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).
Alteration note for a B40 3.500 Bore engine's crankcase and cylinders.

Identifier  ExFiles\Box 132\3\  scan0129
Date  21th March 1940
  
To RM.{William Robotham - Chief Engineer}
118/RE
File
1117
21. MARCH 1940.
B40 3.500 BORE
SECTION 5000
RE 112. CRANKCASE & CYLINDERS.
ALTERATION
① C'BORE ADDED IN TIMING GEAR STUD HOLES.
② SHAPE OF WATER GALLERY HOLE ALTERED.
③ VALVE POCKET SHOWN MACHINED.
REASON
① TO FACILITATE FITTING OF STUDS.
② TO CONFORM TO OTHER C'CASES.
③ DUE TO CASTING BUILDING UP.
NO ALTN TO PATTERN.
NeG Shaw
  
  


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