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 for a 4 1/4 Litre Bentley engine showing B.M.E.P. and ignition timing against R.P.M. for the 'Paulin Car' unit.
| Identifier | ExFiles\Box 83\3\ scan0096 | |
| Date | 1st March 1939 | |
| 4 1/4 LITRE BENTLEY (UNIT FOR 'PAULIN CAR') MAR. 1939 5.38 UNIT NO B 19 (SERIES II) CYL. HEAD EX 22954 A IN. VALVE EX 23266 EX. VALVE EX 23267 * PISTONS. P.325 (AEROLITE) C/R = 8.7 : 1 (-.030 GASK) ESSO ETHYL TEST BED SILENCER. 1 7/8 IND'N SYSTEM CAMSHAFT EB. 2746 ① MIN. ADV. FOR MAX. POWER ② LINE TO JUST AVOID DET'N. * FLAT TOP PISTONS B.M.E.P. R.P.M. IGNITION DEGREES B.T.D.C. C T S | ||