Cylinder Head Assembly: Specifications

CYLINDER HEAD

GENERAL SPECIFICATIONS
Flatness of gasket surface Less than 0.05 mm (0.0019 inch) [Less than 0.02 mm (0.0008 inch) 150x150]
Flatness of manifold mounting
Intake Less than 0.1 mm (0.0039 inch) [Less than 0.03 mm (0.01 inch)/110x110]
Exhaust Less than 0.1 mm (0.0039 inch) [Less than 0.03 mm (0.001 inch)/110x110]

Valve
Valve length
Intake 105.27 mm (4.1445 inch)
Exhaust 105.50 mm (4.1535 inch)
Stem outer diameter
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°
Thickness of valve head (margin)
Intake 1.56 - 1.86 mm (0.06142 - 0.07323 inch)
Exhaust 1.73 - 2.03 mm (0.06811 - 0.07992 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
Inner diameter
Intake 5.500 - 5.512 mm (0.2165 - 0.2170 inch)
Exhaust 5.500 - 5.512 mm (0.2165 - 0.2170 inch)
Length
Intake 41.8 - 42.2 mm (1.6457 - 1.6614 inch)
Exhaust 41.8 - 42.2 mm (1.6457 - 1.6614 inch)
Valve seat
Width of seat contact
Intake 1.15 - 1.45 mm (0.05118 - 0.05709 inch)
Exhaust 1.35 - 1.65 mm (0.05315 - 0.06496 inch)
Seat angle
Intake 44.75° - 45.10°
Exhaust 44.75° - 45.10°
Valve spring
Free length 43.86 mm (1.7267 inch)
Load 19.3±0.8 kg/34.0 mm (42.7±1.8 lb/1.3386 inch) 42.3±1.3 kg/24.2 mm (93.3±2.9 lb/0.9527 inch)
Out of squareness Less than 1.5°
MLA
MLA outer diameter
Intake 34.964 - 34.980 mm (1.3765 - 1.3772 inch)
Exhaust 34.964 - 34.980 mm (1.3765 - 1.3772 inch)
Cylinder head tappet bore inner diameter
Intake 35.000 - 35.025 mm (1.3779 - 1.3789 inch)
Exhaust 35.000 - 35.025 mm (1.3779 - 1.3789 inch)
MLA to tappet bore clearance
Intake 0.020 - 0.061 mm (0.0008 - 0.0024 inch)
Limit 0.07 mm (0.0027 inch)
Exhaust 0.020 - 0.061 mm (0.0008 - 0.0024 inch)
Limit 0.07 mm (0.0027 inch)
Valve clearance
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)

TIGHTENING SPECIFICATIONS

Cylinder Head Bolts

Always use new cylinder head bolts.

Cylinder Head Bolts Installation Sequence:

First pass 39.2 Nm (4.0 kgf.m, 28.93 ft. lbs.)
Second pass Tighten 120°
Final pass Tighten 90°

Camshaft bearing cap bolts 9.80 - 11.76 Nm (1.0 - 1.2 kgf.m, 7.23 - 8.68 ft. lbs.)

CVVT & camshaft sprocket bolts 64.68 - 76.44 Nm (6.6 - 7.8 kgf.m, 47.74 - 56.4 ft. lbs.)

Intake manifold nuts & bolts 18.62 - 23.52 Nm (1.9 - 2.4 kgf.m, 13.73 - 17.36 ft. lbs.)

Exhaust manifold nuts 39.20 - 44.10 Nm (4.0 - 4.5 kgf.m, 28.93 - 32.55 ft. lbs.)