Piston Specifications
| Piston Diameter (Std.) Note: There are three standard sizes of pistons marked with a No. on top. | No.1 | 3.1473-3.1477 Note: No. 1, 3.1473-3.1477 inch; No. 2, 3.1477-3.1481 inch; No. 3, 3.1481-3.1485 inch. |
| No.2 | 3.1477-3.1481 | |
| No.3 | 3.1481-3.1485 | |
| Piston Clearance | .0024-.0031 |