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).
Modifications to the inlet valve and cylinder head for 'Bensport' power output.
| Identifier | ExFiles\Box 86\1\ scan0022 | |
| Date | 21th June 1933 | |
| x 219. To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}2/KT. 21.6.33. BENSPORT POWER OUTPUT. We send you herewith a sketch of modifications to the inlet valve and cylinder head suggested by Lr.{Mr Ellor} to obtain better volumetric efficiency. Will you please put in hand a head and valves to the attached Hs.{Lord Ernest Hives - Chair}1045. We shall adjust the compression ratio by suitable gaskets. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||