ENGINE SPECIFICATIONS
2-5
Installed length (intake)
35.50 mm (1.40 in)
Installed length (exhaust)
33.00 mm (1.30 in)
Spring rate K1 (intake)
42.91 N/mm (245.02 lb/in) (4.38 kgf/mm)
Spring rate K2 (intake)
56.23 N/mm (321.07 lb/in) (5.73 kgf/mm)
Spring rate K1 (exhaust)
40.10 N/mm (228.97 lb/in) (4.09 kgf/mm)
Spring rate K2 (exhaust)
51.85 N/mm (296.06 lb/in) (5.29 kgf/mm)
Installed compression spring force (intake)
171–197 N (38.44–44.29 lbf) (17.44–20.09
kgf) at 35.50 mm (1.398 in)
Installed compression spring force (exhaust)
202–232 N (45.41–52.15 lbf) (20.60–23.66
kgf) at 33.00 mm (1.299 in)
Spring tilt (intake)*
2.5
°/
1.7 mm
Spring tilt (exhaust)*
2.5
°/
1.7 mm
Winding direction (intake)
Clockwise
Winding direction (exhaust)
Clockwise
Cylinder
Bore
77.000–77.010 mm (3.0315–3.0319 in)
Taper limit
0.050 mm (0.0020 in)
Out of round limit
0.050 mm (0.0020 in)
Piston
Piston-to-cylinder clearance
0.010–0.035 mm (0.0004–0.0014 in)
Limit
0.12 mm (0.0047 in)
Diameter D
76.975–76.990 mm (3.0305–3.0311 in)
Height H
12.0 mm (0.47 in)
Offset
0.50 mm (0.0197 in)
Offset direction
Intake side
Piston pin bore inside diameter
17.002–17.013 mm (0.6694–0.6698 in)
Piston pin outside diameter
16.991–17.000 mm (0.6689–0.6693 in)
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