Hillman Straight-Eight | |
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Overview | |
Manufacturer | Hillman Motor Car Co Ltd |
Model years | 1929, 1930 |
Body and chassis | |
Class | Executive car |
Body style | |
Layout | FR[1] |
Powertrain | |
Engine |
|
Transmission | single plate dry clutch, 4-speed gearbox, Hardy Spicer propellor shaft with metal universal joints is mated with a half-floating spiral bevel driven back axle[2] |
Dimensions | |
Wheelbase |
|
Length | 175 in (4,445 mm)[4] |
Width | 68.25 in (1,734 mm)[4] |
Kerb weight | |
Chronology | |
Predecessor | none |
Successor | Hillman Vortic 8 |
Hillman Vortic 8 | |
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Overview | |
Manufacturer | Hillman Motor Car Co Ltd |
Production | 1931 |
Layout | |
Configuration | straight 8-cylinder[1] |
Displacement | 2,620 cc (159.9 cu in)[1] |
Cylinder bore | 63 mm (2.48 in)[1] |
Piston stroke | 105 mm (4.13 in)[1] |
Cylinder block material | cast iron, aluminium alloy die cast pistons, 5-bearing crankshaft with a vibration damper at the front[2] |
Cylinder head material | cast iron |
Valvetrain | overhead valves with double springs operated by pushrods; timing by chain; inlet manifold square section with 4 branches; 5-branch exhaust manifold with a double outlet[2] |
Combustion | |
Fuel system | carburettor fed from vacuum tank on dash, main reservoir 12 gallons at back of car[2] |
Fuel type | petrol[2] |
Oil system | forced. pump is outside sump and pressure may be adjusted[2] |
Cooling system | water, impeller combined with fan, true honeycomb radiator (protected by a shell), thermostatically-controlled shutters[2] |
Output | |
Power output | |
Chronology | |
Predecessor | Hillman Straight Eight |
Successor | Hillman Wizard 75 |
The Hillman Straight Eight and its successor the Hillman Vortic were moderate priced mid-sized 20 tax-horsepower executive cars made by Hillman from 1929 to 1930. The lowest priced eight-cylinder car on the market the car was scarcely in full production when sales were hit by the onset of the Great Depression.
This pair of cars has been described as "the complete lemon". The straight eight engine was subject to bearing failure. The name was changed to Vortic and some modifications made including a silent third gear but it was to try to sell off unwanted stock. They were still offered in 1932.[6]
The straight eight was replaced in Hillman's catalogue in April 1931 by their six-cylinder Wizard 65 and 75.
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