Subaru EX40 - Piston Ring Specifications

- 74 -
ITEM STD Limit
PISTON
* Ring groove side clearance
Top
0.050 - 0.090
(0.0020 - 0.0035)
0.15
(0.0059)
Oil ring
(three-piece)
0.030 - 0.125
(0.0012 - 0.0049)
-
* Piston pin hole
20.989 - 21.022
(0.8263 - 0.8276)
21.045
(0.82854)
* Piston pin outer diameter
20.992 - 21.000
(0.8265 - 0.8268)
20.960
(0.8252)
* Clearance between piston and cylinder at skirt
0.065 - 0.107
(0.0026 - 0.0042)
0.25
(0.0098)
* Piston ring end gap
Top
0.10 - 0.25
(0.0039 - 0.0098)
1.5
(0.0591)
Oil ring
(three-piece)
0.15 - 0.55
(0.0059 - 0.0217)
1.5
(0.0591)
Unit: mm (in.)