Air nozzle set specific for the Dell'Orto carburetor SI24 / 24G (e.g. Vespa T5). The carburettors specified with the ending 'G' have a lower overall height than those with the suffix 'E' or 'D'. For this reason, shorter auxiliary and air jets are used in the 'G' carburettor types. An air nozzle in size 5 was used in the T120 models almost exclusively from the factory. Other sizes are no longer available from Piaggio / Dell'Orto. The BGM PRO set fills this gap and offers with the sizes 120, 130, 140, 150, 160, 170 and 180 a very large range for the individual adjustment of the carburetor. AIR JET FUNCTION A main jet has a linear delivery characteristic. This means that the main nozzle would over-grease the mixture with increasing speed. This is exactly where the air nozzle (precisely: main air correction nozzle) starts. This makes the mixture lean again with increasing speed. The larger the air nozzle, the more it leans the mixture. The range available for the SI carburetors ranges from 120-190. A 120 air nozzle has a bore of only 1,2mm, so it only provides very little air and is accordingly lubricating. A 190 air nozzle provides a lot of air and is therefore very lean. NOZZLE STOCK SI FUNCTION The working range of the main nozzle stick starts at approx. 3500 rpm. Before that, the engine was only operated via the auxiliary nozzle (depending on the speed and slide opening). In the nozzle assembly area of the SI carburetor (from ...
- bgm - item number: BGM857KTL1
- Availability: in stock (Please check availability here in Scooter Center Shop)
- Weight: approx. 0,04 kg
- Category: Engine> carburetor> carburetor jets
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