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 for engine firing order, cam arrangement, and inlet valve contour data.

Identifier  ExFiles\Box 21\4\  Scan037
Date  25th February 1919
  
X3500
R.R. 26 10M Bks.) (SE 591 13-3-18). M.P. 189358
ROLLS-ROYCE LIMITED.
INSTRUCTIONS.
To Mr Hives
Order No. Delay box
Customer's No.
Order of firing 1, 5, 3, 6, 2, 4
arrangement of cams, E.I.I.E. I.E.E.I. E.I.I.E.
Contour of Valves
camshaft
Inlet.
0° .542
5° .5425
10° .546
15° .551
20° .559
25° .5745
30° .5955
35° .6215
40° .657
45° .6935
50° .732
55° .766
60° .7835
65° .801
70° .8125
75° .8135
80° .810
85° .8125
90° .8135
95° .810
100° .7975
105° .7715
110° .745
115° .7135
120° .685
125° .6495
130° .623
135° .599
140° .5715
145° .562
150° .553
155° .5505
160° .546
165° .542
170° .541
Signed
This Sheet must be filed on completion of the work.
  
  


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