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  Bugatti Type 51 Grand Prix
 

Bugatti Type 51 Grand Prix
Click here to save all images    Image credits: Wouter Melissen 

Click here to download printer friendly version By the end of the 1920s both Jean and Ettore Bugatti were convinced that the now aging Type 35s needed more power. They were impressed by the performance of the Miller front wheel drive racing car and Jean wanted to get his hands on one to find out what made them so quick. In exchange for three Type 43 Bugattis they got two Millers. The Bugattis dismanteled the engine and made close copies of the head and block for their own cars. This engine was installed in an improved Type 35 chassis and the combination was dubbed Type 51.

In various forms the Type 51s scored successes in the early 1930s until the much larger engined Alfa Romeos and Maseratis took over. The Type 51 was available in both 2 litre and 2.3 litre form, the Type 51A had a smaller engine at 1.5 litre.

The featured example is pictured competing in the pre-1940 class of the 2003 Nürburgring Old Timer Grand Prix.

Article by Wouter Melissen, last updated before 12 / 01 / 2004

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General specifications
Country of origin France
Numbers built 40 (Type 51 and 51A)
Produced from 1931 - 1935

Major wins
1931 Monaco Grand Prix (Louis Chiron)
1931 French Grand Prix (Louis Chiron / Achille Varzi)
1931 Belgian Grand Prix (William Grover-Williams / Caberto Conelli)
1933 Monaco Grand Prix (Achille Varzi)

Engine
Configuration Straight 8
Location Front, longitudinally mounted
Displacement 2.261 liter / 138 cu in
Bore / Stroke 60.0 mm (2.4 in) / 100.0 mm (3.9 in)
Compression 7.5:1
Valvetrain 2 valves / cylinder, DOHC
Fuel feed Zenith Carburettor
Aspiration Roots-Type Supercharger
Power 160 bhp / 119 KW @ 5500 rpm
BHP/Liter 71 bhp / liter

Drivetrain
Chassis body on ladder frame
Front suspension rigid axle, semi-elliptic springs
Rear suspension rigid axle, reversed quarter elliptic springs
Brakes cable operated drums, all-round
Gearbox 4 speed Manual
Drive Rear wheel drive

Dimensions
Weight 750 kilo / 1653.5 lbs
Wheelbase / Track (fr/r) 2400 mm (94.5 in) / 1200 mm (47.2 in) / 1200 mm (47.2 in)

Performance figures
Power to weight 0.21 bhp / kg
Top Speed 230 km/h (143 mph)

Resources
Suggested reading
  • Bugatti Magnum, by Hugh Conway with Maurice Sauzay
  • Bugatti - le Pur Sang des Automobiles, by Hugh Conway
  • Grand Marques Bugatti, by Hugh Conway
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