1950 Allard J1 vs. 1953 Armstrong Siddeley Sapphire
To start off, 1953 Armstrong Siddeley Sapphire is newer by 3 year(s). Which means there will be less support and parts availability for 1950 Allard J1. In addition, the cost of maintenance, including insurance, on 1950 Allard J1 would be higher. At 3,622 cc (8 cylinders), 1950 Allard J1 is equipped with a bigger engine. In terms of performance, 1953 Armstrong Siddeley Sapphire (125 HP @ 4400 RPM) has 40 more horse power than 1950 Allard J1. (85 HP @ 3800 RPM) In normal driving conditions, 1953 Armstrong Siddeley Sapphire should accelerate faster than 1950 Allard J1. With that said, vehicle weight also plays an important factor in acceleration. 1953 Armstrong Siddeley Sapphire weights approximately 555 kg more than 1950 Allard J1. 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, 1953 Armstrong Siddeley Sapphire (239 Nm @ 1000 RPM) has 36 more torque (in Nm) than 1950 Allard J1. (203 Nm @ 1500 RPM). This means 1953 Armstrong Siddeley Sapphire will have an easier job in driving up hills or pulling heavy equipment than 1950 Allard J1.
Compare all specifications:
| 1950 Allard J1 | 1953 Armstrong Siddeley Sapphire | |
| Make | Allard | Armstrong Siddeley |
| Model | J1 | Sapphire |
| Year Released | 1950 | 1953 |
| Engine Position | Front | Front |
| Engine Size | 3622 cc | 3435 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 85 HP | 125 HP |
| Engine RPM | 3800 RPM | 4400 RPM |
| Torque | 203 Nm | 239 Nm |
| Torque RPM | 1500 RPM | 1000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 1020 kg | 1575 kg |
| Vehicle Length | 3690 mm | 4910 mm |
| Vehicle Width | 1480 mm | 1840 mm |
| Vehicle Height | 1510 mm | 1610 mm |
| Wheelbase Size | 2440 mm | 2900 mm |
