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BMW 321

Date of manufacture 1939 – 1941
Bodywork type(s) 2 door saloon and cabriolet
Engine Type Inline six-cylinder
Capacity 1971cc
Bore x stroke 66mm x 96mm
Power 45bhp at 3750rpm
Compression 6.1:1
Carburettors 1, Solex 30 mm up draught
Valve design Overhead, 2 per cylinder
Valve gear Camshaft in block. Rockers, tappets and springs
Electrics 6 volt
Transmission Clutch Dry single disc. ( Fichtel & Sachs, K 12 with 200 mm dia.)
Gearbox ratios Hurth
1st 3.66:1
2nd 2.22:1
3rd 1.51:1
4th 1.00:1
Axle ratio 4.55
Synchromesh 3rd – 4th
Chassis Frame Welded low floor chassis with box section side members
Suspension Front: Transverse leaf spring with upper wishbones and integral double acting shock absorbers
Rear: Longitudinal leaf springs with rigid axle and lever arm double acting shock absorbers
Foot operated one shot central oil lubrication system
Steering Rack and pinion
Brakes Four wheel   hydraulic, self adjusting
Handbrake, cable on rear wheels
Dimensions Wheelbase 2750 mm
Track front/rear 1300 mm/1300 mm
Length/width 4500 mm/1560 mm
Tyres 5.50 x 16
General Fuel capacity 50 litres
Max speed 68 mph
Number produced 3692

 

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