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).
Petrol consumption data and specifications for a 4-cylinder engine.
| Identifier | ExFiles\Box 126\3\ scan0169 | |
| Date | 4th June 1941 | |
| -cont'd- - 3 - PETROL CONSUMPTION AT CONSTANT SPEEDS. 20 MPH -- 50.0 MPG 30 " -- 54.0 " 40 " -- 49.8 " 50 " -- 44.4 " Average over 170 mile run - 38 MPG. Average Consumption over 500 miles is 35 MPG. SPECIFICATION. No. of Cylinders 4 RAC. Rating - 8.05 HP. Bore 57 m/m Oil Capacity - 6 pints Stroke 90 m/m Cooling Capacity - 16 pints Total Cyl Capacity 918 cc's Radiator Dimension - 17⅜" x 14½" x 2". Petrol Tank 5½ Galls Firing Order - 1, 3, 4, 2. Main Bearings 3 Three bearing camshaft driven by Duplex roller chain. Aluminium Alloy Pistons Cooling Thermo-syphon & Fan tin plate - split skirts. Pressure Gear Pump forces S.U. Electric Petrol Pump oil to all main, big end Battery - 6 Volt and Camshaft bearings. S.U. Carburetter. Hardy Spicer Prop: Shaft. Rear Axle. Three-quarter floating type with spiral bevel final reduction gears. Brakes. Fully compensated Lockheed Hydraulic foot brakes. (continued) | ||