1991 Ford Sierra vs. 1968 Sunbeam Rapier
To start off, 1991 Ford Sierra is newer by 23 year(s). Which means there will be less support and parts availability for 1968 Sunbeam Rapier. In addition, the cost of maintenance, including insurance, on 1968 Sunbeam Rapier would be higher. At 1,751 cc (4 cylinders), 1991 Ford Sierra is equipped with a bigger engine. In terms of performance, 1968 Sunbeam Rapier (79 HP @ 5200 RPM) has 4 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 1968 Sunbeam Rapier should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Sierra weights approximately 115 kg more than 1968 Sunbeam Rapier.
Let's talk about torque, 1991 Ford Sierra (152 Nm @ 2200 RPM) has 26 more torque (in Nm) than 1968 Sunbeam Rapier. (126 Nm @ 3800 RPM). This means 1991 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1968 Sunbeam Rapier.
Compare all specifications:
| 1991 Ford Sierra | 1968 Sunbeam Rapier | |
| Make | Ford | Sunbeam |
| Model | Sierra | Rapier |
| Year Released | 1991 | 1968 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 1725 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 79 HP |
| Engine RPM | 4500 RPM | 5200 RPM |
| Torque | 152 Nm | 126 Nm |
| Torque RPM | 2200 RPM | 3800 RPM |
| Engine Bore Size | 82.5 mm | 81.6 mm |
| Engine Stroke Size | 82 mm | 82.7 mm |
| Engine Compression Ratio | 21.5:1 | 9.2:1 |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1145 kg | 1030 kg |
| Vehicle Length | 4430 mm | 4440 mm |
| Vehicle Width | 1700 mm | 1670 mm |
| Vehicle Height | 1370 mm | 1400 mm |
| Wheelbase Size | 2620 mm | 2510 mm |
| Fuel Tank Capacity | 60 L | 68 L |
