Recommended flywheel timing markings for the B.V. model.
| Identifier | ExFiles\Box 98\5\ scan0032 | |
| Date | 6th July 1939 | |
| γ.407. To By {R.W. Bailey - Chief Engineer} /NS. {Norman Scott} from Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} c. By {R.W. Bailey - Chief Engineer} /CS. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} 2/MH. {M. Huckerby} 6.7.39. B.V. TIMING DIAGRAM. Further to your enquiry regarding the flywheel timing markings for production B.V. we recommend the following as being the most satisfactory - Inlet Opens 3° Past TDC. Inlet Closes 48° Past BDC. Exhaust Opens 40° Before BDC. Exhaust Closes 3° Past TDC. Above with .030 tappet clearance. The original diagram for the above camshaft EB.3466 is shown on EB.3241. Regarding the ignition marking, this should be "IGN" at TDC. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} | ||
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).