Carb tuning, larger accelerator pump nozzle?
IFRs in a low position.
A secondary block in process of tapping and relocating
Found one of our discussions -
Here's a see-thru version of a idle circuit from the bowl side so you can see the path of fuel to the idle and transfer ports.
H, P, L are the three possible location for idle feed restrictions.
Blue represents fuel just sitting at same level as in the fuel bowl.
When there is vacuum at the idle and transfer ports, the atmospheric pressure in the bowl moves the fuel up the idle well and toward the low pressure. When the gasoline is moving strong and steady the small hole from air bleed doesn't allow enough air in to let the connecting passage become atmospheric. Instead it just injects tiny bubbles of air into the fuel flow.
IFRs in a low position.
A secondary block in process of tapping and relocating
Found one of our discussions -
Here's a see-thru version of a idle circuit from the bowl side so you can see the path of fuel to the idle and transfer ports.
H, P, L are the three possible location for idle feed restrictions.
Blue represents fuel just sitting at same level as in the fuel bowl.
When there is vacuum at the idle and transfer ports, the atmospheric pressure in the bowl moves the fuel up the idle well and toward the low pressure. When the gasoline is moving strong and steady the small hole from air bleed doesn't allow enough air in to let the connecting passage become atmospheric. Instead it just injects tiny bubbles of air into the fuel flow.