i have a ford 331 with manual and quickfuel brawler 650 doublepumper my half throtlle curve is flaty but my full throtlle(seconfaties) fuel curve starts at 2000-2500rpm at 10 afr and goes from 3500rpm to 12.5-13 and stays here until 6000rpm can i lean out low rpm 2000-3500 with the upper emulsion jet to put a bigger one in?(or drilling because i cant change them) there are 3 hemulsion holes each side excluded anti syphon jet
I have a question about where the fuel level is in the emulsion channels from idle to full power. Does the level of fuel get pull UP the circuit when air flow increases, or does it get pulled down as air flow increases? Where is it at idle? Does the fuel level in the float bowl change the level in the emulsion circuit?
My track warrior 850- I just pulled the metering block and the second from the bottom- is not drilled thru. It is blinded! Is that common practice and for what? Or is this a flaw??
Can you tune your fuel curve with the emulsion bleeds? So when you are doing your Dyno testing you can achieve a flat fuel curve. And what bleeds control what part of the fuel curve?
@@dambest1 Yes I understand that, but what I am asking is. If I want to lean out the middle of the fuel curve, which A.B. do I change and which way do I go. Bigger or smaller?
@@racerd9669 This is the black magic that no one wants to talk about. Really weird! I want to tune my blocks (fuel curve), but like you, no one will explain how each hole location and size will change the curve. I spoke to Holley for 3 hours the other day, getting nothing out of them either. SO, I guess we all have to do our own trial and error. I realize all engines are different, but there has to be a general 'rule of thumb' for what each hole location and size change does..!
@@huskynox1 Well I have done a lot of tuning w emulsion bleeds, and this is the way it works, everything is backwards and upside down. In other words if you want to lean the high rpm side you in-large the lower emulsion bleed. That will soften the signal and as the fuel level drops in the bowl you will be running on the lower bleeds and uncovering the upper bleeds.
Love it
i have a ford 331 with manual and quickfuel brawler 650 doublepumper
my half throtlle curve is flaty but my full throtlle(seconfaties) fuel curve starts at 2000-2500rpm at 10 afr and goes from 3500rpm to 12.5-13 and stays here until 6000rpm
can i lean out low rpm 2000-3500 with the upper emulsion jet to put a bigger one in?(or drilling because i cant change them) there are 3 hemulsion holes each side excluded anti syphon jet
that is a very cool idea
I have a question about where the fuel level is in the emulsion channels from idle to full power.
Does the level of fuel get pull UP the circuit when air flow increases, or does it get pulled down as air flow increases? Where is it at idle? Does the fuel level in the float bowl change the level in the emulsion circuit?
My track warrior 850- I just pulled the metering block and the second from the bottom- is not drilled thru. It is blinded! Is that common practice and for what? Or is this a flaw??
Can you tune your fuel curve with the emulsion bleeds? So when you are doing your Dyno testing you can achieve a flat fuel curve. And what bleeds control what part of the fuel curve?
There are removable emulsion bleeds for turning.
@@dambest1 Yes I understand that, but what I am asking is. If I want to lean out the middle of the fuel curve, which A.B. do I change and which way do I go. Bigger or smaller?
@@racerd9669 This is the black magic that no one wants to talk about. Really weird! I want to tune my blocks (fuel curve), but like you, no one will explain how each hole location and size will change the curve. I spoke to Holley for 3 hours the other day, getting nothing out of them either. SO, I guess we all have to do our own trial and error. I realize all engines are different, but there has to be a general 'rule of thumb' for what each hole location and size change does..!
@@huskynox1 Well I have done a lot of tuning w emulsion bleeds, and this is the way it works, everything is backwards and upside down. In other words if you want to lean the high rpm side you in-large the lower emulsion bleed. That will soften the signal and as the fuel level drops in the bowl you will be running on the lower bleeds and uncovering the upper bleeds.
What rear float do you use? Jet extension?
Depending on the G's
Jet extension when G's are low. When they are high, I turn carb sideways and use our Pro Blocks.
How can i get my quick fuel 4500 1150 to flow more without using a giant main jet
Its alcohol carb
You can't.