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 and specifications for the 'Japan Unit' engine.
| Identifier | ExFiles\Box 181\M13\M13.2\ img103 | |
| Date | 18th September 1931 guessed | |
| JAPAN UNIT. R.M.29. COMP RATIO 5·35-1 HIGH LIFT ROCKERS ·395" INLET VALVES 1·4" DIA. THROAT. 112° CAMSHAFT OPEN EXHAUST CLAUDEL CARBS 26 M.M. CHOKES. B.H.P. R.P.M. TIMING ·013 CLCE. IN EX 4·5 2 55 40 INDUCTION DEPN. INS HG | ||