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5-8 ENGINE TOP END
Specifications
Item Standard Service Limit
Camshafts
Cam Height:
Exhaust 33.743 ∼ 33.857 mm (1.3285 ∼ 1.3330 in.) 33.64 mm (1.324 in.)
Intake 34.443 ∼ 34.557 mm (1.3560 ∼ 1.3605 in.) 34.34 mm (1.352 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 (0.9413 in.)
Camshaft Bearing In
side
Diameter
24.000 ∼ 24.021 mm (0
.9449 ∼ 0.9457 in.)
24.08 mm (0.9480 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)
966 ∼ 1 478 kPa (9.9 ∼ 15.1 kgf/cm², 140 ∼
214 psi) at 280 r/min (rpm)
–––
Cylinder Head Warp ––– 0.05 mm (0.002 in.)
Valves
Valve Clearance:
Exhaust 0.22 ∼ 0.31 mm (0.0087 ∼ 0.0122 in.) –––
Intake 0.15 ∼ 0.24 mm (0.0059 ∼ 0.0094 in.) –––
Valve Head Thickness:
Exhaust
0.8 mm (0.031 in.) 0.6 mm (0.024 in.)
Intake
0.5 mm (0.020 in.) 0.3 mm (0.012 in.)
Valve Stem Bend TIR 0.01 mm (0.0
004 in.) or less
TIR 0.05 mm (0.0
02 in.)
Valve Stem Diameter:
Exhaust 4.455 ∼ 4.470 mm (0.1754 ∼ 0.1760 in.) 4.44 mm (0.175 in.)
Intake 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.)
Intake 4.500 ∼ 4.512 mm (0.1772 ∼ 0.1776 in.) 4.58 mm (0.180 in.)
Valve/Valve Guide
Clearance (Wobble Method):
Exhaust
0.08 ∼ 0.16 m
m (0.0031 ∼ 0.0063 in.)
0.35 mm (0.0
13 in.)
Intake 0.03 ∼ 0.10 mm (0.0012 ∼ 0.0039 in.) 0.30 mm (0.012 in.)
Valve Seat Cutting Angle 32°, 45°, 60° –––
Valve Seating Surface:
Width:
Exhaust
0.8 ∼ 1.2 mm (0.031 ∼ 0.047 in.)
–––
Intake
0.5 ∼ 1.0 mm
(0.020 ∼ 0.039 in.)
–––
Outside Diameter:
Exhaust 24.7 ∼ 24.9 mm (0.972 ∼ 0.980 in.) –––
Intake 28.9 ∼ 29.1 mm (1.138 ∼ 1.146 in.) –––
Valve Spring Free Length:
Exhaust 36.62 mm (1.442 in.) 35.2 mm (1.39 in.)
Intake 36.62 mm (1.442 in.) 35.2 mm (1.39 in.)
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