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Re: clogged idle air bleed
[Re: Quicktree]
#510084
10/29/09 07:29 AM
10/29/09 07:29 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
what will a clogged idle air bleed do?
A. make the idle circuit rich
B. stop the fuel to the idle circuit
What are your idle mixture screws doing?
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Re: clogged idle air bleed
[Re: Quicktree]
#510085
10/29/09 08:32 AM
10/29/09 08:32 AM
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Joined: Aug 2003
Posts: 684
Milwaukee
ToddP
super street
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super street
Joined: Aug 2003
Posts: 684
Milwaukee
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In order for the idle/transfer slot circuit to start it needs air. As an experiment, with the engine at idle, cover as many idle air bleeds with your fingers. What happens? Does the engine die because of lack of air? lack of fuel? The air bleed regardless of circuit,( idle/transfer slot, intermediate, or main well-booster) follows two rules. smaller- circuit starts slower ie time delay if you will. once it starts it keeps getting richer. larger- circuit starts quicker ie time delay is shorter. once it starts it tends to lean out. all these things happen on some sort of a curve. Air is needed to properly start the flow. My anwser is B. My  on tuning range for idle/transfer slot circuit ifr-.030" to .040" iab- .050" to .070" also a jet in the main body for the transfer slot works well slot jet .070" -.104"
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Re: clogged idle air bleed
[Re: ToddP]
#510086
10/29/09 10:50 AM
10/29/09 10:50 AM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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put your finger on the end of a straw that has water in it. what happens
Gen 3 power 6.22@110, 9.85@135
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performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: clogged idle air bleed
[Re: MR_P_BODY]
#510087
10/29/09 11:08 AM
10/29/09 11:08 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
what will a clogged idle air bleed do?
A. make the idle circuit rich
B. stop the fuel to the idle circuit
What are your idle mixture screws doing?
they just set there until I turn them  they are out 2 turns
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Re: clogged idle air bleed
[Re: sixpackgut]
#510088
10/29/09 11:11 AM
10/29/09 11:11 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
put your finger on the end of a straw that has water in it. what happens
is the air bleed the only place it can draw air?
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Re: clogged idle air bleed
[Re: sixpackgut]
#510089
10/29/09 11:22 AM
10/29/09 11:22 AM
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Joined: Apr 2004
Posts: 1,981
SE Michigan
TS3303
top fuel
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top fuel
Joined: Apr 2004
Posts: 1,981
SE Michigan
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Air Bleed Specifications 4150 HP and 4500 DOMINATOR HP LIST NO. Idle Int High R7320-1 53 N/A 28 R8082-2 71 N/A 37 R8896-1 53 63 40 R9375 39 N/A 25 R9375-1 53 63 34 R9377-1 40 61 28 R75010 40 61 33 R75011 49 61 28 R80186-1 73 N/A 36 R80340-1 71 N/A 34 R80496 72 N/A 32 R80496-1 74 N/A 32 R80498 55 N/A 30 R80507 73 N/A OPEN CHANNEL R80509 72 N/A 32 R80511 73 N/A 33 R80513 75 N/A 25 R80514 73 N/A 32 R80528-1 75 N/A 36 R80529-1 72 N/A 32 R80532 51 61 28 R80533 53 65 36 R80535-1 61 N/A 31 R80540 74 N/A 45 R80541 72 N/A 45 R80542 59 N/A 33 R80556 51 59 31 R80586 28 54 28 R80672 59 51 32 R80673 59 51 31 R80674 72 N/A 45 R80675 75 N/A 36 R80676 68 N/A 32 R80785 72 N/A 32 R82750 75 (primary) N/A 25 28 (secondary) N/A 36 AIR BLEEDS http://www.holley.com/data/TechService/Technical/Air%20Bleed%20Specifications.pdf
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Re: clogged idle air bleed
[Re: Quicktree]
#510090
10/29/09 11:46 AM
10/29/09 11:46 AM
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Joined: Nov 2004
Posts: 2,119
sc
tjmarcus1
top fuel
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top fuel
Joined: Nov 2004
Posts: 2,119
sc
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Quote:
Quote:
Yes, but it will not be pre-mixed with air. It will idle rich.
well I am running into just the oppisite problem. it is way lean on tip in and I found 2 rear bleeds completely clogged. 
why don't you clean the bleeds, then snap the throttle?
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Re: clogged idle air bleed
[Re: tjmarcus1]
#510091
10/29/09 05:13 PM
10/29/09 05:13 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Yes, but it will not be pre-mixed with air. It will idle rich.
well I am running into just the oppisite problem. it is way lean on tip in and I found 2 rear bleeds completely clogged.
why don't you clean the bleeds, then snap the throttle?
I will once I have a chance to take the carb apart and blow everything out actually it was the main bleeds that were clogged but it doesn't matter, I was just curious to see what people think about the fuel flow with a clog.
I myself lean to the side of it either slowing the fuel flow of the circuit or stopping it totally. I posted this hoping one of the carb guru's the frequent the board would chime in. but I guess thats not going to happen  guess you have to use their products to get any info. really tells me a lot about why they are on the board. I respect everyones opinion but I would really like to know what effect it has on a circuit. seems everyone is kind of divided on the issue.
