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 proposed design alterations for the Phantom III engine for a 15,000 miles test car.
| Identifier | ExFiles\Box 91\1\ scan0549 | |
| Date | 23th May 1936 | |
| Da{Bernard Day - Chassis Design}/Mc.S.2/G.23.5.36. LIST OF DESIGN ALTERATIONS PROPOSED FOR PHANTOM 111 ENGINE FOR THE NEXT 15,000 MILES TEST CAR FOR SERIES 'E' PRODUCTION. DESIGN NUMBER | PARTS AFFECTED | REMARKS. --- E.CD.284 | Crankshaft, Crankcase and Bearings, Connecting Rod big end bushes. | Crankshaft with increased area bearings and Packard type balance weights. --- E.CD.296 | Oil Temperature Regulator, Crankcase top half and oil Fittings. | Deletion of Oil Temperature Regulator. --- E.CD.551 | Crankcase top half, dynamo and water pump drive, water connections, wheelcase. | Speed of dynamo and water pump increased to 1 1/2 times engine speed. --- E.CD.586 | Water Pump Drive. | Flexible Water Pump Coupling. --- E.CD.590 | Pressure Oil Filter, Oil Pump, Oil Relief Valves, and Oil Piping, also crankcase top half. | Pressure Oil Filter is replaced with A.C. bypass filter, Oil Pump and Relief Valves are altered to clear the Wraith type steering gear. --- E.CD.592 | Exhaust Fittings and Chassis lubrication. | Lubricated spherical supports for exhaust system. A later design will be made showing the Wraith type rubber supports replacing the spherical ones altogether. --- E.CD.603 | Exhaust Fittings. | Modifications to exhaust downtake pipe to clear revised side steering tube and modified exhaust pipe support to clear revised starter motor. | ||