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ENGINE TOP END 5-9
Specifications
Item Standard Service Limit
Valve Stem Diameter:
Exhaust 4.955 ∼ 4.970 mm
(0.1951 ∼ 0.1957 in.)
4.94 m m
(0.1945 in.)
Inlet 4.975 ∼ 4.990 mm
(0.1959 ∼ 0.1965 in.)
4.96 m m
(0.1953 in.)
Valve Guide Inside Diameter:
Exhaust 5.000 ∼ 5.012 mm
(0.1969 ∼ 0.1973 in.)
5.08 m m
(0.20 in.)
Inlet 5.000 ∼ 5.012 mm
(0.1969 ∼ 0.1973 in.)
5.08 m m
(0.20 in.)
Valve/Valve Guide Clearance
(Wobble Method):
Exhaust 0.09 ∼ 0.17 mm
(0.0035 ∼ 0.0067 in.)
0.37 m m
(0.0146 in.)
Inlet 0.03 ∼ 0.11 mm
(0.0012 ∼ 0.0043 in.)
0.31 m m
(0.0122 in.)
Valve Seat Cutting Angle 45°, 32°, 60° –––
Valve Seating Surface:
Outside Diameter:
Exhaust 25.2 ∼ 25.4 mm
(0.992 ∼ 1.000 in.)
–––
Inlet 29.4 ∼ 29.6 mm
(1.157 ∼ 1.165 in.)
–––
Width:
Exhaust 0.5 ∼ 1.0 mm
(0.02 ∼ 0.04 in.)
–––
Inlet 0.5 ∼ 1.0 mm
(0.02 ∼ 0.04 in.)
–––
Valve Spring Free Length:
Exhaust
41.3 mm (1.626 in.) 39.5 mm (1.555 in.)
Inlet
41.3 mm (1.626 in.) 39.5 mm (1.555 in.)
Cylinder, Piston
Cylinder Inside Diameter 84.994 ∼ 85.006 mm
(3.3462 ∼ 3.3467 in.)
85.10 mm
(3.350 in.)
Piston Diameter 84.964 ∼ 84.979 mm
(3.3450 ∼ 3.3456 in.)
84.81 mm
(3.3390 in.)
Piston/Cylinder Clearance 0.015 ∼ 0.042 mm
(0.0006 ∼ 0.0017 in.)
–––
Piston Ring/Groove Clearance:
Top 0.04 ∼ 0.08 mm
(0.0016 ∼ 0.0032 in.)
0.18 m m
(0.0071 in.)
Second
0.03 ∼ 0.07 mm
(0.0012 ∼ 0.0028 in.)
0.17 m m
(0.0067 in.)
Piston Ring Groove Width:
Top 1.03 ∼ 1.05 mm
(0.0405 ∼ 0.0413 in.)
1.13 m m
(0.0445 in.)