Technique parameters
3
Technical specification of service
Items Parameters
Cylinder cover
Height (mm{in})
Standard
124.45 ～ 124.55{4.8996 ～
4.9035}
Maximum grinding
allowance
0.2{0.0078}
Deformation at joint face of
cylinder gasket (mm{in})
Max. 0.03{0.0011}
Deformation at joint face of
manifold (mm{in})
Max. 0.05{0.0019}
Maximum grinding
allowance
0.20{0.0078}
Valve gap (cold status of engine)
(mm{in})
Intake 0.18～0.26{0.007～0.0102}
Exhaust 0.26～0.34{0.0102～0.0133}
Valve and valve guide pipe
Edge thickness
(mm{in})
Intake
Standard 0.85{0.0334}
Min. 0.35{0.014}
Exhaust
Standard 1.50{0.0590}
Min. 0.9{0.035}
Valve length
(mm{in})
Intake
Standard
101.15 ～ 101.65{3.9822 ～
4.0019}
Min. 100.95{3.9744}
Exhaust
Standard
101.07 ～ 101.57{3.9791 ～
3.9988}
Min. 100.87{3.9712}
Valve stem
diameter
(mm{in})
Intake
Standard 4.965～4.980{0.1954～0.1960}
Min. 4.915{0.1935}
Exhaust
Standard 4.955～4.970{0.195～0.1956}
Min. 4.905{0.1931}
I.D. of valve duct (mm{in})
Standard 5-5.012{0.1968-0.1973}
Enlarged size 5.012-5.022{0.1973-0.1977}
Protrusion height of valve guide
pipe (mm{in})
Intake 19.8-20.4{0.7795-0.8031}
Exhaust 14.6-15.2{0.5748-0.5984}
Valve seat
Contact width of valve seat (mm{in}) 0.9～1.3{0.0354～0.0511}
Valve seat angle (º)
Intake 43.5～44
Exhaust 43.5～44
Sink of valve seat (protrusion
height of valve) (mm{in})
Intake 44.37{1.7468}
Exhaust 44.37{1.7468}
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