Dellorto
From MopedWiki
Dellorto carburetors can be found on moped brands such as Tomos and many Italian makes like Gloria Intramotor, Vespa and Garelli. Dellorto's are also a popular carb to retrofit for Motobecane mopeds.
Dellorto Models
Popular models used on mopeds include the SHA series and the PHBG series.
The SHA Series is a flatslide carburetor with a hand or cable choke with fuel adjustment limited to the main jet. The Sha series comes in the following sizes 9,10,12,13,14,15 and 16mm. Many Sha series carburetors have two internal diameters such as the Sha 14/12. The bore diameter is 12mm at the choke opening and 14mm throughout the rest of the carb. The SHA carburetors found on Vespa models are a special low profile design and come in 9-13mm bore sizes. The don't share parts with the regular SHA carburetors but use the same jet type.
The PHVA Series uses a round slide with needle, has 3 jets and an idle mixture adjustment screw. It can be equipped with a lever, cable or electric choke. It can be found on Tomos models with the A55 engine and many scooters.
The PHBC Series shares its design with the PHBG series but uses a different style choke lever. This carburetor is said to be somewhat popular with tuners in Europe.
The PHBG Series carburetor is popular on racing mopeds equipped with big bore cylinders. The PHBG is a round slide carburetor with mixture adjustment, adjustable needle valve and three replaceable fuel jets. The PHBG has a main jet, starter jet and idle jet. The PHBG carburetor can be found in sizes 15-21mm. The PHBG can be equiped with a hand choke or a cable choke and can be equipped with a male or female intake connection.
For information on Dellorto tuning check out this PDF. It is a must read for any tunable Dellorto carburetor owner.
