General specifications for Dellorto VHB carburetors

Detailed technical information regarding Dell’Orto motorcycle carburetors, how to tune, parts diagrams, slide specifications, needle specifications, jet specifications, and atomizer specifications.

Updated: 2006 January 12

This information was gleaned from Eurocarb.

• Choke sizes: 20 mm , 22 mm , 24 mm , 25 mm , 26 mm , 27 mm , 28 mm , 29 mm , 30 mm
• Clamp-on fitting sizes: 35 mm , 31.75 mm , 28.57 mm
• Cable or lever operated independent choke system
• Square slide
• 29 mm and 30 mm models available with piston type accelerator pump system
• Independent idling circuit with adjustment on left or right
• Original equipment on:
  • Aermacchi
  • Benelli
  • Beta
  • Ducati
  • Fantic
  • Gilera
  • Laverda
  • MV
  • Minarelli
  • Moto Guzzi
  • Moto Morini
  • Vespa