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ENGINE TOP END 5-11
Specifications
Item Standard Service Limit
Camshafts
Cam Height:
Exhaust
34.443 ∼ 34.557 mm (1.3560 ∼ 1.3605 in.) 34.34 mm (1.352 in.)
Inlet
35.043 ∼ 35.157 mm (1.3796 ∼ 1.3841 in.) 34.94 mm (1.376 in.)
Camshaft Journal, Camshaft
Cap Clearance
0.038 ∼ 0.081 mm (0.0015 ∼ 0.0032 in.) 0.17 mm (0.0067 in.)
Camshaft Journal Diameter 23.940 ∼ 23.962 mm (0.9425 ∼ 0.9434 in.) 23.91 mm (0.941 in.)
Camshaft Bearing Inside
Diameter
24.000 ∼ 24.021 mm (0.9449 ∼ 0.9457 in.) 24.08 mm (0.948 in.)
Camshaft Runout TIR 0.02 mm (0.0008 in.) or less TIR 0.1 mm (0.004 in.)
Cylinder Head
Cylinder Compression (Usable Range)
1 100 ∼ 1 670 kPa (11.2 ∼ 17.0 kgf/cm²,
159 ∼ 242 psi) at 320 r/min (rpm)
–––
Cylinder Head Warp ––– 0.05 mm (0.002 in.)
Valves
Valve Clearance:
Exhaust 0.17 ∼ 0.22 mm (0.0067 ∼ 0.0087 in.) –––
Inlet 0.15 ∼ 0.24 mm (0.0059 ∼ 0.0094 in.) –––
Valve Head Thickness:
Exhaust 0.8 mm (0.031 in.) 0.4 mm (0.016 in.)
Inlet 0.5 mm (0.020 in.) 0.25 mm (0.001 in.)
Valve Stem Bend TIR 0.01 mm (0.0004 in.) or less TIR 0.05 mm (0.002 in.)
Valve Stem Diameter:
Exhaust
4.470 ∼ 4.485 mm (0.1760 ∼ 0.1766 in.) 4.46 mm (0.176 in.)
Inlet 4.475 ∼ 4.490 mm (0.1762 ∼ 0.1768 in.) 4.46 mm (0.176 in.)
Valve Guide Inside Diameter:
Exhaust 4.500 ∼ 4.512 mm (0.1772 ∼ 0.1776 in.) 4.58 mm (0.180 in.)
Inlet
4.500 ∼ 4.512 mm (0.1772 ∼ 0.1776 in.) 4.58 mm (0.180 in.)
Valve/valve Guide Clearance
(Wobble Method):
Exhaust
0.04 ∼ 0.12 mm (0.0016 ∼ 0.0047 in.) 0.34 mm (0.013 in.)
Inlet
0.03 ∼ 0.10 mm (0.0012 ∼ 0.0039 in.) 0.34 mm (0.013 in.)
Valve Seat Cutting Angle 45°, 32°, 60°
–––
Valve Seating Surface:
Width:
Exhaust
0.8 ∼ 1.2 mm (0.031 ∼ 0.047 in.)
–––
Inlet 0.5 ∼ 1.0 mm (0.020 ∼ 0.039 in.) –––
Outside Diameter:
Exhaust 24.9 ∼ 25.1 mm (0.980 ∼ 0.988 in.) –––
Inlet
29.4 ∼ 29.6 mm (1.157 ∼ 1.165 in.)
–––
Valve Spring Free Length:
Exhaust
44.78 mm (1.763 in.) 42.9 mm (1.689 in.)
Inlet 39.15 mm (1.541 in.) 37.5 mm (1.476 in.)
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