TOHATSU 90 - Page 79

POWERHEAD
4-5
3-/ 4-Cylinder
Figure Description Unit 40 / 50 60 / 70 80 / 90 115 / 120 /140
Cylinder
Bore
(Standard)
in
mm
2.677
68.0
2.913
74.0
3.386
86.0
3.465
88.0
Piston
Clearance
0.0012 - 0.0028
0.03 - 0.07
0.0016 - 0.0031
0.04 - 0.08
0.0031 - 0.0051
0.08 - 0.13
0.0039 - 0.0055
0.10 - 0.14
Piston Ring
End Gap
in
mm
Top Ring
0.008 - 0.015
0.22 - 0.37
2nd Ring:
0.013 - 0.018
0.33 - 0.48
0.009 - 0.015
0.22 - 0.37
0.010 - 0.016
0.25 - 0.40
0.011 - 0.019
0.28 - 0.49
Connecting
Rod Bearing
(Small End)
in
mm
0.669
17.0
0.787
20.0
0.787
20.0
0.787
20.0
0.827
21.0
0.984
25.0
0.984
25.0
0.984
25.0
1.063
27.0
0.945
24.0
1.102
28.0
1.102
28.0
0.079
2.0
0.098
2.5
0.098
2.5
0.098
2.5
Connecting
Rod Bearing
(Big End)
in
mm
0.984
25.0
1.063
27.0
1.181
30.0
1.260
32.0
1.260
32.0
1.417
36.0
1.535
39.0
1.614
41.0
0.778
19.8
0.709
18.0
0.858
21.8
0.866
22.0
0.138
3.5
0.177
4.5
0.177
4.5
0.177
4.5
2
1
2
3
4
1
2
3
4
4
1
2
3
4
T1157 T1158 T1159