1950 Allard J1 vs. 1951 Alvis TB 21
To start off, 1951 Alvis TB 21 is newer by 1 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, 1951 Alvis TB 21 (91 HP @ 4000 RPM) has 6 more horse power than 1950 Allard J1. (85 HP @ 3800 RPM) In normal driving conditions, 1951 Alvis TB 21 should accelerate faster than 1950 Allard J1.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 1 more torque (in Nm) than 1950 Allard J1. (203 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1950 Allard J1.
Compare all specifications:
| 1950 Allard J1 | 1951 Alvis TB 21 | |
| Make | Allard | Alvis |
| Model | J1 | TB 21 |
| Year Released | 1950 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 3622 cc | 2993 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 85 HP | 91 HP |
| Engine RPM | 3800 RPM | 4000 RPM |
| Torque | 203 Nm | 204 Nm |
| Engine Bore Size | 77.8 mm | 84 mm |
| Engine Stroke Size | 95.3 mm | 90 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Length | 3690 mm | 4430 mm |
| Vehicle Width | 1480 mm | 1680 mm |
| Wheelbase Size | 2440 mm | 2750 mm |
