1977 BMW 728 E23

The BMW 728 is a 4 door sedan/saloon style car with a front positioned engine supplying power to the rear wheels. The BMW 728 belongs to the E23 range of cars from BMW. Powering the BMW 728 is a single overhead camshaft, 2.8 litre naturally aspirated 6 cylinder motor, with 2 valves per cylinder that develops power and torque figures of 168 bhp (170 PS/125 kW) at 5800 rpm and 233 N·m (172 lb·ft/23.8 kgm) at 4000 rpm respectively. The power is transmitted to the wheels via a 4 speed manual gearbox. The quoted weight at the kerb is 1530 kg. Top stated speed is 192 km/h (119 mph).

Pictures

BMW 728 -
BMW 728
Image courtesy of BMW

Key facts

1977 BMW 728 E23 information summary

What body style?
4 door sedan/saloon with 4/5 seats
How long?
4860 mm
How heavy?
1530 kg
What size engine?
2.8 litre, 2788 cm3
How many cylinders?
6, Straight
How much power?
170 PS / 168 bhp / 125 kW @ 5800 rpm
How much torque?
233 Nm / 172 ft.lb / 23.8 kgm @ 4000 rpm
How quick?
0-60 mph: 10 s
How quick?
0-100 km/h: 10.1 s
How fast?
192 km/h, 119 mph

BMW E23 models

4 door sedan/​saloon FR 3A 3210 cm3 180 PS 177.5 bhp 132 kW 1520 kg
4 door sedan/​saloon FR 5M 3430 cm3 218 PS 215 bhp 160 kW 1500 kg
4 door sedan/​saloon FR 4A 3430 cm3 252 PS 248.5 bhp 185 kW 1590 kg
4 door sedan/​saloon FR 3A 3210 cm3 175 PS 173 bhp 129 kW 1610 kg
4 door sedan/​saloon FR 4M 2788 cm3 184 PS 181 bhp 135 kW 1490 kg
4 door sedan/​saloon FR 5M 2788 cm3 184 PS 181 bhp 135 kW 1470 kg
4 door sedan/​saloon FR 3A 2788 cm3 184 PS 181 bhp 135 kW 1505 kg
4 door sedan/​saloon FR 5M 3210 cm3 200 PS 197 bhp 147 kW 1500 kg
4 door sedan/​saloon FR 5M 3453 cm3 218 PS 215 bhp 160 kW 1530 kg
BMW 745i -
4 door sedan/​saloon FR 3A 3210 cm3 252 PS 248.5 bhp 185 kW 1600 kg
4 door sedan/​saloon FR 3A 2788 cm3 170 PS 168 bhp 125 kW 1550 kg
4 door sedan/​saloon FR 4M 2986 cm3 184 PS 181 bhp 135 kW 1580 kg
4 door sedan/​saloon FR 3A 2986 cm3 184 PS 181 bhp 135 kW 1600 kg
BMW 733i -
4 door sedan/​saloon FR 4M 3210 cm3 200 PS 197 bhp 147 kW 1600 kg
4 door sedan/​saloon FR 3A 3210 cm3 200 PS 197 bhp 147 kW 1620 kg

