1949 Allard J1 vs. 1952 Alvis TB 21
To start off, 1952 Alvis TB 21 is newer by 3 year(s). Which means there will be less support and parts availability for 1949 Allard J1. In addition, the cost of maintenance, including insurance, on 1949 Allard J1 would be higher. At 3,917 cc (8 cylinders), 1949 Allard J1 is equipped with a bigger engine. In terms of performance, 1949 Allard J1 (100 HP @ 3800 RPM) has 9 more horse power than 1952 Alvis TB 21. (91 HP @ 4000 RPM). In normal driving conditions, 1949 Allard J1 should accelerate faster than 1952 Alvis TB 21.
Let's talk about torque, 1949 Allard J1 (306 Nm @ 2500 RPM) has 102 more torque (in Nm) than 1952 Alvis TB 21. (204 Nm @ 2200 RPM). This means 1949 Allard J1 will have an easier job in driving up hills or pulling heavy equipment than 1952 Alvis TB 21.
Compare all specifications:
| 1949 Allard J1 | 1952 Alvis TB 21 | |
| Make | Allard | Alvis |
| Model | J1 | TB 21 |
| Year Released | 1949 | 1952 |
| Engine Position | Front | Front |
| Engine Size | 3917 cc | 2992 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 100 HP | 91 HP |
| Engine RPM | 3800 RPM | 4000 RPM |
| Torque | 306 Nm | 204 Nm |
| Torque RPM | 2500 RPM | 2200 RPM |
| Engine Bore Size | 81 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 |
