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).
Blueprint for a modified Bentley Cylinder Head to improve airflow.
| Identifier | ExFiles\Box 86\1\ scan0023 | |
| Date | 14th July 1933 | |
| X219. To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from E/JNR.{Charles L. Jenner} E/JNR.{Charles L. Jenner}1/HP.14.7.33. Bentley Cylinder Head. We send you herewith blueprint: LeC.3571 showing the modified shape to the inlet bends of the cylinder head, to improve the flow of air through the inlet valve. E/JNR.{Charles L. Jenner} | ||