Similar models

4 door sedan/​saloon FR 5M 2492 cm3 160 PS 158 bhp 118 kW 1470 kg
4 door sedan/​saloon FR 5M 3235 cm3 167 PS 165 bhp 123 kW
4 door sedan/​saloon FR 4M 2792 cm3 162 PS 160 bhp 119 kW 1417 kg
4 door sedan/​saloon FR 4OD 3442 cm3 163 PS 161 bhp 120 kW 1700 kg
Mercedes-Benz 280 -
4 door sedan/​saloon FR 4M 2746 cm3 156 PS 154 bhp 115 kW 1455 kg
4 door sedan/​saloon FR 4A 2746 cm3 156 PS 154 bhp 115 kW
Mercedes-Benz 280 E -
4 door sedan/​saloon FR 4M 2746 cm3 185 PS 182 bhp 136 kW 1475 kg
4 door sedan/​saloon FR 5M 2746 cm3 185 PS 182 bhp 136 kW 1475 kg
4 door sedan/​saloon FR 4M 2746 cm3 177 PS 175 bhp 130 kW 1460 kg
4 door sedan/​saloon FR 4A 2746 cm3 185 PS 182 bhp 136 kW 1475 kg
4 door sedan/​saloon FR 4M 2746 cm3 156 PS 154 bhp 115 kW 1560 kg
4 door sedan/​saloon FR 5M 2746 cm3 156 PS 154 bhp 115 kW
4 door sedan/​saloon FR 4M 2746 cm3 156 PS 154 bhp 115 kW 1610 kg
4 door sedan/​saloon FR 4A 2746 cm3 156 PS 154 bhp 115 kW
4 door sedan/​saloon FR 4A 2746 cm3 156 PS 154 bhp 115 kW
4 door sedan/​saloon FR 4M 2746 cm3 185 PS 182 bhp 136 kW 1560 kg
4 door sedan/​saloon FR 4M 2746 cm3 185 PS 182 bhp 136 kW 1610 kg
4 door sedan/​saloon FR 4M 2746 cm3 177 PS 175 bhp 130 kW 1610 kg
4 door sedan/​saloon FR 4A 2746 cm3 185 PS 182 bhp 136 kW
4 door sedan/​saloon FR 4A 2746 cm3 185 PS 182 bhp 136 kW
4 door sedan/​saloon FR 4A 2746 cm3 177 PS 175 bhp 130 kW
4 door sedan/​saloon FR 4M 2746 cm3 185 PS 182 bhp 136 kW 1590 kg
4 door sedan/​saloon FR 4M 2746 cm3 185 PS 182 bhp 136 kW 1645 kg
4 door sedan/​saloon FR 4M 2746 cm3 177 PS 175 bhp 130 kW 1645 kg
4 door sedan/​saloon FR 4A 2746 cm3 185 PS 182 bhp 136 kW
4 door sedan/​saloon FR 4A 2746 cm3 185 PS 182 bhp 136 kW
4 door sedan/​saloon FR 4A 2746 cm3 177 PS 175 bhp 130 kW
Opel Senator -
4 door sedan/​saloon FR 5M 2969 cm3 183 PS 180 bhp 134 kW 1485 kg
4 door sedan/​saloon FR 3A 2969 cm3 183 PS 180 bhp 134 kW 1495 kg
4 door sedan/​saloon FR 5M 3532 cm3 155 PS 153 bhp 114 kW 1372 kg
4 door sedan/​saloon FR 3A 3532 cm3 155 PS 153 bhp 114 kW
4 door sedan/​saloon FR 3A 3376 cm3 183 PS 180 bhp 134 kW 1845 kg
1977 BMW 728 data
bodywork
Body type4/5 seater sedan/saloon
Number of doors4
Designer
dimensions & weights
mminches
Wheelbase 2795 mm 110 inches
Track/tread (front) 1508 mm 59.4 inches
Track/tread (rear) 1522 mm 59.9 inches
Length 4860 mm 191.3 inches
Width 1800 mm 70.9 inches
Height 1430 mm 56.3 inches
Ground clearance
length:wheelbase ratio 1.74
Kerb weight 1530 kg 3373 lb
Weight distribution
fuel tank capacity 85 litres 18.7 UK Gal 22.5 US Gal
aerodynamics
Drag coefficient 0.42
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer BMW
Engine code M30B28
Cylinders Straight 6
Capacity 2.8 litre
2788 cc
(170.134 cu in)
Bore × Stroke 86 × 80 mm
3.39 × 3.15 in
Bore/stroke ratio 1.08
Valve gear single overhead camshaft (SOHC)
2 valves per cylinder
12 valves in total
maximum power output
(DIN)
170 PS (168 bhp) (125 kW)
at 5800 rpm
Specific output
(DIN)
60.3 bhp/litre
0.99 bhp/cu in
maximum torque
(DIN)
233 Nm (172 ft·lb) (23.8 kgm)
at 4000 rpm
Specific torque
(DIN)
83.57 Nm/litre
1.01 ft·lb/cu3
Engine construction
sump wet sumped
compression ratio 9:1
Fuel system 1 Solex 4 A 1 carburettor
bmep (brake mean effective pressure) 1050.2 kPa (152.3 psi)
Maximum RPM
crankshaft bearings
Engine coolant Water
Unitary capacity 464.67 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph 10 s
Acceleration 0-100km/h 10.1 s
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed 192 km/h (119 mph)
Power-to-weight ratio 111.33 PS/tonne (1000 kg)
81.88 kW/tonne (1000 kg)
109.8 bhp/tonne (1000 kg)
0.05 bhp/lb
Weight-to-power ratio 12.21 kg/kW
20.4 lb/bhp
fuel consumption
Fuel consumption
universal 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.CS.ARB.
Rear suspension I.STA.CS.
Wheel size front 6J x 14 H2
Wheel size rear 6J x 14 H2
Tyres front 195/70 HR 14
Tyres rear 195/70 HR 14
Brakes F/R VeDi/Di-S
Front brake diameter 280 mm
Rear brake diameter 280 mm
Braked area
Gearbox 4 speed manual
Top gear ratio 1
Final drive ratio 3.64
general
Carfolio.com ID56067
Production total
Model code
Model family E23
RAC rating 27.5
Insurance classification No information available
Tax band No information available
1977 BMW 728 added before December 1995.
Last modified 2013-02-28.