The Armstrong Siddeley Sapphire 346 is a saloon (sedan) with 4 doors and a front mounted engine which transmits the power through the rear wheels.
It's powered courtesy of a naturally aspirated engine of 3.4 litre capacity. This powerplant features overhead valve valve gear, 6 cylinder layout, and 2 valves per cylinder. It develops 150 bhp (152 PS/112 kW) of power at 5000 rpm.
The engine drives the wheels via a 4 speed manual transmission.
The quoted kerb weight is 1575 kg.
Top claimed speed is 161 km/h, or 100 mph.
Full specs
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| bodywork | |||
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| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2896 mm | 114 inches | |
| Track/tread (front) | |||
| Track/tread (rear) | |||
| Length | 4902 mm | 193 inches | |
| Width | 1830 mm | 72 inches | |
| Height | 1600 mm | 63 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.69 | ||
| Kerb weight | 1575 kg | 3472 lb | |
| Weight distribution | |||
| fuel tank capacity | |||
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | 2.32 m² | ||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | |||
| Engine code | |||
| Cylinders | Straight 6 | ||
| Capacity | 3.4 litre 3435 cc (209.617 cu in) |
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| Bore × Stroke | 90 × 90 mm
3.54 × 3.54 in |
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| Bore/stroke ratio | 1 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 12 valves in total |
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| maximum power output | 152 PS (150 bhp) (112 kW) at 5000 rpm |
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| maximum torque | |||
| Specific output | 32.6 kW/litre 44.3 ps/litre 43.7 bhp/litre 0.72 bhp/cu in |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 7:1 | ||
| Fuel system | 2 St carbs | ||
| bmep (brake mean effective pressure) | |||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 572.5 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | 8.9 s | ||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | 19.7 s | ||
| Standing kilometre | |||
| Maximum speed | 161 km/h (100 mph) | ||
| Power-to-weight ratio | Higher is better 96.56 PS/tonne (1000 kg) 0.1 PS/kg 71.02 kW/tonne (1000 kg) 0.07 kW/kg 95.24 bhp/tonne (1000 kg) 0.1 bhp/kg 0.04 bhp/lb |
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| Weight-to-power ratio | Lower is better 14.08 kg/kW 23.52 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | I.CS.W. | ||
| Rear suspension | LA.SE. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | |||
| Tyres rear | |||
| Brakes F/R | |||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 4.09 | ||
| general | |||
| Carfolio.com ID | 49379 | ||
| Production total | |||
| Model code | |||
| RAC rating | 30.1 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1953 Armstrong Siddeley Sapphire 346 added before December 1995. Last modified 2013-02-28. |
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