From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagrams illustrating valve timing and a rear engine mounting.
| Identifier | ExFiles\Box 126\1\ scan0082 | |
| Date | 24th January 1938 guessed | |
| TOP DEAD CENTRE. INTAKE OPENS. EXHAUST CLOSES. 5° 10° INTAKE CLOSES. 45° EXHAUST OPENS. 45° 230° VALVE TIMING DIAGRAM. REAR ENGINE MOUNTING. RUBBER. | ||