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).
Power comparison graph of various High Power Bentley cylinder heads.
| Identifier | ExFiles\Box 133\1\ scan0084 | |
| Date | 10th July 1936 | |
| HIGH POWER BENTLEY FIG. III. POWER COMPARISON OF HIGH POWER BENTLEY HEADS. CYLINDER HEADS:- STD. BENT. E.B. 2560; T.T. BENT. EX. 22594 HIGH POWER S/C, L.E.C. 4123. VALVE TIMING:- STD. BENTLEY TIMING FOR T.T. BENTLEY HEADS. HIGH POWER TIMING:- I.O. 2°E I.C. 28°L; E.O. 51°E; E.C. 7°L C.R. = 6.5 OPEN EXHAUST: BORE = 3.50" HIGH POWER TURBULENT HEAD. HIGH POWER T.T. HEAD. STANDARD LARGE VALVE HEAD. B.M.E.P. B.H.P. R.P.M. J.L.E. 10.7.36. | ||