Austin 12/4
The Austin Light Twelve-Four is a car that was produced by Austin from 1933 until 1939. It was replaced in 1939 by a completely new car also called the Austin 12 which kept the same engine. The "12" in the name referred to the taxation horsepower, a British rating which controlled the annual taxation payable to use the car on the road.
| Light Twelve-Four Twelve-Four Twelve | |
|---|---|
Austin Twelve New Ascot shape announced 11 August 1936 | |
| Overview | |
| Manufacturer | Austin |
| Production | 1933–1939 71,654 produced |
| Body and chassis | |
| Body style | saloon, tourer, estate car, van |
| Powertrain | |
| Engine | 1535 cc Straight-4 |
| Transmission | in one unit with the engine: single-plate clutch, 4-speed centrally controlled gearbox with synchromesh on 2, 3 & top.Three quarter floating rear axle |
| Dimensions | |
| Wheelbase | 106 in (2,700 mm) track 4' 2", 50 in (1,300 mm) |
| Length | 154 in (3,900 mm) |
| Width | 60 in (1,500 mm) |
| Chronology | |
| Predecessor | Austin 12 hp ("Heavy" 12) |
| Successor | Austin 12 (1939 model) |
| Light Twelve-Four 1535 cc Eleven.Nine | |
|---|---|
| Overview | |
| Manufacturer | Austin |
| Layout | |
| Configuration | Straight 4-cylinder |
| Displacement | 1,535 cc (94 cu in) |
| Cylinder bore | 69.3 mm (2.73 in) |
| Piston stroke | 101.6 mm (4.00 in) |
| Cylinder block material | cast iron |
| Cylinder head material | detachable, pistons are aluminium |
| Valvetrain | side-by-side valves |
| Combustion | |
| Fuel system | downdraught carburettor supplied by pump from tank at rear of the car. Contents gauge on instrument panel |
| Fuel type | petrol |
| Oil system | forced lubrication by gear wheel pump to all crankshaft bearings, camshaft and big end bearings |
| Output | |
| Power output | 24 bhp (18 kW; 24 PS) @2,400 rpm 28 bhp (21 kW; 28 PS) @3,000 rpm Tax horsepower 11.9 |
| Chronology | |
| Successor | Austin Twelve 1535 cc |
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