Dominator tunning

Posted By: MR_P_BODY

Re: Dominator tunning - 09/10/09 03:23 PM

yea mine also, I have the white cams coming. I don't see a chart to compare the difference though. what squirters are you running? was just wondering why they make only 2?

I'll check which squirter I have when I go back out
to the trailer.... pretty sure I still have stock in it

Posted By: Cab_Burge

Re: Dominator tunning - 09/10/09 03:44 PM

I have seen a lot of Dominatoor come with the rear pump arm maladjusted so it doesn't pump as soon as the throttle shafts move, the arm adjusters are shorten up so there is probally 1/4 inch or more of slop between the bolt and the arm on the pump

Posted By: Anonymous

Post deleted by Defbob - 09/10/09 06:57 PM

Posted By: 602heavy

Re: Dominator tunning - 09/10/09 10:33 PM

Fabricated the yellow pump cams many a time with a die grinder , enables you to tune the duration perfectly.

Posted By: Quicktree

Re: Dominator tunning - 09/10/09 10:47 PM

Quote:

Unless its a 750 Dominator, that carb is way too big for that little bracket motor. Try a 750.

duh you think

Posted By: MR_P_BODY

Re: Dominator tunning - 09/10/09 10:59 PM

Quote:

Unless its a 750 Dominator, that carb is way too big for that little bracket motor. Try a 750.

WOW.... and we have guys on here with about the same
CI and have 2 1150 doms on them... my 405 has run quicker
and faster with every larger carb I've put on it

Posted By: Anonymous

Post deleted by Defbob - 09/10/09 11:19 PM

Posted By: Cab_Burge

Re: Dominator tunning - 09/10/09 11:46 PM

Quote:

Quote:

Quote:

Unless its a 750 Dominator, that carb is way too big for that little bracket motor. Try a 750.

WOW.... and we have guys on here with about the same
CI and have 2 1150 doms on them... my 405 has run quicker
and faster with every larger carb I've put on it

I'm busting Tony's chops. Now I've busted yours.
BTW, you're right, its impossible to overcarb any smallblock.

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 12:05 AM

Don't knownhow any of you guys run the 8896 (3 circuit) without modifications , got four of these & every one of em runs pig rich on a 605" , i've since modified them to a 2 circuit , can't see the point in restricting the intermediate circuit to clean it up considering the main well is restricted anyhow , who gets good results from the 3 circuit dommies , OK they may run but they ARE pig rich.

Not starting a debate as this has been covered untold times , just asking who is happy with them.

Posted By: MR_P_BODY

Re: Dominator tunning - 09/11/09 12:15 AM

Quote:

Don't knownhow any of you guys run the 8896 (3 circuit) without modifications , got four of these & every one of em runs pig rich on a 605" , i've since modified them to a 2 circuit , can't see the point in restricting the intermediate circuit to clean it up considering the main well is restricted anyhow , who gets good results from the 3 circuit dommies , OK they may run but they ARE pig rich.

Not starting a debate as this has been covered untold times , just asking who is happy with them.

I havent had any problem with my 8896.... been on
my 405ci for 4 years(1 was converted to E-85) the
other 8896 is setting in my trailer... it ran fine
but I dont do alot of cruising... its mainly idle
or WOT with some cruising in the pits

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 12:16 AM

Quote:

Don't knownhow any of you guys run the 8896 (3 circuit) without modifications , got four of these & every one of em runs pig rich on a 605" , i've since modified them to a 2 circuit , can't see the point in restricting the intermediate circuit to clean it up considering the main well is restricted anyhow , who gets good results from the 3 circuit dommies , OK they may run but they ARE pig rich.

Not starting a debate as this has been covered untold times , just asking who is happy with them.

how much of a role does the intermediate circuit play on a race carb where it's either at idle or WOT?

Posted By: Bigcube

Re: Dominator tunning - 09/11/09 12:17 AM

Quote:

Don't knownhow any of you guys run the 8896 (3 circuit) without modifications , got four of these & every one of em runs pig rich on a 605" , i've since modified them to a 2 circuit , can't see the point in restricting the intermediate circuit to clean it up considering the main well is restricted anyhow , who gets good results from the 3 circuit dommies , OK they may run but they ARE pig rich.

Not starting a debate as this has been covered untold times , just asking who is happy with them.

