Dominator 1050 Holley, to rich at idle......
#1667047
09/03/14 12:52 AM
09/03/14 12:52 AM
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Joined: Sep 2003
Posts: 7,512 Lebanon ,PA in the Susquehanna...
70Challengerse
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Lebanon ,PA in the Susquehanna...
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360 stroked 408 runs high 9's low 10's, I know I am asking alot but slowing it down alittle for street , wanna drive it... but its rich as hell on idle .. eye watering rich...I want to lean it out,just on idle if poss. eng is set to run, timing is at 32 full adv. 13.5 compression , full roller set up..w-5 heads... been playing with the idle bleeds, no luck , any suggestions..... sorry for the double post, should of put it here first....
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Re: Dominator 1050 Holley, to rich at idle......
[Re: 70Challengerse]
#1667054
09/03/14 10:54 AM
09/03/14 10:54 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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Quote:
P-body -yes they stall the engine one at a time Dartman- no power valve idle bleed is aprox .047 Cab ..pm me your # again (the amish love their pulley set up)lol.
The reason I asked that question was to see if your even on the idle circuit.. how far out are the mixture screws.. I usually can set them at 1/8 to a 1/4 turn out from the point where they start to stall the engine(the RPM drop point)
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Re: Dominator 1050 Holley, to rich at idle......
[Re: Thumperdart]
#1667057
09/03/14 01:49 PM
09/03/14 01:49 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
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Quote:
Quote:
I did try putting a larger idle bleed in.. made it worse..even after adjusting it.
Lean can burn your eyes as well................I ASSume you don`t have a wideband but how do the plugs look?
one way to tell is with your idle air screws, if you need to turn them out to gain a better idle then the bleed is too large making it lean and by screwing the idle air screws out will richen the circut, just the opposite if they are too small.
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: Dominator 1050 Holley, to rich at idle......
[Re: 70Challengerse]
#1667060
09/03/14 02:40 PM
09/03/14 02:40 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
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what is the largest bleed you have gone to, mine has #55 bleeds in the idle circuit, mine idles clean and the idle screws are out a little over 1.5 turns,, next question is.. does it take forever to warm up? when mine was origionally put on it seemed like hours to get to 170* which meant it was pig rich at idle.
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: Dominator 1050 Holley, to rich at idle......
[Re: 70Challengerse]
#1667062
09/03/14 03:05 PM
09/03/14 03:05 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
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I Live Here
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Mt. Vernon, Ohio
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Quote:
Went as far as .065 still rich, warms right up. Warmer the engine richer the engine, 1.5 turns out.. run like a raped ape just rich idle, what does the intermediate bleed do.
I run a 8082 2 circuit so I cannot tell you what effect those will have, you may have to do like theotherdodge said and restrict the ifr's, you may try and get ahold of AJ Casini here on the board as he did my dommy, I have also done some reading on the Horsepower Innovations web site, they seem to explain it pretty well,,just google it or google E-85 carb tuning.
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: Dominator 1050 Holley, to rich at idle......
[Re: Thumperdart]
#1667068
09/03/14 04:26 PM
09/03/14 04:26 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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There is another thing to check... since your not running a PV make SURE the gaskets on the plugs are seated right on the plates.. with a small drip on either can drive it fat(rich) and it might still be able to have enough control on the mixture screws... also a high float level will cause a rich setting
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Re: Dominator 1050 Holley, to rich at idle......
[Re: Thumperdart]
#1667070
09/03/14 05:34 PM
09/03/14 05:34 PM
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Joined: Jan 2003
Posts: 5,997 Anoka County, MN
Leigh
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Anoka County, MN
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Try a 2-circuit carb. An 8896 is more suited to help get the engine up on the converter. They weren't intended for a low throttle angle. On my drag car, an 8082 solved all my 8896 problems.
Last edited by Leigh; 09/03/14 08:25 PM.
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Re: Dominator 1050 Holley, to rich at idle......
[Re: AndyF]
#1667072
09/03/14 05:58 PM
09/03/14 05:58 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Quote:
A 3 circuit will idle just fine as long as the throttle blades aren't open too far.
Off idle is the big problem area for 3 circuit carbs. I usually have to lean them out by 50% on the intermediate circuit.
A wide band is highly recommended when trying to dial in a 3 circuit Dominator on a street car. I wouldn't even try to do it anyother way these days. You'll spend more money on plugs and gas than what a wide band would cost. I've seen a few engines ruined by carbs that are too rich and that is a big time expense.
Yes the 3 circuit carb(as in the 8896) is harder to tune but with a wide band O2 it is very doable.. you have to have the O2 to get the cruise right.. I found the same as Andy the the mid is SUPER rich and the mid bleeds help big time... one thing you have to remember is that each circuit adds on to the total... as in.. the idle adds to the mid, mid adds to the wot... no circuit turns off to start another
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