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).
Condition and dimensions of cylinder bores following a first grind out.
| Identifier | ExFiles\Box 146\3\ scan0090 | |
| Date | 22th September 1936 | |
| A REPORT UPON CONDITION OF CYLINDERS CHASSIS N⁰ B 38 EF JOB N⁰ 35620 DATE 22 - 9 - 36 1ST GRIND OUT MILEAGE 37,114 Kms. ORIGINAL BORES YES CYLINDER BORE DIMENSIONS NOTE DIM'S "AA{D. Abbot-Anderson}" TAKEN AT RT ANGLES TO C' SHAFT. DIM'S "BB" TAKEN PARALLEL TO C' SHAFT. Handwritten notes: NOTE, The AA{D. Abbot-Anderson} & BB measurements taken at the crown were taken .125" below the face of the cylinder Block. Please refer to Sheet B. attached TABLE DATA: CYLINDER | MOUTH (AA{D. Abbot-Anderson}, BB) | CENTRE (AA{D. Abbot-Anderson}, BB) | CROWN (AA{D. Abbot-Anderson}, BB, OVALITY) 1 | 3"2515, 3"251 (NEW) | 3"2525, 3"253 | 3"254, 3"257 2 | 3"251, 3"251 (NEW) | 3"2525, 3"253 | 3"255, 3"256 3 | 3"251, 3"2515 (NEW) | 3"2525, 3"253 | 3"256, 3"2575 (OVALITY: 15) 4 | 3"2515, 3"251 (NEW) | 3"253, 3"253 | 3"255, 3"2605 (OVALITY: 55) 5 | 3"2515, 3"251 (NEW) | 3"2525, 3"2525 | 3"255, 3"256 6 | 3"251, 3"251 (NEW) | 3"2525, 3"2525 | 3"2545, 3"2575 | ||