1955 Armstrong Siddeley Sapphire vs. 1957 Jensen Interceptor
To start off, 1957 Jensen Interceptor is newer by 2 year(s). Which means there will be less support and parts availability for 1955 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1955 Armstrong Siddeley Sapphire would be higher. At 3,993 cc (6 cylinders), 1957 Jensen Interceptor is equipped with a bigger engine. In terms of performance, 1957 Jensen Interceptor (129 HP @ 3700 RPM) has 4 more horse power than 1955 Armstrong Siddeley Sapphire. (125 HP @ 4700 RPM) In normal driving conditions, 1957 Jensen Interceptor should accelerate faster than 1955 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1955 Armstrong Siddeley Sapphire weights approximately 335 kg more than 1957 Jensen Interceptor.
Let's talk about torque, 1957 Jensen Interceptor (288 Nm @ 2200 RPM) has 41 more torque (in Nm) than 1955 Armstrong Siddeley Sapphire. (247 Nm @ 2000 RPM). This means 1957 Jensen Interceptor will have an easier job in driving up hills or pulling heavy equipment than 1955 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1955 Armstrong Siddeley Sapphire | 1957 Jensen Interceptor | |
| Make | Armstrong Siddeley | Jensen |
| Model | Sapphire | Interceptor |
| Year Released | 1955 | 1957 |
| Engine Position | Front | Front |
| Engine Size | 3435 cc | 3993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 125 HP | 129 HP |
| Engine RPM | 4700 RPM | 3700 RPM |
| Torque | 247 Nm | 288 Nm |
| Torque RPM | 2000 RPM | 2200 RPM |
| Engine Bore Size | 90 mm | 87.3 mm |
| Engine Stroke Size | 90 mm | 111.1 mm |
| Vehicle Weight | 1830 kg | 1495 kg |
| Vehicle Length | 5390 mm | 4780 mm |
| Vehicle Width | 1840 mm | 1680 mm |
| Vehicle Height | 1680 mm | 1480 mm |
| Wheelbase Size | 3380 mm | 2860 mm |
