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 power (BHP) and Mean Effective Pressure (MEP) against engine speed (RPM) for a Phantom II engine with different tappet setups.
| Identifier | ExFiles\Box 17\6\ Scan254 | |
| Date | 21th June 1934 guessed | |
| POWER COMPARISON (PHANTOM II) OPEN EXHAUST 5.25:1 C.R. E.30070 CAMSHAFT TIMING WITH .020 C'LCE I.O. 9° PTDC E.O. 54.5° BBDC I.C. 46° PBDC E.C. 7.5° ATDC LARGE SEMI EXPANDING CARB (NO AIR SILENCER) -x- CADILLAC TYPE TAPPETS (NO CLEARANCE) -.- TAPPETS SET .006 EXHAUST .004 INLET B.H.P. R.P.M. M.E.P. | ||