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 Phantom ll twin carburetters.
| Identifier | ExFiles\Box 13\3\ 03-page340 | |
| Date | 3rd September 1931 | |
| Y7080. To RHC.{R. H. Coverley - Production Engineer} From Hs.{Lord Ernest Hives - Chair} Hs.{Lord Ernest Hives - Chair}2/MJ.3.9.31. List of modifications for Phantom ll twin carburetters. (1) Variable valve sleeve E.82375 to have 3.066 diam. holes. (2) Diffuser body E.81572 to V.1057 reduction in diam. from .495 to .475. (3) Diffuser outer tube E.81573 altered to V.1100 position of air bleed holes. (4) Throttle spindle bushes to be ground out flush with carburetter bore in order to minimise leaks past throttles. Throttles to be a good fit. (5) Throttle spindle (E.81592) slightly altered for fitting of round throttles and extension for working accelerating pump controls. Spindle is modified to V.1032. (6) General accel. pump control arrgt. to V.1031. (7) Acceleration pump control pedestal requires alterations to suit V.1031. Hs.{Lord Ernest Hives - Chair} | ||