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).
The capacities of combustion chambers for B.5 and Y.4B.B units.
| Identifier | ExFiles\Box 86\1\ scan0170 | |
| Date | 31th July 1935 | |
| 31.7.35. Capacities of Combustion Chambers on B.5 and Y.4B.B Units. Ex. B.5 Cylinder Head now fitted on Y.4B.B No. 1. 99 c.cs. No. 2. 102 " No. 3. 101.6 " No. 4. 102.4 " No. 5. 103.2 " No. 6. 98.4 " Ex. Y.4B.B. Cyl.Head. now fitted on B.5. 97.6 c.cs. 99 " 96 " 97.8 " 96.4 " 96 " | ||