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Re: Dominator 1050 Holley, to rich at idle...... [Re: 70Challengerse] #1667067
09/03/14 04:13 PM
09/03/14 04:13 PM
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Thumperdart Offline
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Quote:

Quote:

Quote:

No wide band, actually is puffing smoke...bluish in color, not oil ....rich fuel plugs are slighty coated black..





Blue is generally oil not fuel..............



I know this, but it is fuel not oil, I don' understand it either.




Blue is NOT fuel period..............


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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
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
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

Re: Dominator 1050 Holley, to rich at idle...... [Re: MR_P_BODY] #1667069
09/03/14 05:14 PM
09/03/14 05:14 PM
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Posts: 19,317
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Thumperdart Offline
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Here`s a simple idle test; start the car cold and either have someone inside bring it up to about 2000 rpm`s or do it yourself and put one finger over an idle bleed and it should slightly rise or stay the same. If it falls or wants to die it`s rich if it raises it`s lean.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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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Anoka County, MN
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Leigh Offline
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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.
Re: Dominator 1050 Holley, to rich at idle...... [Re: Leigh] #1667071
09/03/14 05:40 PM
09/03/14 05:40 PM
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Posts: 31,002
Oregon
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AndyF Offline
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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.

Re: Dominator 1050 Holley, to rich at idle...... [Re: AndyF] #1667072
09/03/14 05:58 PM
09/03/14 05:58 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
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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