Power curve graph comparing the performance of a standard head (EB 222) versus a head with large inlet valves (EB GIS) on a Bentley engine.
| Identifier | ExFiles\Box 31\2\ Scan125 | |
| Date | 29th August 1933 guessed | |
| B.H.P BENTLEY - POWER CURVES. CURVE 13. COMPARISON OF HEADS EB 222 (STD) & EB GIS (LARGE INLET VALVES) STD HEAD - EB 222 LARGE VALVE HEAD - EB GIS TWO 1 5/8 S V CARBS. R.P.M. | ||
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).