Performance graph analysing different exhaust system configurations on a B60 engine.
| Identifier | ExFiles\Box 8\8\ 08-page81 | |
| Date | 29th March 1939 guessed | |
| (S. W. 327) EXHAUST SYSTEM ANALYSIS ON B60 (Nº3 UNIT) WRAITH SYSTEM ECO 872/79/90 WITH BOTH 1 1/2" & 2" TAIL PIPE CONDITION OF TEST STD BY INDN SYSTEM 2-1 1/2" SU CARBS LONG DURATION INLET VALVE TIMING 030 C.LCE TO 6º PTDC I.C.44º PBDC E.O. 37º BBDC E.C. 15º PTDC ORIGINAL DESIGN HEAD WITH MODIFIED THROAT. PD. 190 6.26:1 C.R. SODIUM FILLED EXH. VALVE MOTORINE C OIL ETHYL FUEL LEGEND: ① OPEN EXHAUST ② MANIFOLDS ONLY ③ WITH Y PIECE & DOWNTAKE PIPE ④ WITH FRONT BOX ⑤ WITH REAR SILENCER ⑥ COMPLETE SYSTEM WITH 2" TAIL PIPE ⑦ 1 1/2" AXIS LABELS: BHP (Brake Horsepower) RPM (Revolutions Per Minute) BACK PRESS INS HG (Back Pressure in Inches of Mercury) | ||
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).