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Alfa Romeo 20/30 HP ES Sport, 1921
| Manufacturer | Alfa Romeo |
| Model | 20/30 HP ES Sport |
| Year of production | 1921 |
| Start of production | 1920 |
| End of production | 1922 |
| Body type |
faeton |
| Number of doors | 4 |
| Number of seats | 5 |
| Engine position |
front |
| Drive wheel |
rear |
| Fuel |
petrol |
| Number of cylinders |
inline 4 |
| Cooling |
liquid |
| Capacity | 4250 ccm, 258.1 cu-in |
| Bore | 102.0 mm, 4.016 in |
| Stroke | 130.0 mm, 5.118 in |
| Compression ratio | 4.5:1 |
| Valve Gear |
SV |
| Valves per cylinder | |
| Fuel system |
carburator, 1 x Zenith |
| Aspiration |
normal |
| Max power [kW / PS / hp] |
49 / 67 / 66 at 4200 rpm |
| Max torque [Nm / ft-lb] |
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| Total power (hybrid) | |
| Total torque (hybrid) |
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| Gearbox | M4 |
| Gearbox (option) | |
| Wheelbase | 2800 mm, 110.2 in |
| Front track | 1450 mm, 57.1 in |
| Rear track | 1450 mm, 57.1 in |
| Length | 4100 mm, 161.4 in |
| Width | 1780 mm, 70.1 in |
| Height | 1700 mm, 66.9 in |
| Weight | 1200 kg, 2646 lb |
| Maximum speed |
130 km/h, 81 mph |
| 0-100 km/h | |
| Standing km | |
| Foto: archiv Auta5P |
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