Rolls-Royce Archives
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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 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.
  
  


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