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).
Graph comparing engine power (BHP) and BMEP against RPM for standard versus small bore induction pipes on Unit B4.
| Identifier | ExFiles\Box 3\6\ 06-page296 | |
| Date | 4th July 1935 guessed | |
| POWER COMPARISON OF INDUCTION PIPES B.V.57 UNIT:- B4 HIGH COMPRESSION ALUMINIUM CYLINDER HEAD COMPRESSION RATIO = 7.39:1 EXHAUST VALVES 1.200 DIA. INLET VALVES 1.500 DIA. AEROLITE 'RACING' PISTONS NO AIR SILENCER ① STANDARD INDUCTION PIPE 1.500 DIA ② SMALL BORE INDUCTION PIPE 1.375 DIA. VALVE TIMING AS ON B.V. 53. B.H.P R.P.M. B.M.E.P. (lb/□") | ||