The Morgan Plus 4 Mk III is a rear wheel drive motor vehicle, with the engine mounted in the front, and a 2 door convertible/cabriolet bodyshell.
The 4 cylinder, double overhead camshaft naturally aspirated engine has 4 valves per cylinder and a capacity of 2 litres. In this application it produces power and torque figures of 138 bhp (140 PS/103 kW) at 6000 rpm and 178 Nm (131 lbft/18.2 kgm) at 4500 rpm respectively.
The engine delivers its power through to the wheels via a 5 speed manual gearbox.
Claimed kerb weight is 900 kg.
It is said to be able to attain a top speed of 175 km/h (109 mph).
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2489 mm | 98 inches | |
| Track/tread (front) | 1321 mm | 52 inches | |
| Track/tread (rear) | 1346 mm | 53 inches | |
| Length | 3988 mm | 157 inches | |
| Width | 1575 mm | 62 inches | |
| Height | 1321 mm | 52 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.6 | ||
| Kerb weight | 900 kg | 1984 lb | |
| Weight distribution | |||
| fuel tank capacity | |||
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Rover | ||
| Engine code | |||
| Cylinders | Straight 4 | ||
| Capacity | 2 litre 1994 cc (121.681 cu in) |
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| Bore × Stroke | 84.5 × 89 mm
3.33 × 3.5 in |
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| Bore/stroke ratio | 0.95 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 16 valves in total |
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| maximum power output | 140 PS (138 bhp) (103 kW) at 6000 rpm |
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| maximum torque | 178 Nm (131 ft·lb) (18.2 kgm) at 4500 rpm |
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| Specific output | 51.6 kW/litre 70.2 ps/litre 69.2 bhp/litre 1.13 bhp/cu in |
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| Specific torque |
89.27 Nm/litre
1.08 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 10:1 | ||
| Fuel system | |||
| bmep (brake mean effective pressure) | 1121.8 kPa (162.7 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 498.5 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | 5.6 s | ||
| Acceleration 0-60mph | 7.7 s | ||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | 26.1 s | ||
| Standing quarter-mile | 15.2 s
@ 86 mph |
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| Standing kilometre | 29 s
@ 167 km/h |
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| Maximum speed | 175 km/h (109 mph) | ||
| Power-to-weight ratio | Higher is better 155.46 PS/tonne (1000 kg) 0.16 PS/kg 114.34 kW/tonne (1000 kg) 0.11 kW/kg 153.33 bhp/tonne (1000 kg) 0.15 bhp/kg 0.07 bhp/lb |
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| Weight-to-power ratio | Lower is better 8.75 kg/kW 14.61 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Carbon dioxide emissions | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| chassis | |||
| Engine position | front | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | I.SlPi.CS. | ||
| Rear suspension | LA.TL. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | |||
| Tyres rear | |||
| Brakes F/R | |||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 5 speed manual | ||
| Top gear ratio | |||
| Final drive ratio | 3.73 | ||
| general | |||
| Carfolio.com ID | 13189 | ||
| Production total | |||
| Model code | |||
| RAC rating | 17.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1986 Morgan Plus 4 Mk III added before December 1995. Last modified 2013-02-28. |
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