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BMW 321 Saloon

(1939 model)

Brief specs of 1939 BMW 321 Saloon

2-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OHV (overhead valve, I-head), 1971 cm3 / 120.3 cu in / 120.3 cu in, 33.6 kW / 45.1 hp / 45.1 hp @ 3750 rpm / 3750 rpm / 3750 rpm, manual 4-speed transmission, rear wheel drive, 109 km/h / 68 mph / 68 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1939
Model321 SaloonIssued until
Serie3Number made2078
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors2
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4500 mm / 177.2 in / 177.2 inTotal (curb) weight1000 kg / 2205 lb / 2205 lb
Width1670 mm / 65.7 in / 65.7 inDry weight
Height1500 mm / 59.1 in / 59.1 inLoad capacity
Wheelbase2750 mm / 108.3 in / 108.3 inGross (max.) weight
Track front1300 mm / 51.2 in / 51.2 inTowing weight
Track rear1300 mm / 51.2 in / 51.2 inWeight distribution (front)
Ground clearanceFuel capacity50 l / 11.0 UK gal / 13.2 US gal
Length/wheelbase ratio1.64  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.13 m2 / 22.9 sq ft / 22.9 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) Total number of valves12
Engine ManufacturerBMWValves per cylinder2
Engine constructionBore66.0 mm / 2.60 in / 2.60 in
Fuelpetrol (gasoline)Stroke96.0 mm / 3.78 in / 3.78 in
Fuel detailsBore/Stroke ratio0.69
Fuel supply1 So 30 BFLVS carbEngine displacement1971 cm3 / 120.3 cu in / 120.3 cu in
Engine Main bearings4Unitary capacity328.50 cm3/cylinder / 20.046 cu in/cylinder / 20.046 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio6.0 : 1
SumpMax. output power33.6 kW / 45.1 hp / 45.1 hp at 3750 rpm / 3750 rpm / 3750 rpm
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)6.9 kW / 9.3 hp / 9.3 hp (est.)
CoolantwaterSpecific output17.1 kW/l / 0.375 bhp/cu in / 0.375 bhp/cu in
Catalytic converternoSpecific torque

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.38

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed109 km/h / 68 mph / 68 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio45.0 kW/ton / 34.1 bhp/ton / 34.1 bhp/ton
Acceleration 0-100 km/h35.00 s / 35.00 s / 35.00 sFuel 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
Steeringrack & pinionSteering details
Turns lock-to-lockTurning circle11.0 m / 36.1 ft / 36.1 ft
Suspension frontLive axle,T Wishbone (A-arm, control arm), Transverse leaf springSuspension rearLive axle, Semi-elliptic leaf springs
Wheels front3.50D x 16Wheels rear3.50D x 16
Tyres front5.50 x 16Tyres rear5.50 x 16
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of BMW 321 Saloon

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