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BMW 745i Automatic

(1981 model)

Brief specs of 1981 BMW 745i Automatic

4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 3430 cm3 / 209.3 cu in / 209.3 cu in, 187.9 kW / 252.0 hp / 252.0 hp @ 5200 rpm / 5200 rpm / 5200 rpm, 380.0 N·m / 280.3 lb·ft / 280.3 lb·ft @ 2200 rpm / 2200 rpm / 2200 rpm, automatic 4-speed transmission, rear wheel drive, 227 km/h / 141 mph / 141 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1981
Model745i AutomaticIssued until
Serie7Number made
Model familyE23Body construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)2950 l / 104.18 cu ft / 104.18 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4860 mm / 191.3 in / 191.3 inTotal (curb) weight1590 kg / 3505 lb / 3505 lb
Width1800 mm / 70.9 in / 70.9 inDry weight
Height1430 mm / 56.3 in / 56.3 inLoad capacity
Wheelbase2790 mm / 109.8 in / 109.8 inGross (max.) weight
Track front1500 mm / 59.1 in / 59.1 inTowing weight
Track rear1520 mm / 59.8 in / 59.8 inWeight distribution (front)
Ground clearanceFuel capacity100 l / 22.0 UK gal / 26.4 US gal
Length/wheelbase ratio1.74  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.42Frontal area (A)2.19 m2 / 23.6 sq ft / 23.6 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.92 m2 / 9.9 sq ft / 9.9 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)22.8 kW / 30.6 hp / 30.6 hp (est.)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerBMWValves per cylinder2
Engine constructionBore92.0 mm / 3.62 in / 3.62 in
Fuelpetrol (gasoline)Stroke86.0 mm / 3.39 in / 3.39 in
Fuel detailsBore/Stroke ratio1.07
Fuel supplyBo Mot II fuel inj.Engine displacement3430 cm3 / 209.3 cu in / 209.3 cu in
Engine Main bearings7Unitary capacity571.67 cm3/cylinder / 34.885 cu in/cylinder / 34.885 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio8.0 : 1
SumpMax. output power187.9 kW / 252.0 hp / 252.0 hp at 5200 rpm / 5200 rpm / 5200 rpm
AspirationturbochargedMax. torque380.0 N·m / 280.3 lb·ft / 280.3 lb·ft at 2200 rpm / 2200 rpm / 2200 rpm
Compressor type1 KKK turboMaximum rpm
Intercoolerair/ airMax. net output (power at the wheels)29.5 kW / 39.5 hp / 39.5 hp (est.)
CoolantwaterSpecific output54.8 kW/l / 1.204 bhp/cu in / 1.204 bhp/cu in
Catalytic converternoSpecific torque110.8 N·m/l / 0.97 lb·ft/cu in / 0.97 lb·ft/cu in

Transmission

Transmission typeautomaticNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio0.73
  Final gear (drive) ratio2.93

Performance

Acceleration 0-50 mph (80 km/h)5.60 s / 5.60 s / 5.60 sTop (maximal) speed227 km/h / 141 mph / 141 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio158.5 kW/ton / 120.1 bhp/ton / 120.1 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringZF recirculating ball VR PASSteering details
Turns lock-to-lock3.8Turning circle11.6 m / 38.1 ft / 38.1 ft
Suspension frontIndependent, Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearIndependent, Semi-trailing arm, Coil springs
Wheels frontWheels rear
Tyres front205/55-VR16Tyres rear245/50-ZR17
Brakes frontventilated discBrakes reardisc
Brake diameter frontBrake diameter rear
Brakes detailsservo-assisted, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of BMW 745i Automatic

Infobox

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