1972 Citroen SM vs. 1956 Morris Isis
To start off, 1972 Citroen SM is newer by 16 year(s). Which means there will be less support and parts availability for 1956 Morris Isis. In addition, the cost of maintenance, including insurance, on 1956 Morris Isis would be higher. At 2,670 cc (6 cylinders), 1972 Citroen SM is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (158 HP @ 5500 RPM) has 73 more horse power than 1956 Morris Isis. (85 HP @ 4250 RPM). In normal driving conditions, 1972 Citroen SM should accelerate faster than 1956 Morris Isis. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 155 kg more than 1956 Morris Isis. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1956 Morris Isis is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1956 Morris Isis. However, in wet, icy, snow, or gravel driving conditions, 1972 Citroen SM, being front wheel drive (FWD), will offer much better control with better grip. 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, 1972 Citroen SM (235 Nm @ 4000 RPM) has 67 more torque (in Nm) than 1956 Morris Isis. (168 Nm @ 2000 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1956 Morris Isis.
Compare all specifications:
1972 Citroen SM | 1956 Morris Isis | |
Make | Citroen | Morris |
Model | SM | Isis |
Year Released | 1972 | 1956 |
Engine Position | Front | Front |
Engine Size | 2670 cc | 2639 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | V | in-line |
Valves per Cylinder | 2 valves | 2 valves |
Horse Power | 158 HP | 85 HP |
Engine RPM | 5500 RPM | 4250 RPM |
Torque | 235 Nm | 168 Nm |
Torque RPM | 4000 RPM | 2000 RPM |
Engine Bore Size | 87 mm | 79.4 mm |
Engine Stroke Size | 75 mm | 88.9 mm |
Fuel Type | Gasoline | Gasoline |
Drive Type | Front | Rear |
Transmission Type | Manual | Manual |
Number of Seats | 4 seats | 5 seats |
Vehicle Weight | 1452 kg | 1297 kg |
Vehicle Length | 4900 mm | 4530 mm |
Vehicle Width | 1850 mm | 1660 mm |
Vehicle Height | 1330 mm | 1620 mm |
Wheelbase Size | 2950 mm | 2470 mm |