Factory Specifications Source: 1971  BMW  Engine: 4-cylinder, 4-stroke in-line, water-cooled, with overhead camshaft (OHC), inclined valves and swirl-action hemispherical combustion chambers.    Displacement: 121.4 cubic inches Stroke: 80mm Bore: 89mm Rated output: 113 horsepower (SAE) at 5800 rpm Maximum permitted engine speed: 6200 rpm Maximum continuous engine speed: 6000 rpm Maximum torque: 115.7 ft/lb at 3000 rpm Compression ratio: 8.5:1 Carburetion:  1 Solex 40 PDSI downdraught

Ignition: Centrifugal advance

Electrical equipment: 12 volt / Bosch K1-14V 35 A 20, 44 Ah battery

Gearbox: 4-speed syncromesh: 1st 3.835, 2nd 2.053, 3rd 1.345, 4th 1.0, R 4.18

Differential ratio: 3.64:1 (hypoid gears)

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                   Wheel suspension: Front: Independent suspension by lower wish-bones and spring columns incorporating double acting hydraulic shock absorbers, coil springs and rubber auxiliary springs.  Wheel travel 180 mm (7").  Torsion bar stabilizer with no-maintenance rubber mountings.

Rear: Independently sprung wheels with semi-trailing arms mounted on rubber bushes requiring no maintenance..  Delta-shaped box-section support beam for trailing arms and final drive, attached to bodywork at 4 points by rubber mountings.  Coil springs and auxiliary rubber springs, spring travel 190 mm (7.5"); double-acting hydraulic telescopic shock absorbers.  Torsion bar stabilizer with no-maintenance rubber mountings.          

Steering: ZF Gemmer hourglass mechanism with worm and roller;
three-piece track rod; total reduction ratio of 17.58:1

Rims: 4 1/2 J X 13 well-base rims

Tires: 165 SR 13 radial-ply tires, with tube and metal screw valve 40 G DIN 7771

     Brakes: Service brake; dual circuit servo system.  

Front: 4 Piston fixed caliper type disc brake, self-adjusting, disc diameter 2. 45 inches.  

Rear: Simplex-drum brakes with self-centering shoes, drum diameter 9.05 inches.  

Parking brake operates mechanically on rear wheels only.

Seats: Front: Single seats adjustable to 4 rake angles. Rear: Bench type seat. Windows: Front: 2 fully recessed crank-operated side windows and 2 pivoted quarter lights. Rear: 2 pivot windows. Heating and ventilation: Fresh air high-performance heating by mixture of cold and hot air, indefinitely variable adjustment of temperature. Two-speed blower. Ventilation by air evacuation above rear window, extraction at side pillars below chrome molding. Defroster at front windscreen and side windows. Heated rear windscreen.

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