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).
List of modifications for the large Phantom II carburetter.
| Identifier | ExFiles\Box 13\4\ 04-page121 | |
| Date | 9th March 1933 | |
| X7080 RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}18/KT.9.3.33. Will you please incorporate the following modifications in the large Phantom II carburetter (Lec.3137) at present being built. (1) (V.1494) modification to Diffuser body. (2) (V.1509) modification to Taper needle valve. (3) (V.1507) Floatchamber vent extension pipe. (4) Main jet (E.83379) orifice increased from .150 diameter to .172 diameter. (5) Original piston (E.83354) to be fitted. Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} | ||