1957 Alfa Romeo Giulietta vs. 1951 Allard J1
To start off, 1957 Alfa Romeo Giulietta is newer by 6 year(s). Which means there will be less support and parts availability for 1951 Allard J1. In addition, the cost of maintenance, including insurance, on 1951 Allard J1 would be higher. At 3,917 cc (8 cylinders), 1951 Allard J1 is equipped with a bigger engine. In terms of performance, 1951 Allard J1 (100 HP @ 3800 RPM) has 29 more horse power than 1957 Alfa Romeo Giulietta. (71 HP @ 6000 RPM) In normal driving conditions, 1951 Allard J1 should accelerate faster than 1957 Alfa Romeo Giulietta. With that said, vehicle weight also plays an important factor in acceleration. 1951 Allard J1 weights approximately 306 kg more than 1957 Alfa Romeo Giulietta. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1951 Allard J1 (305 Nm @ 2500 RPM) has 193 more torque (in Nm) than 1957 Alfa Romeo Giulietta. (112 Nm @ 4250 RPM). This means 1951 Allard J1 will have an easier job in driving up hills or pulling heavy equipment than 1957 Alfa Romeo Giulietta.
Compare all specifications:
| 1957 Alfa Romeo Giulietta | 1951 Allard J1 | |
| Make | Alfa Romeo | Allard |
| Model | Giulietta | J1 |
| Year Released | 1957 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 1290 cc | 3917 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 71 HP | 100 HP |
| Engine RPM | 6000 RPM | 3800 RPM |
| Torque | 112 Nm | 305 Nm |
| Torque RPM | 4250 RPM | 2500 RPM |
| Engine Bore Size | 74 mm | 81 mm |
| Engine Stroke Size | 75 mm | 95.3 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 840 kg | 1146 kg |
| Vehicle Length | 3410 mm | 3690 mm |
| Vehicle Width | 1550 mm | 1480 mm |
| Vehicle Height | 1190 mm | 1510 mm |
| Wheelbase Size | 2260 mm | 2440 mm |
| Fuel Tank Capacity | 71 L | 113 L |
