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 Phantom III 'D' Series four-port cylinder head and testing requirements.
| Identifier | ExFiles\Box 93\4\ scan0124 | |
| Date | 4th October 1937 | |
| 319. Da.{Bernard Day - Chassis Design} from Rm.{William Robotham - Chief Engineer} c. O.C. c. I.B. c. RHC.{R. H. Coverley - Production Engineer} c. E.{Mr Elliott - Chief Engineer} Dept. Rm{William Robotham - Chief Engineer}7/R.4.10.37. P.III - 'D' SERIES - CYLINDER HEAD WITH FOUR INLET PORTS. Referring to the modifications to the P.III 4-port cylinder head, we did not agree that these could be incorporated on production without test running. We did say that we thought the modifications could be proved out on the test bed without the necessity of running the car 15,000 miles in France. Rm.{William Robotham - Chief Engineer} | ||