Performance comparison graph for a B.60 No. 3 unit 6-cylinder head.
| Identifier | ExFiles\Box 132\4\ scan0229 | |
| Date | 26th May 1939 guessed | |
| B.60 No 3 UNIT B.60 CYL. HEAD COMPARISON. S.101 CAMSHAFT E.B. 4332 VALVE TIMING. I.O. 9° A.T. I.C. 49° A.B. E.O. 27° B.B. E.C. 11° A.T. PISTONS: AEROLITE (FLUSH TOP) INDN. SYSTEM. 2 - 1 1/2" S.U.'S ON 1'-6" PIPE. ① CYL. HEAD (F.B. 4706) SLOPING VALVE HEAD (SHORT COMB. CHAMBER) CR {Mr Cra’ster / Mr Chichester} = 6.9:1 ② AS ① NON-DETN. TEST BED EXH. SYSTEM. (REDLINE) ③ OPEN EXH. - B.H.P. B.H.P. & B.M.E.P. IGNITION ADVANCE. Ⓐ MIN. ADV. FOR MAX. POWER. Ⓑ NON-DETN. LINE. IGN. ADV. B.T.D.C. | ||
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).