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 curve graph comparing the performance of a standard head (EB 222) versus a head with large inlet valves (EB GIS) on a Bentley engine.

Identifier  ExFiles\Box 31\2\  Scan125
Date  29th August 1933 guessed
  
B.H.P
BENTLEY - POWER CURVES.
CURVE 13.
COMPARISON OF HEADS EB 222 (STD)
& EB GIS (LARGE INLET VALVES)
STD HEAD - EB 222
LARGE VALVE
HEAD - EB GIS
TWO 1 5/8 S V CARBS.
R.P.M.
  
  


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