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).
Specification table for small and large four-cylinder engines, including capacity, horsepower, and tax.
| Identifier | ExFiles\Box 117\3\ scan0270 | |
| Date | 24th January 1941 | |
| 8 Cont'd.{John DeLooze - Company Secretary} Rm.{William Robotham - Chief Engineer}1/ML.24.1.41. SMALL FOURS. FITTED IN SILVER RIPPLE. Cu: Ins. Litres. R.A.C.h.p. Tax @ £1.5.0. 4-cyl: (57 x 100) 2.244 x 3.937 62 1.021 8 £10.0.0. 4-cyl: (63.5 x 100) 2.5 x 3.937 77 1.267 10 £12.10.0. 4-cyl: (69.5 x 100) 2.735 x 3.937 92 1.515 12 £15.0.0. LARGE FOURS. FITTED IN ROLLS ROYCE. 4-cyl: (75) 2.952 x 4.5 123.4 2.022 13.95 £17.10.0. 4-cyl: 3.25 x 4.5 149 2.437 16.9 £21.5.0. 4-cyl: 3.5 x 4.5 173 2.838 19.6 £25.0.0. 4-cyl: 3.75 x 4.5 198 3.256 22.5 £28.15.0. It would be uneconomical to have two entirely different basic four cylinder engines in production, were not the large one made from pieces common to the senior range of engines, to a great extent. - Continued - | ||