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 graph showing increased power output for the 'China Engine' with various engine specifications and valve timings.
| Identifier | ExFiles\Box 5a\5\ 05-page214 | |
| Date | 29th October 1928 | |
| INCREASED POWER OUTPUT (CHINA ENGINE) ENGINE 'F' 30-C-S COMPRESSION RATIO = 5.25 12½° INCLINE CAMSHAFT LARGE VALVES (1-400 DIA) STANDARD INDUCTION MANIFOLD 1⅛" CARBURETTOR CYL. BLOCK (No 7) PRESSURE ENGAGED TO PROCON (25 LBS V TIC) OPEN EXHAUST VALUE TIMING I.O. 15° AFTER T.D.C. I.C. 45° AFTER B.D.C E.O. 44° BEFORE B.D.C E.C. 4° AFTER T.D.C BRAKE HORSE POWER B.M.E.P. (LB. PER SQ. IN.) R.P.M. of ENGINE STD. CURVE (OPEN EXHAUST) STD. CURVE C (OPEN EXHT.) | ||