Suction funnel aluminum (polished) for Bing 40-series carburettors with sieve

Description

Very nice, polished aluminum intake funnel. Front inner diameter 55 mm (connection dimension on the carburettor) with round filter screen. E.g. for BING carburettor 40. Fastening with 3 grub screws (offset by 120 degrees) on the flange of the carburetor of BMW 2-valve motorcycles.
Very noble and high quality part!
When using open intake funnels, the carburetor must be retuned. Experience has shown that the main jet is a “tens number”. selected larger (e.g. 160, etc.). The idle jet should be selected to 50 instead of 45. The exact adjustment is made by means of the position of the nozzle needle.
Operation in public traffic not permitted.
Other velocity stacks for Moto Guzzi (30, 36 and 40 Dellorto) available at short notice.
Inside 55 mm, outside 68 mm
Overall length 92 mm (including flange and sieve)
Diameter at the sieve 77 mm (outside)
These velocity stacks are made by HAND! individually made from the “solid”.
The outside dimensions can vary.