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).
Performance comparison graph between a 1760cc Alfa Romeo engine and a 2364cc Peregrine engine.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page208 | |
| Date | 28th July 1932 guessed | |
| COMPARISON OF 1760 CC ALFA ROMEO X 2364 CC PEREGRINE BOTH CURVES OPEN EXHAUST TABLE DATA: COMP RATIO INLET THROAT AREA/LITRE DURATION OF INLET VALVE OPENING BOOST AT 4000RPM BOOST TEMP 4500RPM PEREGRINE: 5.85, 2.69, 220, 14" Hg, 70°C ALFA ROMEO: 5.35, 3.28, 233, 12" HG, 45°C VALVE TIMING DIAGRAMS: PEREGRINE: T.D.C 11, EX 40, IN 40, 020 CLCE ALFA ROMEO: 27 10-B, EX 53.5, IN 40, 020 CLCE GRAPH LABELS: B.H.P PER LITRE B.M.E.P RPM PEREGRINE INDUCTION PIPE WATER COOLED PEREGRINE ALFA BHP/LITRE | ||