1971 Alfa Romeo Junior vs. 1973 Innocenti J4
To start off, 1973 Innocenti J4 is newer by 2 year(s). Which means there will be less support and parts availability for 1971 Alfa Romeo Junior. In addition, the cost of maintenance, including insurance, on 1971 Alfa Romeo Junior would be higher. At 1,288 cc (4 cylinders), 1971 Alfa Romeo Junior is equipped with a bigger engine. In terms of performance, 1971 Alfa Romeo Junior (86 HP @ 6000 RPM) has 30 more horse power than 1973 Innocenti J4. (56 HP @ 5500 RPM). In normal driving conditions, 1971 Alfa Romeo Junior should accelerate faster than 1973 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 1971 Alfa Romeo Junior weights approximately 90 kg more than 1973 Innocenti J4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1971 Alfa Romeo Junior is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1971 Alfa Romeo Junior. However, in wet, icy, snow, or gravel driving conditions, 1973 Innocenti J4, being front wheel drive (FWD), will offer much better control with better grip. 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, 1971 Alfa Romeo Junior (115 Nm @ 3200 RPM) has 32 more torque (in Nm) than 1973 Innocenti J4. (83 Nm @ 2500 RPM). This means 1971 Alfa Romeo Junior will have an easier job in driving up hills or pulling heavy equipment than 1973 Innocenti J4.
Compare all specifications:
| 1971 Alfa Romeo Junior | 1973 Innocenti J4 | |
| Make | Alfa Romeo | Innocenti |
| Model | Junior | J4 |
| Year Released | 1971 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 1288 cc | 1097 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 86 HP | 56 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 115 Nm | 83 Nm |
| Torque RPM | 3200 RPM | 2500 RPM |
| Engine Bore Size | 74 mm | 64.6 mm |
| Engine Stroke Size | 75 mm | 83.7 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 970 kg | 880 kg |
| Vehicle Length | 3910 mm | 3720 mm |
| Vehicle Width | 1560 mm | 1540 mm |
| Vehicle Height | 1290 mm | 1380 mm |
| Wheelbase Size | 2260 mm | 2380 mm |
