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).
Test on exhaust valve size modifications.

Identifier  ExFiles\Box 17\6\  Scan133
Date  26th August 1933
  
8760.

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

Hs{Lord Ernest Hives - Chair}/Std.3/MA.26.8.33.

TESTS ON EXHAUST VALVE SIZE.

Please fit Std.P.II E.82758 cylinder head with modified exhaust valves to Hs.{Lord Ernest Hives - Chair}1115 and exhaust valve seatings to suit these valves (bored out to 1.55" dia. instead of 1.70" dia.)
We send you herewith this cylinder head.

Hs{Lord Ernest Hives - Chair}/Std.
  
  


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