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Re: clogged idle air bleed
[Re: Quicktree]
#510092
10/29/09 06:36 PM
10/29/09 06:36 PM
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Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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Quote:
Quote:
Quote:
Quote:
Yes, but it will not be pre-mixed with air. It will idle rich.
well I am running into just the oppisite problem. it is way lean on tip in and I found 2 rear bleeds completely clogged.
why don't you clean the bleeds, then snap the throttle?
I will once I have a chance to take the carb apart and blow everything out actually it was the main bleeds that were clogged but it doesn't matter, I was just curious to see what people think about the fuel flow with a clog.
I myself lean to the side of it either slowing the fuel flow of the circuit or stopping it totally. I posted this hoping one of the carb guru's the frequent the board would chime in. but I guess thats not going to happen guess you have to use their products to get any info. really tells me a lot about why they are on the board. I respect everyones opinion but I would really like to know what effect it has on a circuit. seems everyone is kind of divided on the issue.
well let's keep it bumped to the top and maybe they will eventually see it. 
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: clogged idle air bleed
[Re: sixpackgut]
#510093
10/29/09 06:36 PM
10/29/09 06:36 PM
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Joined: Jan 2003
Posts: 8,180
Detroit, MI
CokeBottleKid
master
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master
Joined: Jan 2003
Posts: 8,180
Detroit, MI
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Quote:
put your finger on the end of a straw that has water in it. what happens
That's not how they work.
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Re: clogged idle air bleed
[Re: dartman366]
#510094
10/29/09 06:49 PM
10/29/09 06:49 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Quote:
Quote:
Yes, but it will not be pre-mixed with air. It will idle rich.
well I am running into just the oppisite problem. it is way lean on tip in and I found 2 rear bleeds completely clogged.
why don't you clean the bleeds, then snap the throttle?
I will once I have a chance to take the carb apart and blow everything out actually it was the main bleeds that were clogged but it doesn't matter, I was just curious to see what people think about the fuel flow with a clog.
I myself lean to the side of it either slowing the fuel flow of the circuit or stopping it totally. I posted this hoping one of the carb guru's the frequent the board would chime in. but I guess thats not going to happen guess you have to use their products to get any info. really tells me a lot about why they are on the board. I respect everyones opinion but I would really like to know what effect it has on a circuit. seems everyone is kind of divided on the issue.
well let's keep it bumped to the top and maybe they will eventually see it.
believe me they have seen it
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Re: clogged idle air bleed
[Re: CokeBottleKid]
#510096
10/29/09 07:17 PM
10/29/09 07:17 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
put your finger on the end of a straw that has water in it. what happens
That's not how they work.
wel draw us a pic and show us how it works
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Re: clogged idle air bleed
[Re: Quicktree]
#510097
10/29/09 08:22 PM
10/29/09 08:22 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Im no carb expert, But what little I do know about them is that the air bleeds are there to add air into the fuel mixture for better A/F atomization. Your right the bowl is vented and that will allow the fuel to flow with clogged air bleeds. The finger over the straw analogy doesnt relate, because our straw has three holes in it. Dont worry, If Im wrong, the right answer will come shortly. Its always funner to point out that someones wrong then to give a correct answer in the first place mike
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Re: clogged idle air bleed
[Re: Sport440]
#510098
10/29/09 08:52 PM
10/29/09 08:52 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Im no carb expert, But what little I do know about them is that the air bleeds are there to add air into the fuel mixture for better A/F atomization.
Your right the bowl is vented and that will allow the fuel to flow with clogged air bleeds.
The finger over the straw analogy doesnt relate, because our straw has three holes in it.
Dont worry, If Im wrong, the right answer will come shortly. Its always funner to point out that someones wrong then to give a correct answer in the first place mike
sounds like a 3 sided question
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Re: clogged idle air bleed
[Re: Quicktree]
#510099
10/29/09 10:31 PM
10/29/09 10:31 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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if you put your fingures over the IABs, the motor will die
the fuel is supplied by a well, not the fuel bowl itself
Last edited by sixpackgut; 10/29/09 10:33 PM.
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Re: clogged idle air bleed
[Re: Sport440]
#510100
10/30/09 12:34 AM
10/30/09 12:34 AM
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Joined: Jan 2003
Posts: 8,180
Detroit, MI
CokeBottleKid
master
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master
Joined: Jan 2003
Posts: 8,180
Detroit, MI
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Quote:
Im no carb expert, But what little I do know about them is that the air bleeds are there to add air into the fuel mixture for better A/F atomization.
Your right the bowl is vented and that will allow the fuel to flow with clogged air bleeds.
The finger over the straw analogy doesnt relate, because our straw has three holes in it.
Dont worry, If Im wrong, the right answer will come shortly. Its always funner to point out that someones wrong then to give a correct answer in the first place mike
Sport hit it on the head, except the atomization... it's actually to modify the fuel delivery curve.
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Re: clogged idle air bleed
[Re: Quicktree]
#510101
10/30/09 10:51 AM
10/30/09 10:51 AM
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Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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Quote:
Quote:
Quote:
put your finger on the end of a straw that has water in it. what happens
That's not how they work.
wel draw us a pic and show us how it works
I included a picture of how they work in my post.
http://www.carcraft.com/howto/ccrp_0507_carb_tuning_tips_tricks/photo_12.html
The main does require the bleed to work, idle does not. It's to mix air with fuel and to keep the fuel from siphoning (both) and to provide additional atmospheric pressure to get the main to flow.
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