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 new details for various engine components and their associated part numbers.
| Identifier | ExFiles\Box 169\1\ img185 | |
| Date | 22th June 1931 | |
| -3- RHC{R. H. Coverley - Production Engineer}/WSCS/IS.22.6.31. Torque Re-Action Dampers to IOP.LeC.2911. The following New details fitted to suit Diamond Engine Mounting to LeC.2911. E.82248 Friction Plates. E.82249-50 Damper Arms. Water Connections to IOP.E.78995 - LeC.2911-5. The following New details fitted to suit Engine Diamond Mounting to LeC.2911-15. E.82257 Outlet Connection - Radiator. E.82286 Arrgt: Bottom Water Pipe. Oil Fittings to IOP.E.80669. E.79864 Oil Connection. Oil Pipe to Dynamo Drive Gears - modified as shown on Scheme 1480 to suit A.C.Petrol Pump. Oil Filter to IOP.E.80689. Oil Filler to IOP.E.78965. Oil Level Indicator to IOP.E.77669. Auto Kleen Filter to IOP.E.80670 - LeC.2800. Oil Relief Valve to IOP.E.78889 - LeC.2791 - Sch:1247-R.{Sir Henry Royce} Wire Fittings to IOP.E.77671. Fan to IOP.E.79092. Starting Carburetter to IOP.E.77679. E.81912 Jet Nozzle, and E.81913 Needle giving Fixed Maximum restriction. -cont'd- | ||