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).
Request to modify a Phantom II cylinder head for small 30° valves and high lift rockers.
| Identifier | ExFiles\Box 14\3\ Scan066 | |
| Date | 21th August 1931 | |
| 87050. To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}13/MJ.21.8.31. PHANTOM 11 CYLINDER HEAD. We wish to run the cylinder head on which you have fitted the small 30° valves in conjunction with high lift rockers. Will you please therefore modify the valve guides and valve spring washers to the accompanying drawings. Will you also please fit inner valve springs to E.37610. Hs{Lord Ernest Hives - Chair}/H.Grylls. Att: V.1128/V.1126/V.1127. | ||