1957 Armstrong Siddeley Sapphire vs. 1977 Opel Monza
To start off, 1977 Opel Monza is newer by 20 year(s). Which means there will be less support and parts availability for 1957 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1957 Armstrong Siddeley Sapphire would be higher. At 2,969 cc (6 cylinders), 1977 Opel Monza is equipped with a bigger engine. In terms of performance, 1977 Opel Monza (180 HP @ 5800 RPM) has 95 more horse power than 1957 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 1977 Opel Monza should accelerate faster than 1957 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1977 Opel Monza weights approximately 7 kg more than 1957 Armstrong Siddeley Sapphire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1977 Opel Monza (248 Nm @ 4200 RPM) has 87 more torque (in Nm) than 1957 Armstrong Siddeley Sapphire. (161 Nm @ 1750 RPM). This means 1977 Opel Monza will have an easier job in driving up hills or pulling heavy equipment than 1957 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1957 Armstrong Siddeley Sapphire | 1977 Opel Monza | |
| Make | Armstrong Siddeley | Opel |
| Model | Sapphire | Monza |
| Year Released | 1957 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 2969 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 180 HP |
| Engine RPM | 4400 RPM | 5800 RPM |
| Torque | 161 Nm | 248 Nm |
| Torque RPM | 1750 RPM | 4200 RPM |
| Engine Bore Size | 70 mm | 95 mm |
| Engine Stroke Size | 100 mm | 69.8 mm |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1360 kg | 1367 kg |
| Vehicle Length | 4580 mm | 4730 mm |
| Vehicle Width | 1750 mm | 1730 mm |
| Vehicle Height | 1570 mm | 1350 mm |
| Wheelbase Size | 2900 mm | 2670 mm |
