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 development performance graph for a 4 1/4 Litre Bentley engine's induction system.
| Identifier | ExFiles\Box 90a\1\ Scan007 | |
| Date | 21th July 1938 guessed | |
| B.2 UNIT 4 1/4 LITRE BENTLEY S.4 POWER DEVELOPMENT INDUCTION COMP. RATIO 9:1 Ex 20943 CAMSHAFT EB 085 (STD) ① C.F. 1 7/8 S.U CARBS ON 1 7/8 BORE PIPE ② 6. AMAL STRAIGHT ON TO THE PORTS ③ THROTTLE BORE = 1.125 ④ = 1.187 BHP BMEP RPM CTS{C. Trot Salt - Carburation} | ||