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 showing BHP and BMEP for an engine with large versus small valves in a turbulent head.

Identifier  ExFiles\Box 179b\2\  img188
Date  29th November 1932
  
COMPARISON LARGE V SMALL VALVES TURBULENT HEAD
C/R 6.28-1 107 CAMSHAFT E.100863 HEAD E.100871 1 5/8 S.U. CARB
OPEN EX. PISTONS E.100525 FLEXIBLE TYPE
DYNO COUPLED DIRECT TO FLYWHEEL
— 1.200 DIA VALVE
- - - 1.125" "
L.c.c. 3222
EX
IN
8
5
35
42
.020
B.H.P.
B.M.E.P. LBS / □"
R.P.M.
RM{William Robotham - Chief Engineer}* PR 36
  
  


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