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 graph showing the effect of increased valve lift on the 'Japan Engine'.

Identifier  ExFiles\Box 13\2\  02-page125
Date  5th August 1931 guessed
  
R.{Sir Henry Royce} P. M.{Mr Moon / Mr Moore}
B.M.E.P.
B.H.P.
INCREASE IN PEAK POWER DUE TO HIGHER LIFT 6 1/2%
STD VALVE LIFT .344
INCREASED VALVE LIFT .395
TIMING .020" TAPPET CL'CE
VALVE TIMING DIAGRAM: IN 43, EX 43, 5, 7
CURVE III
EFFECT OF INCREASED VALVE LIFT
ON JAPAN ENGINE
5.35 C/R TWIN ZENITH 26 m/m CHOKE.
P. II SHORT TYPE SILENCER 2" DOWNTAKE
112° CAMSHAFT ALL TESTS
C.O. CLOSED
  
  


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