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 chart for a C18 unit with camshaft E57177, showing performance with a larger carburetter under various exhaust configurations.

Identifier  ExFiles\Box 179\2\  img044
Date  4th December 1931
  
POWER OUTPUT C18 UNIT CHINA
CAMSHAFT E 57177 (110.5°) C/R 5.74
STANDARD 15% LARGER R.R. CARBURETTER

LEGEND:
① OPEN EXHAUST
② C.O. OPEN
③ COMPLETE EXHAUST SYSTEM & DOWNTAKE

VALVE TIMING DIAGRAM:
Ex
In
6
40.5
43.7
OZO CLCE

AXIS LABELS:
COMP. PR.{Percy H. Rose} LBS/SQ"
R.P.M.
LATE TIMING
  
  


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