The Siata Spring 850 is a convertible/cabriolet with 2 doors and a rear mounted engine which transmits the power through the rear wheels.
The 0.8 litre engine is a naturally aspirated, overhead valve, 4 cylinder that has an output of 36.5 bhp (37 PS/27.2 kW) of power at 5000 rpm, and maximum torque of 55 N·m (41 lb·ft/5.6 kgm) at 3400 rpm.
The engine transmits power to the wheels via a 4 speed manual gearbox.
It weighs a claimed 615 kg at the kerb.
The Siata Spring 850 is claimed to attain a top speed of 130 km/h or 81 mph.
Full specs
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| bodywork | |||
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| Body type | 2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2027 mm | 79.8 inches | |
| Track/tread (front) | 1146 mm | 45.1 inches | |
| Track/tread (rear) | 1212 mm | 47.7 inches | |
| Length | 3548 mm | 139.7 inches | |
| Width | 1379 mm | 54.3 inches | |
| Height | 1199 mm | 47.2 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.75 | ||
| Kerb weight | 615 kg | 1356 lb | |
| Weight distribution | |||
| fuel tank capacity | 30 litres | 6.6 [7.9] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Fiat | ||
| Engine code | |||
| Cylinders | Straight 4 | ||
| Capacity | 0.8 litre 843 cc (51.443 cu in) |
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| Bore × Stroke | 65 × 63.5 mm
2.56 × 2.5 in |
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| Bore/stroke ratio | 1.02 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 8 valves in total |
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| maximum power output (Net) |
37 PS (36.5 bhp) (27.2 kW) at 5000 rpm |
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| maximum torque (Net) |
55 Nm (41 ft·lb) (5.6 kgm) at 3400 rpm |
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| Specific output (Net) |
32.3 kW/litre 43.9 ps/litre 43.3 bhp/litre 0.71 bhp/cu in |
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| Specific torque (Net) |
65.24 Nm/litre
0.79 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 8.6:1 | ||
| Fuel system | |||
| bmep (brake mean effective pressure) | 819.9 kPa (118.9 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 210.75 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 130 km/h (81 mph) | ||
| Power-to-weight ratio | Higher is better 60.17 PS/tonne (1000 kg) 0.06 PS/kg 44.26 kW/tonne (1000 kg) 0.04 kW/kg 59.35 bhp/tonne (1000 kg) 0.06 bhp/kg 0.03 bhp/lb |
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| Weight-to-power ratio | Lower is better 22.6 kg/kW 37.74 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 | rear | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | 9.60 m | ||
| Front suspension | I.TL. | ||
| Rear suspension | I.CS. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | |||
| Tyres rear | |||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | 515 cm2 | ||
| Gearbox | 4 speed manual | ||
| Top gear ratio | |||
| Final drive ratio | |||
| general | |||
| Carfolio.com ID | 85338 | ||
| Production total | |||
| Model code | |||
| RAC rating | 10.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1968 Siata Spring 850 added 2001-08-06. Last modified 2013-02-28. |
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