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 comparing manifold only, cut-out open, and full exhaust systems.

Identifier  ExFiles\Box 13\2\  02-page156
Date  30th November 1931
  
COMPARISON OF MANIFOLD ONLY, C.O OPEN & FULL EXHAUST SYSTEM
P.II COMPLETE SHORT TYPE EXHAUST SYSTEM
114° CAMSHAFT TO E82236 4.65 C/R STD. CYL HEAD. 1.9" VALVE THROAT
MANIFOLD ONLY R.R TWIN CARBS. 1.4" DIA. CHOKES
C.O OPEN
COMPLETE P.II SHORT EXHAUST SYSTEM
FULL EXHAUST SYSTEM
EXHAUST BACK PR.{Percy H. Rose}
D.R.P LBS/SQ IN
C.O. OPEN
EXHAUST BACK PRESS.
Valve Timing Diagram: Ex. 60, 15, IN 55, .013 CLCE
Axes Labels: B.H.P., R.P.M., B.M.E.P LBS/SQ", LBS/D'
  
  


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