| Year | 1952 |
| Date | 21-Feb |
| Volume | 106 |
| Issue | 2,648 |
| Page | 240 |
| Category | Petrol Engine Topics |
| Part | |
| Title | New Engines for Old. How an Ancient Gas Engine was Improved, Modernised, and Given a New Lease of Life |
| Author | Edgar T.Westbury |
| Notes | Idler gear pivot, cutaway sketch of valve-operating mechaism, arrangement of camshaft and timing gears, timing gears, setting the timing, valve rockers, rocker pivot bracket, tappet clearance adjustment |