Holley/Demon Carb stumble
PS. The MABs can effect the initiation of fuel flow. It's just that their strongest effect is at higher rpms. Which way going larger or smaller with the bleed will effect lower rpm AFR, if at all, is pretty hard to know without tons of experience and notes. (Don't look at me, I just tinker a little and see what happens)
Tuner posted:
Graph showing Main and Emulsion Bleed behavior from Edward F. Obert's book, Internal Combustion Engines.
Holes A and B are "Emulsion" bleeds.
D is the Main Air Bleed.
This is a generalized description of carb bleed behavior. Venturi area relative to main circuit flow path area and engine air flow range affect these characteristics.
PS. The MABs can effect the initiation of fuel flow. It's just that their strongest effect is at higher rpms. Which way going larger or smaller with the bleed will effect lower rpm AFR, if at all, is pretty hard to know without tons of experience and notes. (Don't look at me, I just tinker a little and see what happens)
Tuner posted:
Graph showing Main and Emulsion Bleed behavior from Edward F. Obert's book, Internal Combustion Engines.
Holes A and B are "Emulsion" bleeds.
D is the Main Air Bleed.
This is a generalized description of carb bleed behavior. Venturi area relative to main circuit flow path area and engine air flow range affect these characteristics.