page_title: Bandini Formula Three
section_title: The engine
hierarchical_section_title: Bandini Formula Three / The engine
caption_attribution_description: Bandini formula 3 picture by Bandini book
context_page_description: The Bandini formula three is a racing car model produced from 1954 until 1958 by Bandini Automobili of Forlì.
  This type, produced at the same two-seater sports was born in order to participate in the 750 cc engine capacity race-only category. This gave birth first to Formula Junior and later Formula Three.
  The characteristics that make the Bandini F3 historically important are the unprecedented postponement of box differential and testing of disc brakes on all four wheels. Disc brakes had only recently appeared on racing cars with the advent of the 1951 C-type, which used them to great advantage at Le Mans. The advantages of disc brakes were mainly limited solely to lower unsprung masses as the study of materials of seals of friction had not yet allow evolution that today poses this choice as a solution required the cars allocated to the races. They also helped avoid brake fade.
context_section_description: The three Bandini formula used the same engines which powered the two-seater sports the same period: Bandini-Crosley first and second series, although the duration of lesser races for single-seater allowed the use of modifications and adjustments "pushes" as an increase in the compression ratio or the use of alloy connecting rod.
  Positioning: forward longitudinal, 4-cylinder in-line
  Materials and particularity: base 5 media bench and sump of aluminium of 5 litres capacity, aluminium DOHC head with 8 valves inclined, cylinders dismantled in cast iron block.
  Bore: 63.5 mm (2.5 in)
  Stroke: 59 mm (2.3 in)
  Displacement: 747 cc (45.6 cu in)
  Compression ratio: 11.2:1
  Power: 2 twin-choke (two-barrel) Weber carburetors double body 35DCO3 horizontal or vertical
  Power: 66 to 73 hp 9000 rpm
  Lubricate: Carter with wet gear pump and filter external wire mesh
  Cooling: forced liquid with centrifugal pump controlled by pulley and belt, cooler on the front
  Gearbox and clutch: 4 speed+ RG, clutch single dry disc
  Ignition and electrical equipment: coil and distributor on the head, battery 12 V and generator
caption: The engine Bandini second series with carburettors vertical
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