| Year | 1953 |
| Date | 21-May |
| Volume | 108 |
| Issue | 2,713 |
| Page | 622 |
| Category | Internal Combustion |
| Part | |
| Title | The Napier "Deltic" Engine |
| Author | Edgar T.Westbury |
| Notes | Details of a noteworthy development. Cylinder arrangement, opposed-piston engines, patented oil-cooled piston, the "Deltic" engine, cross-section, scavenging blower, leading technical details |