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Overview | |
Manufacturer | Hillman Motor Car Co Ltd |
Production |
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Model years | 1931 to 1938 |
Body and chassis | |
Class | Executive car |
Body style | Wizard 75, 20/70 and Hawk:
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Layout | FR |
Powertrain | |
Engine | |
Transmission | engine, single dry-plate clutch and 4-speed gearbox with central gear lever (all mounted as a unit); open propeller shaft with metal joints; half-floating spiral bevel driven rear axle with banjo case[5] |
Dimensions | |
Wheelbase |
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Length | |
Width |
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Kerb weight | |
Chronology | |
Predecessor | Hillman Vortic |
Successor | Humber Snipe |
Hillman 20 horsepower | |
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Overview | |
Manufacturer | Hillman Motor Car Co Ltd |
Layout | |
Configuration | Straight 6-cylinder[5] |
Displacement |
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Cylinder bore | 75 mm (2.95 in)[5] |
Piston stroke |
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Cylinder block material | cast iron; 4-bearing crankshaft; pistons have alloy heads and steel skirts[5] |
Cylinder head material | cast iron; detachable, only connection is to radiator[5] |
Valvetrain | side valves operated by gear-driven camshaft[5] |
Compression ratio | 5.1:1[5] |
Combustion | |
Fuel system | air cleaner, hot spot for mixture, mechanical fuel pump driven from camshaft supplies from rear tank, 4-branch inlet and 3-branch exhaust manifolds[5] |
Management | dynamo with water pump driven by chain, coil ignition[5] |
Fuel type | petrol[5] |
Oil system | forced by pump, oil filter provided[5] |
Cooling system | water pump, thermostat, fan (with adjustable fan belt), honeycomb radiator within V-front shell with chromium plated centre bar[5] |
Output | |
Power output |
The Hillman Wizard 75, Hillman Twenty 70, Hillman Hawk and their long wheelbase variants Hillman Seven Seater and Hillman 80 models were a series of 20 horsepower (RAC rating) medium priced 5-7 seater executive cars made by Hillman during the 1930s.
Built at a time when body and chassis were quite separate structures Hillman's 20 horsepower chassis was given three different body shapes in five years and a grand total of five different names if the long wheelbase cars are included. The same body shapes and chassis were used for Hillman's 16 horsepower offering though that smaller engine was not offered with their long wheelbase cars.
Towards the end of the 1930s the badges of the current models were changed by the Rootes brothers to Humber Snipe.
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