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did some air bleed tests,? #1077755 09/18/11 09:13 PM 09/18/11 09:13 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	but never made a pass at norwalk as i lost 1st gear pulling away from getting teched in on friday. so i have a 3circuit dom and used a LM-1 trying to tune in my pit space as much as i could to get things going to make a pass.the idle A/F is 12.8/1 and i change3d the bleeds in the int and got the A/F down to 16/1 but it still stumbles but the sypmtom i am trying to cure is with the intercooler it leans out to almost 18/1 but stays running now at least.i put a .023 bleed in[smallest]stock bleed is 68 and with that the A/F was about 20/1.i have the pv's blocked.any ideas? GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077756 09/18/11 11:00 PM 09/18/11 11:00 PM
Joined: Sep 2007 Posts: 876 Arizona PolyDart super stock
PolyDart super stock Joined: Sep 2007 Posts: 876 Arizona	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. 1970 Dart Resto-Race Project 1960 Dodge Dart Seneca Dual Quad 390 Poly

Re: did some air bleed tests,? [Re: PolyDart] #1077757 09/19/11 08:50 AM 09/19/11 08:50 AM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	thanks.i am sure that is good info but i have a roots blown engine.i have 2 holley 1250cfm 80532-1 carbs. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077758 09/19/11 06:44 PM 09/19/11 06:44 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i do understand that there is not much draw on the fuel with the engine not being under load or with it in gear and x amount of rpm.maybe one of you has warmed the engine and matched the A/F with load,no load info? GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077759 09/19/11 08:06 PM 09/19/11 08:06 PM
Joined: Jan 2003 Posts: 1,369 Ohio 3404 pro stock
3404 pro stock Joined: Jan 2003 Posts: 1,369 Ohio	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?

Re: did some air bleed tests,? [Re: 3404] #1077760 09/19/11 08:37 PM 09/19/11 08:37 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	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. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077761 09/19/11 08:44 PM 09/19/11 08:44 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	here is the video with the LC-1 http://www.youtube.com/watch?v=NIigVBZ8TME GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077762 09/19/11 11:29 PM 09/19/11 11:29 PM
Joined: Jan 2003 Posts: 1,369 Ohio 3404 pro stock
3404 pro stock Joined: Jan 2003 Posts: 1,369 Ohio	I would suggest a Holley carb performance book to get a good understanding how everything works and how they are all tied together. There are many things that IMO have to be looked at and air bleeds may be the last thing to try. Your video looks like trial under a load, so I think power valves and if the carbs are turned sideway maybe jet extensions on all 8 jets or raise the floats a bit? A vacuum gage showing how much vacuum you have at a cruise speed will help you choose the proper power valve. Idle screws richen the idle mixture when you open them and air bleeds will lean things out when you make them larger in size. If you have the butterflys open just a bit to much the idle circuit completely drops out and you start pulling on the main circuit.

Re: did some air bleed tests,? [Re: 3404] #1077763 09/20/11 08:51 AM 09/20/11 08:51 AM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	Thanks for the tips!it is allways good to review the carb function to help figure things out. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077764 09/20/11 12:40 PM 09/20/11 12:40 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	Idle screws actually only meter the Volume of the emulsified idle mixture... The channel restriction changes the ratio...

Re: did some air bleed tests,? [Re: RemCharger] #1077765 09/21/11 09:13 PM 09/21/11 09:13 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	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 %? GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077766 09/22/11 07:57 PM 09/22/11 07:57 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i talked to quick fuel and thay said i could only drill out my main feed starting by .010 bigger and the main discharge in the metering block by the same. 6837963-100_5890.JPG (51 downloads) GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077767 09/22/11 07:59 PM 09/22/11 07:59 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i am not sure where the main discharge is in the plate. 6837967-100_5893.JPG (50 downloads) GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077768 09/22/11 08:00 PM 09/22/11 08:00 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	or on this side. 6837969-100_5891.JPG (53 downloads) GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077769 09/22/11 08:51 PM 09/22/11 08:51 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i see in this pic the intermediat discharge is on the lower corners and is where i should drill. anyone have any input? 6838035-3circuit.jpg (59 downloads) GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077770 09/23/11 11:56 AM 09/23/11 11:56 AM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	Quote: i am not sure where the main discharge is in the plate. Needs bigger jets..

Re: did some air bleed tests,? [Re: RemCharger] #1077771 09/23/11 12:22 PM 09/23/11 12:22 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	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] GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077772 09/23/11 01:44 PM 09/23/11 01:44 PM
Joined: Jan 2003 Posts: 1,369 Ohio 3404 pro stock
3404 pro stock Joined: Jan 2003 Posts: 1,369 Ohio	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....

Re: did some air bleed tests,? [Re: Clanton] #1077773 09/23/11 01:46 PM 09/23/11 01:46 PM
Joined: Nov 2004 Posts: 2,825 Sk. Canada RemCharger master
RemCharger master Joined: Nov 2004 Posts: 2,825 Sk. Canada	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???

Re: did some air bleed tests,? [Re: 3404] #1077774 09/23/11 02:24 PM 09/23/11 02:24 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	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. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077775 09/23/11 02:45 PM 09/23/11 02:45 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i am wondering if i can drill my power valve blank in the pic above and put a jet in it or screw in adjuster to fattinup the intermediat. or all and i can use [Edited by Moparts - Family Friendly Site - Keep it clean] bleeds in the hs then. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077776 09/23/11 02:53 PM 09/23/11 02:53 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	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. I cant believe you need 110 jets on a PAIR of carbs unless your running E-85 and then it still doesnt sound right

Re: did some air bleed tests,? [Re: MR_P_BODY] #1077777 09/23/11 02:58 PM 09/23/11 02:58 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i know mr p.some info on the carbs,it came with 100 jet and power valves so i blocked them and jettup.it is a 1250cfm carb. like i said the high speed is close at 12.8 a/f and i have not touched those bleeds.just the intermediat is lean. Last edited by Clanton; 09/23/11 03:00 PM. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077778 09/23/11 03:01 PM 09/23/11 03:01 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: i know mr p.some info on the car,it came with 100 jet and power valves so i blocked them and jettup.it is a 1250cfm carb. I thought you had dual 4 barrels... so you only have a single

Re: did some air bleed tests,? [Re: MR_P_BODY] #1077779 09/23/11 03:14 PM 09/23/11 03:14 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i still have 2 1250's on it so i believe the lean condition because i an only using the pri side of the carbs reving it and load testing in gear.i have no down track data other than in the traps at 12.8 a/f. GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077780 09/26/11 01:33 PM 09/26/11 01:33 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	i am realy thinking about drilling powervalve blanks/plugs as an inrichment meter.i can start with the pri side starting small.030 and go up.the plugs are cheap.[3$] GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

Re: did some air bleed tests,? [Re: Clanton] #1077781 09/27/11 03:10 PM 09/27/11 03:10 PM
Joined: May 2011 Posts: 4,489 northern,Ohio,USA C Clanton OP master
Clanton OP master C Joined: May 2011 Posts: 4,489 northern,Ohio,USA	update:i talked to APD and i need to drill the hole next to the main jet in this pic and i will be able to come down in the airbleed eventualy so now the pv drill is no longer an option. 6844939-100_5893.JPG (62 downloads) GOTBOOST!New improved with Victor heads. http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/

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