CYLINDER HEAD, CYLINDER, PISTON
CYLINDER HEAD, CYLINDER, PISTON
3-5-11
Technical Parameters
Item Standard Limit
Cylinder head:
Cylinder pressure value (use range)
Electric starter
Deformation of cylinder head
Cylinder head height
Seat ring seal width-exhaust
Seat ring seal width-intake
Seat angle
1.1 ~ 1.3 MPa (11~13 kgf/cm², 159~188 psi)
– – –
120.5 ± 0.03 mm (4.7441" ± 0.0012")
1.5 ~ 1.6 mm (0.0591" ~ 0.0630")
1.0 ~ 1.1 mm (0.0394" ~ 0.0433")
30.0° ± 1.5° / 45.0° ± 0.5° / 60.0° ± 1.5°
– – –
0.1 mm (0.004 in.)
– – –
1.9 mm (0.0748")
1.4 mm (0.0551")
– – –
Inner diameter of valve guide 5.500 ~ 5.512 mm (0.2165" ~ 0.2170") – – –
Valve spring:
Free length of valve spring 42.5 mm (1.6732" ) 41.4 mm (1.6299" )
Valve:
Valve clearance (cold state):
exhaust
Intake
Bent valve stem
Valve stem diameter:
exhaust
Intake
Valve stem clearance:
exhaust
Intake
Total length of valve stem:
exhaust
Intake
Valve/valve guide clearance (swing method):
exhaust
Intake
0.20 ~ 0.25 mm (0.0079" ~ 0.0098")
0.10 ~ 0.15 mm (0.0039" ~ 0.0059")
– – –
5.455 ~ 5.470 mm (0.2147" ~ 0.2153")
5.475 ~ 5.490 mm (0.2155" ~ 0.2161")
0.030 ~ 0.060 mm (0.0011" ~ 0.0023")
0.010 ~ 0.040 mm (0.0003" ~ 0.0015")
96.50 mm (3.7835")
95.50 mm (3.7598")
0.09 ~ 0.17 mm (0.0035" ~ 0.0067")
0.03 ~ 0.11 mm (0.0012" ~ 0.0043")
– – –
– – –
TIR 0.05 mm (0.020")
0.34 mm (0.0133")
0.25 mm (0.0110")
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