Cylinder Head Assembly: Specifications
CYLINDER HEADGENERAL SPECIFICATIONS
Valve
Valve length
Intake 113.18 mm (4.4559 inch)
Limit 11 2.93 mm (4.4460 inch)
Exhaust 105.89 mm (4.1689 inch)
Limit 105.74 mm (4.1629 inch)
Stem O.D.
Intake 5.465 - 5.480 mm (0.2151 - 0.2157 inch)
Exhaust 5.458 - 5.470 mm (0.2149 - 0.2153 inch)
Face angle 45.25° - 45.75°
Margin
Intake 1.02 mm (0.0401 inch)
Exhaust 1.09 mm (0.0429 inch)
Valve stem to valve guide clearance
Intake 0.020 - 0.047 mm (0.00078 - 0.00185 inch)
Limit 0.07 mm (0.00275 inch)
Exhaust 0.030 - 0.054 mm (0.00118 - 0.00212 inch)
Limit 0.09 mm (0.00354 inch)
Valve guide
Length
Intake 43.8 - 44.2 mm (1.7244 - 1.7401 inch)
Exhaust 43.8 - 44.2 mm (1.7244 - 1.7401 inch)
Valve seat
Width of seat contact
Intake 1.16 - 1.46 mm (0.0457 - 0.0575 inch)
Exhaust 1.35 - 1.65 mm (0.0531 - 0.0649 inch)
Seat angle 44.75° - 45.10°
Valve spring
Free length 47.44 mm (1.8677 inch)
Load 19.0 ± 0.6 kg/35.0 mm (41.88 ± 1.32 lbs./1.3779 inch) 39.8 ± 1.2 kg/26.0 mm (87.74 ± 2.64lb/1.0236 inch)
Squareness 1.50 MAX.
Valve clearance
Cold (20°C [68°F])
Intake 0.17 - 0.23 mm (0.0067 - 0.0090 inch)
Limit 0.10 - 0.30 mm (0.0039 - 0.0118 inch)
Exhaust 0.27 - 0.33 mm (0.0106 - 0.0129 inch)
Limit 0.20 - 0.40 mm (0.0078 - 0.0157 inch)
Cylinder head
Flatness of gasket surface Maximum 0.05 mm (0.0019 inch)
Flatness of manifold mounting surface Maximum 0.10 mm (0.0039 inch)
Oversize rework dimensions of
TIGHTENING SPECIFICATIONS
Cylinder Head Bolts
Always use new cylinder head bolts.
Cylinder Head Installation Sequence:
First pass 34.3 Nm (3.5 kgf.m, 25.3 ft. lbs.)
Final pass Tighten 90°
Camshaft Bearing Cap Bolts
Install camshaft bearing caps in their proper locations.
Tightening order Group A - B - C
M6 10.78 - 12.74 Nm (1.1 - 1.3 kgf.m, 7.95 - 9.39 ft. lbs.)
M8 27.44 - 31.36 Nm (2.8 - 3.2 kgf.m, 20.24 - 23.14 ft. lbs.)
Camshaft & CVVT sprocket bolts 53.9-63.7 Nm (5.5-6.5 kgf.m, 39.7-47.0 ft. lbs.)
Intake manifold bolts & nuts 18.62 - 27.44 Nm (1.9 - 2.8 kgf.m, 13.73 - 20.24 ft. lbs.)
Exhaust manifold nuts 39.2 - 44.1 Nm (4.0 - 4.5 kgf.m, 28.92 - 32.53 ft. lbs.)