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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).
Instruction to re-fit a Phantom II Cylinder Head with original valve springs and guides before re-assembly.

Identifier  ExFiles\Box 14\3\  Scan087
Date  9th August 1933
  
X70550.

To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Std. Hs{Lord Ernest Hives - Chair}/Std.5/KT.9.8.33.

Please have P.II Cyl. Head E.83906 at present in shop being fitted with lightened inlet valves, re-fitted with E.81550 valve springs, E.82456 inlet valve guides, and E.83539 exhaust valve guides, before re-assembly. These parts were fitted to this head before double taper valve springs were fitted.

Hs{Lord Ernest Hives - Chair}/Std.
  
  


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