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).
Instructions detailing specifications for a Delage engine cylinder block, valves, and pistons.

Identifier  ExFiles\Box 21\4\  Scan027
Date  12th February 1919
  
R.R. 20 10M Bks.) (SR 591 13-3-18). M.P. 189358
ROLLS-ROYCE LIMITED.
INSTRUCTIONS.
To Mr Hives
Order No.
Customer's No.
X3500
12/2/1919
Delage Engine
cylinder block.
Dia of Water outlet 1 1/16"
Dia of Inlet & Exhaust ports 1 5/32"
Valves
Dia of head 1 1/2" stem 7/16"
length overall 6.450, angle of seat 35°
Valve spring length 2 9/16" 10 coils
compressed to 2 1/8" when in position
63 3/4 lbs fully compressed
22 lbs when compressed 1/2"
Dia of wire 13/64"
Weight of Valve 3 1/4 ozs spring 1 1/4 ozs
Piston
Weight without gudgeon pin or rings 14.5 ozs
Weight of gudgeon pin 2.5 ozs
Signed
This Sheet must be filed on completion of the work.
  
  


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