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| Technical Specs of This Model |
| 1. |
4/72 1961
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| General Information |
| Make |
Riley |
| Model |
4/72 |
| Production Year |
1961 |
| Country |
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| Designer |
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| Production Number |
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| Model Code |
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| Model Family |
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| Chassis and Dimensions |
| Chassis Type |
4/5S SAL |
| Number of Doors |
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| Wheelbase |
2546 mm (100,2 in) |
| Front Track |
1283 mm (50,5 in) |
| Rear Track |
1308 mm (51,5 in) |
| Length |
4534 mm (178,5 in) |
| Width |
1613 mm (63,5 in) |
| Height |
1499 mm (59 in) |
| Ground Clearance |
165 mm (6,5 in) |
| Length / Wheelbase Ratio |
1,78 |
| Weight |
1148 kg (2528,6 lb) |
| Weight Distribution (front/rear) |
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| Fuel Capacity |
45,5 litre (10 Imp gal , 12 US gal) |
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| Aerodynamics |
| Drag Coefficient |
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| Frontal Area |
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| Cx |
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| Engine Specifications |
| Engine Manufacturer |
BMC |
| Engine Location |
Front |
| Engine Alignment |
Transverse |
| Engine Construction |
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| Coolant Type |
Water |
| Engine Type |
OHV |
| Number of Cylinders and Placement |
S-4 |
| Valves per Cylinder |
2 (Total of 8 Pieces) |
| Engine Displacement |
1622 cc (98,98 cu in) |
| Bore |
76,2 mm (3 in) |
| Stroke |
88,9 mm (3,5 in) |
| Bore / Stroke Ratio |
0,86 |
| Unitary Capacity |
405,5 cc/cylinder (24,75 cu in/cylinder) |
| Number of Main Bearings |
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| Compression Ratio |
8,3 : 1 |
| Fuel System Type |
2 SU carbs |
| Aspiration Type |
Normal |
| Compressor Type |
- |
| Intercooler Type |
None |
| Catalytic Converter |
No |
| Maximum Engine Power |
68 HP (50,7 kW) |
| Maximum Engine Power rpm |
5000 d/d |
| Maximum Engine Torque |
120 N.m (88,6 lb.ft , 12,2 kg.m) |
| Maximum Engine Torque rpm |
2500 d/d |
| Engine Torque at Max. Engine Power rpm |
96,8 N.m (5000 d/d) |
| Power / Weight Ratio |
59,2 HP/ton (44,2 W/kg) |
| Power / Engine Displacement Ratio |
41,9 HP/litre (31,3 kW/litre) |
| CO2 Emissions |
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| Fuel Consumption |
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| Performance |
| 0 - 80 km/h |
13,5 s |
| 0 - 60 mph |
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| 0 - 100 km/h |
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| 0 - 160 km/h |
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| 80 - 120 km/h (in top gear) |
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| 0 - 400 m Acceleration |
22,1 s |
| 0 - 1000 m Acceleration |
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| Top Speed |
131 km/h (81,4 mph) |
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| Gearbox and Transmission |
| Transmission Type |
4M |
| Top Gear Ratio |
1 : 1 |
| Final Drive Ratio |
4,3 : 1 |
| Drive Wheels |
RWD (Rear Wheel Drive) |
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| Handling, Suspension Geometry and Brakes |
| Steering Type |
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| Steering Turns (lock to lock) |
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| Turning Circle Diameter |
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| Suspension (front) |
I.CS. |
| Suspension (rear) |
LA.SE. |
| Brakes (front/rear) |
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| Brake Disc Diameter (front) |
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| Brake Disc Diameter (rear) |
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| Wheels (front) |
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| Wheels (rear) |
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| Tyres (front) |
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| Tyres (rear) |
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