1952 Alvis TB 21 vs. 1965 Riley 4
To start off, 1965 Riley 4 is newer by 13 year(s). Which means there will be less support and parts availability for 1952 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1952 Alvis TB 21 would be higher. At 2,992 cc (6 cylinders), 1952 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 1952 Alvis TB 21 (91 HP) has 24 more horse power than 1965 Riley 4. (67 HP). In normal driving conditions, 1952 Alvis TB 21 should accelerate faster than 1965 Riley 4.
Let's talk about torque, 1952 Alvis TB 21 (204 Nm @ 2200 RPM) has 83 more torque (in Nm) than 1965 Riley 4. (121 Nm @ 2500 RPM). This means 1952 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 1965 Riley 4.
Compare all specifications:
| 1952 Alvis TB 21 | 1965 Riley 4 | |
| Make | Alvis | Riley |
| Model | TB 21 | 4 |
| Year Released | 1952 | 1965 |
| Engine Position | Front | Front |
| Engine Size | 2992 cc | 1620 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 91 HP | 67 HP |
| Torque | 204 Nm | 121 Nm |
| Torque RPM | 2200 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 76.2 mm |
| Engine Stroke Size | 90 mm | 88.9 mm |
| Engine Compression Ratio | 7.1:1 | 8.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4540 mm |
| Vehicle Width | 1680 mm | 1620 mm |
| Wheelbase Size | 2750 mm | 2530 mm |
