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 chart and specification sheet for the 'Japan Unit' engine.
| Identifier | ExFiles\Box 102\5\ scan0077 | |
| 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. TIMING .013 CLCE. B.H.P. R.P.M. B.M.E.P INS HG INDUCTION DEPN IN EX 4-6 2 55 40 | ||