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).
List of modifications and part numbers for various engine components.
| Identifier | ExFiles\Box 169\1\ img021 | |
| Date | 13th June 1929 | |
| (2) RHC{R. H. Coverley - Production Engineer}/FW4/mS13.6.29. Inlet Pipes - L.O.P. E.77653 New Induction Pipe & Bend E.78895-6. Carburetter - L.O.P. E.78397. Carb: Air Intake E.78848-9 to LeC 2659 to suit Vacuum Pump Silencer. Camshaft & Bearings - L.O.P. E.77655 116° Camshaft E.78318. Magneto & Dynamo Drive - L.O.P. E.78944 - LeC 2631. Flexible Dynamo Drive to LeC 2631. Oil Feed Union to Ex.3850. Throttle Gov: & Water P. Drive - L.O.P. E.77657. Idler Gear - L.O.P. E.77658. Spindle for Idler Wheel modified to V.559. C.H.N.S. Idler Gear E.78561. Ignition Governor - L.O.P. E.77659. Governor Housing E.77664 modified for Oil Drain Grooves to V.405. Vacuum Pump - L.O.P. E.78843. Increased Capacity Vacuum Pump using Larger dia: Suction & discharge pipe to drg: E.79167. Water Pump - L.O.P. E.77661 - LeC 2644. Modified Water Pump Gland Nut to LeC 2644. Contd. | ||