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ENGINE TOP END 4-5
Standard
Service Limit
Item
Valve/valve guide clearance
(wobble method):
0.031 -0.140 mm
0.085- 0.180 mm
0.34 mm
0.41 mm
Inlet
Exhaust
Valve stem diameter
3.975 -3.990 mm
3.955 -3.970 mm
4.000 -4.012 mm
3.96 mm
3.94 mm
4.08 mm
Inlet
Exhaust
Valve guide inside diameter
~ 57.000 -57.01 2 mm
56.942 -56.957 mm
0.043 -0.070 mm
+ 0.5 mm
0.030 -0.070 mm
57.10 mm
56.79 mm
Cylinder. Piston:
Cylinder inside diameter
Piston diameter
Piston/cylinder clearance
Oversize piston and rings
Piston ring/groove clearance
Piston ring end gap:
0.17 mm
0.20 -0.40 mm
0.35 -0.50 mm
0.70 mm
0.80 mm
Top
Second
Valve Stem Bend
Valve Head