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).
Confirming a request to test the fitment of exhaust valves into a Phantom II cylinder head.
| Identifier | ExFiles\Box 14\3\ Scan080 | |
| Date | 20th June 1932 | |
| Y7050. To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}3/MJ.20.6.32. PHANTOM 11 CYLINDER HEAD. This is to confirm asking you to see if it is possible to fit exhaust valves E.100087, throat dia. 1.125, in place of the inlet valves on the cylinder head which has just been removed from the test bed. We do not mind what material the inserts are and tests on the head will be confined to the bench with a view to deciding what is the optimum size of the inlet valve. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||