The 728i is a rear wheel drive Paul Bracq designed saloon (sedan) motor vehicle with a front mounted engine, sold by BMW.
The BMW 728i belongs to the E23 range of cars from BMW.
Power is produced by a single overhead camshaft, 2.8 litre naturally aspirated 6 cylinder engine, with 2 valves per cylinder that provides power and torque figures of 181 bhp (184 PS/135 kW) at 5800 rpm and 240 N·m (177 lb·ft/24.5 kgm) at 4200 rpm respectively.
The engine powers the wheels via a 3 speed automatic gearbox.
It weighs a claimed 1505 kg at the kerb.
Its maximum speed stated is 190 km/h or 118 mph.
Full specs
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| Carrosserie | |||
|---|---|---|---|
| Carrosserie | 4/5 seater sedan/saloon | ||
| Nombre de portes | 4 | ||
| Designer | Paul Bracq | ||
| Dimensions et poids | |||
| Empattement | 2795 | 110 | |
| Voies AV | 1508 | 59.4 | |
| Voies AR | 1522 | 59.9 | |
| Longueur | 4860 | 191.3 | |
| Largeur | 1800 | 70.9 | |
| Hauteur | 1430 | 56.3 | |
| Garde au sol | |||
| 1.74 | |||
| Poids avec pleins | 1505 kg | 3318 | |
| Répartition poids AV | |||
| Réservoir à essence | 85 litres | 18.7 [22.5] UK [US] gal. | |
| Caractéristiques aérodynamique | |||
| Coefficient de pénétration | |||
| maître-couple | |||
| SCx | |||
| naturally aspirated petrol | |||
| Constructeur du moteur | BMW | ||
| Type moteur | M30 | ||
| Cylinders | Straight 6 | ||
| Cylindrée | 2.8 litre 2788 cc (170.134 cu in) |
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| Alésage × Course | 86 × 80 mm
3.39 × 3.15 in |
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| Rapport alésage / course | 1.08 | ||
| Distribution | single overhead camshaft (SOHC)
2 Soupapes par cylindre 12 Total vannes |
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| Puissance maximale (DIN) |
184 PS (181 bhp) (135 kW) à 5800 tr/mn |
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| Couple maximale (DIN) |
240 Nm (177 ft·lb) (24.5 kgm) à 4200 tr/mn |
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| Specific output (DIN) |
48.4 kW/litre 65.8 ps/litre 64.9 bhp/litre 1.06 bhp/cu in |
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(DIN) |
86.08 Nm/litre
1.04 ft·lb/cu3 |
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| Construction | cast iron block; light alloy head | ||
| Lubrification | Carter humide | ||
| Taux de compression | 9.3:1 | ||
| Carburant | Bosch L-Jetronic fuel injection | ||
| bmep (brake mean effective pressure) | 1081.8 kPa (156.9 psi) | ||
| Régime maximal | |||
| Nombre de paliers de vilebrequin | 7 | ||
| Refroidissement | Water | ||
| Cylindrée Unitaire | 464.67 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalyseur | N | ||
| Performances | |||
| 0-80km/h | |||
| 0-60mph | |||
| 0-100km/h | 11.5 s | ||
| 0-160km/h | |||
| 0-400m | |||
| 0-1000m | 33 s | ||
| Vitesse | 190 km/h (118 mph) | ||
| Power-to-weight ratio | Higher is better 121.94 PS/tonne (1000 kg) 0.12 PS/kg 89.68 kW/tonne (1000 kg) 0.09 kW/kg 120.27 bhp/tonne (1000 kg) 0.12 bhp/kg 0.05 bhp/lb |
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| Weight-to-power ratio | Lower is better 11.15 kg/kW 18.63 lb/bhp |
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| Consommation | |||
| Consommation | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Emissions de CO₂ | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| Châssis | |||
| Emplacement de moteur | front | ||
| Engine layout | longitudinal | ||
| Traction | rear wheel drive | ||
| Répartition du couple | N/A | ||
| Direction | |||
| turns lock-to-lock | 3.800 | ||
| Turning circle | |||
| Suspension AV | I.CS.ARB. | ||
| Suspension AR | I.STA.CS. | ||
| Roues AV | 6J x 14 H2 | ||
| Roues AR | 6J x 14 H2 | ||
| Pneumatiques AV | 195/70 HR 14 88H | ||
| Pneumatiques AR | 195/70 HR 14 88H | ||
| Freins AV/AR | VeDi/Di-S | ||
| Diamètre des freins AV | 280 mm | ||
| Diamètre des freins AR | 280 mm | ||
| Braked area | |||
| Transmission | 3 speed automatic | ||
| Rapport de démultiplication supérieure | 1 | ||
| Rapport de pont | 3.64 | ||
| Généralités | |||
| Carfolio.com ID | 274923 | ||
| Production total | |||
| Type mines | |||
| E23 | |||
| RAC rating | 27.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1979 BMW 728i Automatic added 2012-06-07. Last modified 2020-02-02. |
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