| Piston diameter (single grade) |
3.4441 +/-0.0003 in (87.48 +/-.007 mm) |
| Piston-to-bore clearance |
0.0005 -0.0019 in (.013 -.047 mm) |
| Piston ring groove width - compression (top) |
0.0484 -0.0492 in (1.23 -1.25 mm) |
| Piston ring groove width - compression (bottom) |
0.0480 -0.0488 in (1.22 -1.24 mm) |
| Piston ring groove width - oil |
0.0791 -0.0799 in (2.01 -2.03 mm) |
| Piston ring width - compression (top) (Axial) |
0.05 in (1.2 mm) |
| Piston ring width - compression (bottom) (Axial) |
0.05 in (1.2 mm) |
| Piston ring width - oil (Radial) |
0.08 in (2 mm) |
| Piston ring gap (in bore) - compression (top) |
0.0067 -0.0106 in (.17 -.27 mm) |
| Piston ring gap (in bore) - compression (bottom) |
0.0157 -0.0236 in (.4 -.6 mm) |
| Piston ring gap (in bore) - oil |
0.0059 -0.0177 in (.15 -.45 mm) |
| Piston skirt coating thickness |
0.0002 -0.0006 in (.005 -.015 mm) |