1970 Innocenti J4 vs. 1987 Porsche 959
To start off, 1987 Porsche 959 is newer by 17 year(s). Which means there will be less support and parts availability for 1970 Innocenti J4. In addition, the cost of maintenance, including insurance, on 1970 Innocenti J4 would be higher. At 2,849 cc (6 cylinders), 1987 Porsche 959 is equipped with a bigger engine. In terms of performance, 1987 Porsche 959 (450 HP @ 6500 RPM) has 394 more horse power than 1970 Innocenti J4. (56 HP @ 5500 RPM) In normal driving conditions, 1987 Porsche 959 should accelerate faster than 1970 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 1987 Porsche 959 weights approximately 570 kg more than 1970 Innocenti J4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1987 Porsche 959 is four wheel drive (4WD), it will have significant more traction and grip than 1970 Innocenti J4. In wet, icy, snow, or gravel driving conditions, 1987 Porsche 959 will offer significantly more control. 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, 1987 Porsche 959 (500 Nm @ 5000 RPM) has 417 more torque (in Nm) than 1970 Innocenti J4. (83 Nm @ 2500 RPM). This means 1987 Porsche 959 will have an easier job in driving up hills or pulling heavy equipment than 1970 Innocenti J4.
Compare all specifications:
| 1970 Innocenti J4 | 1987 Porsche 959 | |
| Make | Innocenti | Porsche |
| Model | J4 | 959 |
| Year Released | 1970 | 1987 |
| Engine Position | Front | Rear |
| Engine Size | 1097 cc | 2849 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 56 HP | 450 HP |
| Engine RPM | 5500 RPM | 6500 RPM |
| Torque | 83 Nm | 500 Nm |
| Torque RPM | 2500 RPM | 5000 RPM |
| Engine Bore Size | 64.6 mm | 95.1 mm |
| Engine Stroke Size | 83.7 mm | 67 mm |
| Engine Compression Ratio | 21.5:1 | 8.3:1 |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 880 kg | 1450 kg |
| Vehicle Length | 3720 mm | 4270 mm |
| Vehicle Width | 1540 mm | 1840 mm |
| Vehicle Height | 1380 mm | 1280 mm |
| Wheelbase Size | 2380 mm | 2270 mm |
