Blueprint of a throttle flange joint for 4 1/4 Litre and 3 1/2 Litre engines.
| Identifier | ExFiles\Box 155\4\ scan0134 | |
| Date | 6th December 1937 guessed | |
| 19 4 1/4 LITRE. 3/8" STUDS & NUTS. THESE ENDS ARE SQUASHED IN. 3 1/2 LITRE. 5/16" STUDS & NUTS. THROTTLE FLANGE JOINT. | ||
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).