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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).
Summary report on engine pinking and front axle control issues, detailing cases and resolutions.

Identifier  ExFiles\Box 146\2\  scan0268
Date  30th June 1937 guessed
  
( 9 )

18. ENGINE - PINKING.

3.1/2 Litre 4.1/4 Litre Total.
June Quarter
C.C. 5 5
C.P.
Previous Quarter
C.C.
C.P.
Six Months 5 5

B-226-GA. 18.358 Kms.
Plugged up 8 water holes in cylinder head as per blue paint No EB.2929.
Owner paid for an R.10 engine clean.

B-107-GP. 15.223 Kms.
As above.

B-27-HM.{Capt. W. Hallam - Head Repairs} 6.431 Miles.
Re-set ignition and carburetter.

B-154-GA. 12.903 Kms.
Plugged up 8 water holes in cylinder head.
Owner paid for an R.10.

B-106-HK.{Col. T. Harker - Sales} 16.627 Kms.
As above.

During an R.10 or R.20 engine clean, we are going to make it a standard practice of plugging up 8 water holes as above.

---------------------

19. FRONT AXLE CONTROL
NOISY OR SLACK.
RE-ADJUSTED CONTROLS.
NO PARTS CHANGED.

June Quarter
C.C. 3 4 7
C.P. 1 1
Previous Quarter
C.C. 2 3 5
C.P. 4 4
Six Months 6 11 17

B-174-DG. 31.241 Kms. Re-adjusted controls
B- 72-HK.{Col. T. Harker - Sales} 5.271 Kms. " "
B- 71-BL. 36.572 Kms. " "
B- 61-GP. 11.322 Kms. " "
B- 59-DX. 44.072 Kms. " "
B-192-GA. 14.022 Kms. " "
B-260-GA. 28.880 Kms. " "
B-101-EJ. 31.871 Kms. " "
Charged owner.
  
  


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