Basically, the main jet is in a tube (needle valve, actually). In the hole around that tube a passage is drilled across to the pilot tower.
Normally, there is a plug over the pilot jet so the pilot circuit has to draw it's fuel allotment through that cross passage. This is why those carbs need a bigger main jet to cover both circuits usage.
What I am saying, is that if we take the plug off the pilot tower, the pilot should draw it's fuel through the newly open doorway, since it's a lot larger than the old x-port.
Then we should be able to drop the main size back down to 80-81 'normal'.
At worst, might have to put some solder in the x-port just to make sure the 2 circuits are 100% seperate.
What would nix this is if the pilot sits physically higher up the plugged carbs, so that the pilot wasn't in the fuel at the normal float set height.
Normally, there is a plug over the pilot jet so the pilot circuit has to draw it's fuel allotment through that cross passage. This is why those carbs need a bigger main jet to cover both circuits usage.
What I am saying, is that if we take the plug off the pilot tower, the pilot should draw it's fuel through the newly open doorway, since it's a lot larger than the old x-port.
Then we should be able to drop the main size back down to 80-81 'normal'.
At worst, might have to put some solder in the x-port just to make sure the 2 circuits are 100% seperate.
What would nix this is if the pilot sits physically higher up the plugged carbs, so that the pilot wasn't in the fuel at the normal float set height.
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