039 inch)
Valve stem to valve guide clearance
Intake
Specification 0.02 - 0.05 mm (0.0008 - 0.0019 inch)
Limit 0.10 mm (0.0039 inch)
Exhaust
Specification 0.035 - 0.065 mm (0.0014 - 0.0026 inch)
Limit 0.13 mm (0.0051 inch)
Valve guide
Installed dimension O.D 46 mm (1.811 inch)
Intake 54.5 mm (2.146 inch)
Exhaust Service oversize 0.05, 0.25, 0.50 mm (0.002, 0.010, 0.020 inch) oversize
Valve seat
Width of seat contact
Intake 1.1 - 1.5 mm (0.043 - 0.059 inch)
Exhaust 1.3 - 1.7 mm (0.051 - 0.066 inch)
Seat angle 45°
Oversize 0.3, 0.6 mm (0.012, 0.024 inch) oversize
Valve spring
Free length 48.86 mm (1.9236 inch)
Load 18.3 kgf/39 mm (40.3 lbs./1.535 inch)
Installed height 39 mm (1.5354 inch)
Squareness 1.50 or less
Valve clearance
Cold (20°C [68°F])
Intake
Specification 0.20 mm (0.0079 inch)
Limit 0.12 - 0.28 mm (0.0047 - 0.0110 inch)
Exhaust
Specification 0.28 mm (0.0110 inch)
Limit 0.20 - 0.38 mm (0.0079 - 0.0150 inch)
Hot (80° [176°F]): only for reference
Intake 0.29 mm (0.0114 inch)
Exhaust 0.34 mm (0.0134 inch)
Cylinder head
Flatness of gasket surface
Specification Max. 0.03 mm (0.0012 inch)
Limit 0.06 mm (0.0024 inch)
Flatness of manifold mounting surface
Specification Max. 0.15 mm (0.0059 inch)
Limit 0.03 mm (0.0012 inch)
Oversize rework dimensions of valve seat hole
Intake
0.3 mm (0.012 inch) O.S. 33.300 - 33.325 mm (1.3110 - 1.3120 inch)
0.6 mm (0.024 inch) O.S. 33.600 - 33.625 mm (1.3228 - 1.3238 inch)
Exhaust
0.3 mm (0.012 inch) O.S. 28.800 - 28.821 mm (1.1338 - 1.1346 inch)
0.6 mm (0.024 inch) O.S. 29.100 - 29.121 mm (1.1456 - 1.1465 inch)
Oversize rework dimensions of valve guide hole (both intake and exhaust)
0.05 mm (0.002 inch) O.S 11.05 - 11.068 mm (0.435 - 0.4357 inch)
0.25 mm (0.010 inch) O.S 11.25 - 11.268 mm (0.443 - 0.4436 inch)
0.50 mm (0.020 inch) O.S 11.50 - 11.518 mm (0.453 - 0.4535 inch)
Camshaft (W/O - CVVT)
Cam lobe height
Intake
Specification 44.820 mm (1.7646 inch)
Limit 44.720 mm (1.7606 inch)
Exhaust
Specification 44.720 mm (1.7606 inch)
Limit 44.620 mm (1.7567 inch)
Camshaft (W/CVVT)
Cam height
Intake
Specification 44.618 mm (1.7566 inch)
Limit 44.518 mm (1.7527 inch)
Exhaust
Specification 44.518 mm (1.7527 inch)
Limit 44.418 mm (1.7487 inch)
Journal O.D. 28 mm (1.1023 inch)
Bearing oil clearance
Specification 0.02 - 0.061 mm (0.0008 - 0.0024 inch)
Limit 0.1 mm (0.0039 inch)
End play 0.1 - 0.2 mm (0.004 - 0.008 inch)
Flywheel
Runout 0.1 mm (0.0039 inch) 0.13 mm (0.0051 inch)

Part 1:

Part 2:

Part 3:

TIGHTENING TORQUE

Cylinder Head bolts





Using 8 mm and 10 mm hexagon wrench, install and tighten the 10 cylinder head bolts and plate washers, in several passes, in the sequence shown.