Carb tuning, larger accelerator pump nozzle?

That's the trouble Rat you have said it again, & I am sick of reading your nonsense. What you say above is the exact opposite of what you said in post 65: decreasing the size of the MAB will delay the mains.
Have you got a 3rd version for us?
Then you add some nonsense in post 76 about 'a weird situation' when a power valve opening at idle causes a rich idle. Not weird at all if you understand how carb works....For this to happen the t/blades have to be open too far at idle, causing the main system to start.


Yup, I’m going to have to block your dumb ***. I said it once and that should have been enough. I’ve typed it wrong several times because you are a book reading fool who evidently hasn’t tuned anything. One more time to clean it up because I have typed it wrong several times now. Here you go. In most cases:

Increasing the MAB will START the main circuit sooner and lean the fuel curve at higher rpm.

Decreasing the MAB will DELAY the main circuit starting and richen the fuel curve at higher rpm.

Do you get it now? That’s not what your books says, but there are way too many links around here that explain how this is. And not books by some guy who is out to make his money selling stuff to street/strip guys. NACA 49 comes to mind.