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 detailing the inlet valve lift of an Alfa-Romeo unit against the crank angle in degrees.
| Identifier | ExFiles\Box 124\5\ scan0039 | |
| Date | 17th February 1932 guessed | |
| UNIT ALFA-ROMEO INLET VALVE LIFT V1298 VALVE LIFT (INS.) OPENING CLOSING T.D.C. INLET EXHAUST CLOSING CRANK ANGLE (DEGREES) B.D.C. 0.325 0.300 0.275 0.250 0.225 0.200 0.175 0.150 0.125 0.100 0.075 0.050 0.025 340 360 380 400 420 440 460 480 500 520 540 560 580 600 620 | ||