| Year | 2015 |
| Date | 27-Nov |
| Volume | 215 |
| Issue | 4,522 |
| Page | 824 |
| Category | Internal Combustion |
| Part | |
| Title | The Function of Piston Rings |
| Author | Ben Crowdy |
| Notes | Explains the role of piston rings and describes a useful truing jig. Operating conditions, dimensions, shape, piston ring manufacture without heat treatment or hammering, cutting the ring blanks, gapping the ring, final machining |