Layman's terms was exactly what I was hoping for. Thanks.
And again there is a "seemingly" modern metering block design and the IFRs are still at the top. I just have many questions. Like, if you move the IFRs to the bottom, do you need to plug the top holes? And WHY do they use "only" one pair of emulsion jets? And would "more" emulsion jets be beneficial? And WHY? And how do you tune for those? What symptoms do you look for to tell you which way to tune the emulsion jets......and on and on. LOL
I don't know "which" Holleys come like that now, but all of the Quick Fuel carburetors come with adjustable air bleeds on top, adjustable IFRs on the metering blocks and also adjustable power valve restrictors. Plus they are pretty affordable. Although I've had my metering blocks off several times, my dumbass has failed to see if the emulsion holes are tapped. I'm assuming I wouldda noticed, so I'm gonna say no. But with all the "other" already being done, that would be a small job to handle. Hope that helped answer some of your question.
I thank you my friend for the advice. That said, I don't want advice too technical. I'm a simple man and speak in simple terms. Vizard does not. I don't need to get lost as I already am.
The new stuff is junk. The original Holley's were correctly designed that's why they have 2 emulsion bleeds. I have it from good authority that a properly sized Holley for the engines HP range only requires 2.
I thinks its just the limitaion of the design. If you look at how Carter does emulsion they use a tube and place the emulsion holes around the tube so as to prevent the air coalescing and causing slugging flow where slugs of air and slugs of fuel leave the booster. The question then is which cylinder gets the fuel and which cylinder gets the air.
Put the right size Holley on your engine the first time and don't worry about it.
I have a Pro Systems 1000. 4150 carb. Supposed they could have modified it or maybe not. I never paid much attention to it. I seen it had a small home drilled in a 4 butter flies. I bolted it on and it ran great. I have these pics. Kim
Ok so this leads me to some questions. 1) why the middle one?
1) the middle gave me the most stable and flat fuel curve at cruise and WOT
1. Because lots of guys before you and me have figured out that in most performance applications, that’s when the fuel curve needs to change. Most blocks are over emulsified to keep the tune up safe. Remember, a change in air speed doesn’t always bring with it a change in air mass. So we have to manipulate the fuel (with air) to add or subtract air/fuel ratio.
Emulsion in a Holley block works when fuel level in the bowl drops. Picture the fuel dropping and uncovering each emulsion hole one at a time and it helps to visualize when each hole is changing the curve. It has to do with WHEN the curve changes.
