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 the effect of increased valve lift on the 'Japan Engine'.
| Identifier | ExFiles\Box 13\2\ 02-page125 | |
| Date | 5th August 1931 guessed | |
| R.{Sir Henry Royce} P. M.{Mr Moon / Mr Moore} B.M.E.P. B.H.P. INCREASE IN PEAK POWER DUE TO HIGHER LIFT 6 1/2% STD VALVE LIFT .344 INCREASED VALVE LIFT .395 TIMING .020" TAPPET CL'CE VALVE TIMING DIAGRAM: IN 43, EX 43, 5, 7 CURVE III EFFECT OF INCREASED VALVE LIFT ON JAPAN ENGINE 5.35 C/R TWIN ZENITH 26 m/m CHOKE. P. II SHORT TYPE SILENCER 2" DOWNTAKE 112° CAMSHAFT ALL TESTS C.O. CLOSED | ||