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).
Performance graph comparing turbulent and standard cylinder heads on a camshaft with small inlet valves.
| Identifier | ExFiles\Box 179b\2\ img114 | |
| Date | 4th October 1932 guessed | |
| COMPARISON OF TURBULENT AND NON TURBULENT SINGLE 1 5/8 S.U. 6.27 C/R CAMSHAFT TO SMALL INLET VALVES I-125 A TURBULENT HEAD Lc C[...] B STANDARD HEAD Valve Timing Diagram: 8 5 107° SHAFT E 100863 Ex IN .020 34 42 Axes: B.H.P. R.P.M. | ||