Rover 20
The Rover 20 was a new medium sized car announced by Rover in June 1907. It was a production version of the car which won the Isle of Man Tourist Trophy Race in 1906. However artillery wood wheels were fitted instead of the (still recommended) wire wheels used in the race and the longer wheelbase allowed the engine to be kept out of the passenger area. The prototype's engine came back beneath the petrol tank.
| Rover 20 | |
|---|---|
Tourer first registered December 1907 | |
| Overview | |
| Manufacturer | Rover |
| Production | 1907–1910 |
| Model years | 1908–1910 |
| Body and chassis | |
| Body style |
|
| Layout | FR |
| Powertrain | |
| Engine | 3,251 cc (198.4 cu in) Straight-4 |
| Dimensions | |
| Wheelbase |
|
| Length | 156 in (3,962 mm) |
| Width | 63 in (1,600 mm) |
| Kerb weight | Chassis 17 cwt, 1,904 lb (864 kg) |
| Rover 20hp | |
|---|---|
engine's near side | |
| Overview | |
| Manufacturer | Rover |
| Layout | |
| Configuration | straight 4-cylinder |
| Displacement | 3,251 cc (198.4 cu in) |
| Cylinder bore | 97 mm (3.8 in) |
| Piston stroke | 110 mm (4.3 in) |
| Cylinder block material | cast iron, en bloc, four separately cast cylinders |
| Cylinder head material | in unit with blocks |
| Valvetrain | side valves |
| Combustion | |
| Fuel system | Rover (pat.) carburettor gravity fed from fuel tank in scuttle |
| Management | Bosch H T magneto or accumulator |
| Fuel type | petrol |
| Oil system | splash |
| Cooling system | water: flattened tube radiator, water pump, fan |
| Output | |
| Power output |
|
| Chronology | |
| Predecessor | Rover 16 but 20 has been bored out by 2mm |
With a few breaks Rover kept a premium 20 tax horsepower car in their catalogue until the outbreak of war in 1939. In the early 1950s an equivalent model returned to the market, the 2.6-litre Rover 90 and later Rover's 3-litre.
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