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).
Power-output graph for a 4¼ Litre Bentley, comparing an Overhead Camshaft conversion unit to the standard engine.

Identifier  ExFiles\Box 113\5\  scan0217
Date  2nd March 1941 guessed
  
UNIT No: 23.
4¼ LITRE BENTLEY.
POWER- OUTPUT.
OVERHEAD CAMSHAFT CONVERSION UNIT.
S.20.
① O-H-C. ENGINE.
6·5 : 1 COMP: RATIO
OPEN EXHAUST
①a AS ① BUT WITH STD: EXH: SILENCER.
② STANDARD 4¼ LITRE ENGINE
OPEN EXHAUST.
②a AS ② BUT WITH STD: EXH: SILENCER
B.H.P.
B.M.E.P.
R.P.M.
C.T.S
  
  


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