Zenith 40 tin (idle jet size)

[santiaguito84]

Hi friends in this oportunidas the upset that I discovered that my idle jet have been recalibrated to a greater size.

Someone could help me with this information?
the car is a porsche 911 2.2 T with zenith carb.
According to the manual the original idle jet is 47.5. But I found some models with 2 or 3 different size holes.

Thank you.

[1QuickS]

The holes in the side let air from the idle air bleed jet into the fuel metered through the 47.5 orifice at the tip. The idle air bleed hole is somewhat smaller in area than the summation of areas of the side holes so I believe their quantity/diameter is neither a critical nor a tuning item.

[santiaguito84]

Originally Posted by 1QuickS

The holes in the side let air from the idle air bleed jet into the fuel metered through the 47.5 orifice at the tip. The idle air bleed hole is somewhat smaller in area than the summation of areas of the side holes so I believe their quantity/diameter is neither a critical nor a tuning item.

Ok. many thanks for your help!