Description

Genuine Dellorto

Idle jet

-DELLORTO (type: 9892)

SI- (40-120) 3.00

 Pilot Jet For Vespa Si Carburettors, also known as Idle Jet  

The pilot jet on the Si carb controls both fuel and air, they have 2 holes in each jet, the fuel is controlled by the size of the lower hole and the air is controlled by the size of the top hole, hence they have 2 numbers on each jet. 

The first number is the size of the fuel jet and the second number is the size of the air jet. There are also 2 versions of the Si pilot jet, a short version only for the Vespa T5 and a long version suitable for everything else.

 This is the Long version and they are available in the following sizes 48/100, 55/100 38/120, 45/120, 50/120, 52/120 45/140, 48/140, 50/140, 52/140 45/160, 48/160, 50/160, 55/160 and should you need something bigger Pinasco has made a set of larger pilot jets