Re: did some air bleed tests,?
[Re: Clanton]
#1077756
09/18/11 11:00 PM
09/18/11 11:00 PM
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Joined: Sep 2007
Posts: 876 Arizona
PolyDart
super stock
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super stock
Joined: Sep 2007
Posts: 876
Arizona
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Mine was stumbling when I tried to free rev the motor, or drive around the pits. Carb is a Pro-Systems 3 circuit Dominator with blocked powervalves. Patrick suggested running a 4.5 PV in the front and jetting down 10. Did that last night and the engine is running really clean now.
Last edited by ab7fh; 09/18/11 11:01 PM.
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Re: did some air bleed tests,?
[Re: 3404]
#1077760
09/19/11 08:37 PM
09/19/11 08:37 PM
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Joined: May 2011
Posts: 4,492 northern,Ohio,USA
Clanton
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Joined: May 2011
Posts: 4,492
northern,Ohio,USA
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Quote:
Shouldn't idle A/F be adjusted with the idle screws and not the air bleeds? also why are you hitting such lean numbers with the adjustments of the air bleeds?
i did open the idle air bleed because i could only turn it out 1/4 turn[8 screws on 2 4bbls] and it was still rich so now the idle screws are out 3/4 and i need the extra fuel for the intercooler effect on it.now for the lean # with the air bleed in the intermediat circuit i am not sure why but the reduction on bleed size and the result effect on the A/F ratio shows it has an effect so i am confident the readings are good for under load.i have results power braking the convertor from last yr and it was in the uppper teens a/f.i have a video of it and will get it.
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Re: did some air bleed tests,?
[Re: RemCharger]
#1077765
09/21/11 09:13 PM
09/21/11 09:13 PM
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Joined: May 2011
Posts: 4,492 northern,Ohio,USA
Clanton
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Joined: May 2011
Posts: 4,492
northern,Ohio,USA
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Quote:
Idle screws actually only meter the Volume of the emulsified idle mixture... The channel restriction changes the ratio...
so who has changed the channel restrictor or emulsion bleed and what was the result effect %?
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Re: did some air bleed tests,?
[Re: Clanton]
#1077770
09/23/11 11:56 AM
09/23/11 11:56 AM
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Joined: Nov 2004
Posts: 2,825 Sk. Canada
RemCharger
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master
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Sk. Canada
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Quote:
i am not sure where the main discharge is in the plate.
Needs bigger jets..
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Re: did some air bleed tests,?
[Re: RemCharger]
#1077771
09/23/11 12:22 PM
09/23/11 12:22 PM
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Joined: May 2011
Posts: 4,492 northern,Ohio,USA
Clanton
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Joined: May 2011
Posts: 4,492
northern,Ohio,USA
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Quote:
Quote:
i am not sure where the main discharge is in the plate.
Needs bigger jets..
i think i ment the intermediat discharge jet as shown above.my metering plate as above is not adjustable so maybe i will buy billet plates [34-77]
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Re: did some air bleed tests,?
[Re: Clanton]
#1077772
09/23/11 01:44 PM
09/23/11 01:44 PM
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Joined: Jan 2003
Posts: 1,369 Ohio
3404
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,369
Ohio
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Quote:
Quote:
Quote:
i am not sure where the main discharge is in the plate.
Needs bigger jets..
i think i ment the intermediat discharge jet as shown above.my metering plate as above is not adjustable so maybe i will buy billet plates [34-77]
Clanton, in my opinion you might want to have your carbs set up by someone who does that kind of work. With you being in Northern Ohio you have a few shops close by like APD in Sadusky and Dale Cubic (CFM) in Medina. Trying to run dual carbs is a bit of a different animal and like I said just my drilling holes may be a no no or a quick way to end up with 2 junk carbs. Air Bleeds and drilling holes is usually done after you have your carbs really close to being perfect and maybe something that is totally not necessary unless you are running pro-stock....
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Re: did some air bleed tests,?
[Re: Clanton]
#1077773
09/23/11 01:46 PM
09/23/11 01:46 PM
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Joined: Nov 2004
Posts: 2,825 Sk. Canada
RemCharger
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master
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Posts: 2,825
Sk. Canada
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Quote:
Quote:
Quote:
i am not sure where the main discharge is in the plate.
Needs bigger jets..
i think i ment the intermediat discharge jet as shown above.my metering plate as above is not adjustable so maybe i will buy billet plates [34-77]
Sorry, what i meant was,,, WHAT SIZE ARE THOSE JETS???
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Re: did some air bleed tests,?
[Re: 3404]
#1077774
09/23/11 02:24 PM
09/23/11 02:24 PM
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Joined: May 2011
Posts: 4,492 northern,Ohio,USA
Clanton
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OP
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Joined: May 2011
Posts: 4,492
northern,Ohio,USA
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Quote:
Quote:
Quote:
Quote:
i am not sure where the main discharge is in the plate.
Needs bigger jets..
i think i ment the intermediat discharge jet as shown above.my metering plate as above is not adjustable so maybe i will buy billet plates [34-77]
Clanton, in my opinion you might want to have your carbs set up by someone who does that kind of work. With you being in Northern Ohio you have a few shops close by like APD in Sadusky and Dale Cubic (CFM) in Medina. Trying to run dual carbs is a bit of a different animal and like I said just my drilling holes may be a no no or a quick way to end up with 2 junk carbs. Air Bleeds and drilling holes is usually done after you have your carbs really close to being perfect and maybe something that is totally not necessary unless you are running pro-stock....
Thank you 3404 and i agree i dont want to endup with junk carbs! the jets in the plate are 110. the high speed does ok at 12.8 a/f but needs more with those jets.
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