The Proto Spirra V8 is a coupé with 2 doors and a mid mounted engine which delivers its power to the rear wheels.
Its engine is a turbocharged petrol, 4.6 litre, double overhead camshaft 8 cylinder with 4 valves per cylinder. This powerplant produces 320 bhp (324 PS/239 kW) of power at 6000 rpm, and maximum torque of 427 N·m (315 lb·ft/43.5 kgm) at 4750 rpm.
This power is supplied to the wheels by means of a 6 speed manual gearbox.
Claimed weight at the kerb is 1090 kg.
The Proto Spirra V8 is said to be able to achieve a maxiumum speed of 280 km/h (174 mph).
Full specs
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| bodywork | |||
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| Body type | 2 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2580 mm | 101.6 inches | |
| Track/tread (front) | 1546 mm | 60.9 inches | |
| Track/tread (rear) | 1638 mm | 64.5 inches | |
| Length | 4238 mm | 166.9 inches | |
| Width | 1930 mm | 76 inches | |
| Height | 1175 mm | 46.3 inches | |
| Ground clearance | 140 mm | 5.5 inches | |
| length:wheelbase ratio | 1.64 | ||
| Kerb weight | 1090 kg | 2403 lb | |
| Weight distribution | |||
| fuel tank capacity | 71 litres | 15.6 [18.8] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | turbocharged petrol | ||
| Engine manufacturer | |||
| Engine code | |||
| Cylinders | V 8 | ||
| Capacity | 4.6 litre 4601 cc (280.77 cu in) |
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| Bore × Stroke | 90.2 × 90 mm
3.55 × 3.54 in |
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| Bore/stroke ratio | 1 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 32 valves in total |
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| maximum power output | 324 PS (320 bhp) (239 kW) at 6000 rpm |
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| maximum torque | 427 Nm (315 ft·lb) (43.5 kgm) at 4750 rpm |
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| Specific output | 51.9 kW/litre 70.5 ps/litre 69.6 bhp/litre 1.14 bhp/cu in |
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| Specific torque |
92.81 Nm/litre
1.12 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | |||
| Fuel system | |||
| bmep (brake mean effective pressure) | 1166.2 kPa (169.1 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 575.13 cc | ||
| Aspiration | Turbo | ||
| Compressor | |||
| Intercooler | |||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 4.6 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 280 km/h (174 mph) | ||
| Power-to-weight ratio | Higher is better 297.66 PS/tonne (1000 kg) 0.3 PS/kg 218.92 kW/tonne (1000 kg) 0.22 kW/kg 293.58 bhp/tonne (1000 kg) 0.29 bhp/kg 0.13 bhp/lb |
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| Weight-to-power ratio | Lower is better 4.57 kg/kW 7.63 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 | mid | ||
| Engine layout | transverse | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | I.DW. | ||
| Rear suspension | I.DW. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 225/40 x 18 | ||
| Tyres rear | 255/35 x 18 | ||
| Brakes F/R | VeDi/VeDi | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 6 speed manual | ||
| Top gear ratio | |||
| Final drive ratio | |||
| general | |||
| Carfolio.com ID | 129613 | ||
| Production total | |||
| Model code | |||
| RAC rating | 40.4 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2005 Proto Spirra V8 added 2005-06-16. Last modified 2013-02-28. |
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