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 modified parts fitted to car 27-EX.
| Identifier | ExFiles\Box 19\1\ Scan180 | |
| Date | 17th February 1932 | |
| PN.{Mr Northey} From Hs.{Lord Ernest Hives - Chair} X7170 Hs.{Lord Ernest Hives - Chair}2/MJ.17.2.32. 27-EX. Modified parts fitted to this car are as follows:- (1) High compression 5.25:1 (2) High lift camshaft. (3) Standard S.U. carbs. (4) No governor control. (5) No starter carburetter. (6) Stronger valve springs. (7) Modified gearbox. (8) Petrol pump R.R. (9) Standard axle ratio. (10) Standard Springs. Hs.{Lord Ernest Hives - Chair} | ||