Pistons
| Pistons |
| General data |
|
Piston clearance, nominal
|
mm
|
0.025-0.045
|
|
Measurements
|
||
|
R
|
mm
|
43
|
|
A
|
mm
|
3.45
|
|
Ø
|
mm
|
78.5
|
|
H
|
mm
|
56.45
|
| Piston diameter |
Piston diameter is measured at right angles to the gudgeon pin holes, 16 mm from the bottom of the piston.
| Important | ||
|
New pistons are graphite coated, but the coating is not included in the measurement below. |
||
| Classification codes |
|
Standard
|
||
|
8
|
mm
|
85.945-85.955
|
|
99
|
mm
|
85.955-85.965
|
|
00
|
mm
|
85.965-85.975
|
|
01
|
mm
|
85.975-85.985
|
|
02
|
mm
|
85.985-85.995
|
|
Oversizes
|
||
|
7+0.5
|
mm
|
86.435-86.445
|
|
8+0.5
|
mm
|
86.445-86.455
|
|
9+0.5
|
mm
|
86.455-86.465
|
|
0+0.5
|
mm
|
86.465-86.475
|
| Piston rings |
|
Upper compression ring
|
Lower compression ring
|
Scraper ring
|
||
|
Thickness
|
mm
|
1.478-1.490
|
1.478-1.490
|
3.0
|
|
Working gap in cylinder
|
mm
|
0.30-0.50
|
0.30-0.50
|
0.40-1.40
|
| Gudgeon pin |
|
Diameter
|
mm
|
20.995-21.000
|
|
Gudgeon pin in relation to connecting rod
|
mm
|
Floating bearing
|
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