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).
Power-output graph for a 3½ Litre Bentley engine under competition work conditions.
| Identifier | ExFiles\Box 90a\3\ Scan019 | |
| Date | 16th January 1935 | |
| 3½. LITRE BENTLEY POWER-OUTPUT COMPETITION WORK G162 16-1-35 B.4 UN.T SPEC. RAC/NSC. 6/3C. 11-1-35 B.H.P. B.M.E.P R.P.M. GTS ① COMP. RATIO 9.4 : 1 (Ex. 5392 MOD HS.{Lord Ernest Hives - Chair}527) IN. VALVE 1.500 DIA EX " 1.200 " STD. CAMSHAFT. EB.1085 (1139) STD. INDN. SYSTEM (NO AIR SILENCER) "AEROLITE" PISTONS (G.4) CYL. BLOCK .002 OVERSIZE FUEL 50% D.T.D. 230 50% BENZOL ② COMP. RATIO 9.4 : 1 (Ex 1604) IN. VALVE 1.500 DIA EX " 1.200 " OTHERWISE AS ① ③ CYL HEAD AS ① 1.300 DIA EX VALVE OTHERWISE AS ① ④ CYL HEAD AS ③ FUEL 10% "680" 90% DTD. 224 4cc's LEAD PER GAL. OTHERWISE AS ① ⑤ CYL. HEAD AS ③ FUEL 20% "680" 50% BENZOL 30% METHANOL 2cc's LEAD PER GAL. ⑥ CYL. HEAD AS ③ FUEL 20% "680" 60% BENZOL 20% METHANOL 2cc's LEAD PER GAL. MAX. MAN. PIPE DEPN = 2.05" Hg. @ 4500 RPM. FILE IN HALLS CAR FILE | ||