Pre-unit C GroupStandard bore sizes and piston to bore clearances are (Clearances in inches):- C10, 10L std bore = 63mm. Clearance .0045/.0065. C11, 11G, 12 std bore =63mm. Clearance .0035/.0055 | |||
681 | Liner ONLY (plain liner not flanged) | C10, 10L, 11, 11G, 12 | |
7150 | Piston, STD / 20 / 30 / 40 / 60 | C10, 10L | 1939-57 |
15504 | Piston, c.r. 6.5:1, STD, 20, 30, 40, 60 | C12 | 1940-41 |
8267 | Piston, 6.5:1, STD, 20, 30, 40, 60 | C11, 11G, 12 | 1939-58 |
R3660 | Piston rings, STD, 20, 30, 40, 60 | C12 | 1940-41 |
R3640 | Piston rings, STD, 20, 40, 60 | C | 1946-58 |
65-0437 | Gudgeon pin | C12 | 1940-41 |
65-0438 | Piston circlip, wire type for genuine pistons | C | 1946-58 |
65-0438A | Piston circlip, Seeger type, Hepolite pistons | C | 1946-58 |
66-0954 | Circlip | C12 | 1940-41 |
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