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 airflow versus pressure differential for different engine cylinder heads.
Identifier | ExFiles\Box 31\2\ Scan135 | |
Date | 26th September 1938 guessed | |
SHEET 2 COMPARISON OF DIFFERENT HEADS FLOW CU.FT./MIN PRESS. DIFF. ACROSS VALVE - INS. Hg. 8 LITRE BENTLEY HEAD. ALL TAKEN AT FULL LIFT PHANTOM + .480 BENTLEY + .585 P.II LARGE VALVE - E 83206 VALVE DIA - 2.00 P.II STD HEAD - E 83538 VALVE DIA - 1.9 P.II HEAD (NON-TURBULENT) VALVE DIA - 1.73 P.I STD HEAD. SPECIAL SMALL INLET VALVES VALVE DIA - 1.70 | ||