Is it rich at full throttle or just part throttle? Mine was very rich for part throttle and needed a PV in the front and work on the metering blocks as well as lot's of air bleed tweaks to clean up. I wouldn't have known what to do but Dwayne (fast68plymouth) did

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 12:20 AM

Quote:

Quote:

Don't knownhow any of you guys run the 8896 (3 circuit) without modifications , got four of these & every one of em runs pig rich on a 605" , i've since modified them to a 2 circuit , can't see the point in restricting the intermediate circuit to clean it up considering the main well is restricted anyhow , who gets good results from the 3 circuit dommies , OK they may run but they ARE pig rich.

Not starting a debate as this has been covered untold times , just asking who is happy with them.

Is it rich at full throttle or just part throttle? Mine was very rich for part throttle and needed a PV in the front and work on the metering blocks as well as lot's of air bleed tweaks to clean up. I wouldn't have known what to do but Dwayne (fast68plymouth) did

what did you do other than adding a PV? and what did your jetting end up being?

Posted By: Bigcube

Re: Dominator tunning - 09/11/09 12:42 AM

Quote:

Quote:

Quote:

Don't knownhow any of you guys run the 8896 (3 circuit) without modifications , got four of these & every one of em runs pig rich on a 605" , i've since modified them to a 2 circuit , can't see the point in restricting the intermediate circuit to clean it up considering the main well is restricted anyhow , who gets good results from the 3 circuit dommies , OK they may run but they ARE pig rich.

Not starting a debate as this has been covered untold times , just asking who is happy with them.

Is it rich at full throttle or just part throttle? Mine was very rich for part throttle and needed a PV in the front and work on the metering blocks as well as lot's of air bleed tweaks to clean up. I wouldn't have known what to do but Dwayne (fast68plymouth) did

what did you do other than adding a PV? and what did your jetting end up being?

I didn't make the Mod's, Dwayne did. Inside the metering block there is some air bleeds that were added. I think it was to restrict fuel flow for the intermediate circuit. Jetting ended up staggered. I recall I was 92 sq with no PV and somewhere around 87 and 98 after the PV was added but don't quote me on that. It also took lot's of dinking around on the dyno messing with air bleeds to get the part throttle A/F ratio correct at part throttle. Don't even ask where we ended up, I recall I didn't have what it needed so some were drilled out to make what it needed.

Dwayne is the Da Man!

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 01:32 AM

I won't bore you with the mods i carried out to clean it up but it now runs crisp & clean throughout the rpm range , if you jet the intermediate circuit down then the main circuit won't flow enough fuel , kind of defeats the object don't you think? , as has already been said numerous times , these 3 circuits are maxed out over a 94/96 jet (main well restricted) , i'm talking real world here as i've tried a few of these 3 circuit dommies , they load up @ idle/transition , what's the point of trying to clean the plugs on the start line? , are you using a 3 circuit Quicktree? , if so i don't think a pump cam swap will get you sorted.

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 01:39 AM

Quote:

I won't bore you with the mods i carried out to clean it up but it now runs crisp & clean throughout the rpm range , if you jet the intermediate circuit down then the main circuit won't flow enough fuel , kind of defeats the object don't you think? , as has already been said numerous times , these 3 circuits are maxed out over a 94/96 jet (main well restricted) , i'm talking real world here as i've tried a few of these 3 circuit dommies , they load up @ idle/transition , what's the point of trying to clean the plugs on the start line? , are you using a 3 circuit Quicktree? , if so i don't think a pump cam swap will get you sorted.

yes it's a 8896-2

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 01:59 AM

Quote:

Quote:

yes it's a 8896-2

If i remember correctly these 8896-2s come out the box with 6.5 PVs back & front with 88 squared jetting , i removed the sec PV with MJs @ #92P/100Sec , i also fitted 2 circuit blocks with modifications to the main well, booster pins , cross over channel...........................

I would bet any 3 circuit out the box will run rich on 99% of motors.

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 02:08 AM

Quote:

Quote:

Quote:

yes it's a 8896-2

If i remember correctly these 8896-2s come out the box with 6.5 PVs back & front with 88 squared jetting , i removed the sec PV with MJs @ #92P/100Sec , i also fitted 2 circuit blocks with modifications to the main well, booster pins , cross over channel...........................

I would bet any 3 circuit out the box will run rich on 99% of motors.

this one had a PV in the front. I removed it and square jetted to 93s. I may have to go back and put the PV back. I want to try the white cam first just to see what happens. I reduced the maine to 91 square. looks like it will take a little work to dial it in.

Posted By: MR_P_BODY

Re: Dominator tunning - 09/11/09 02:18 AM

this one had a PV in the front. I removed it and square jetted to 93s. I may have to go back and put the PV back. I want to try the white cam first just to see what happens. I reduced the maine to 91 square. looks like it will take a little work to dial it in.

My 8896 3 circuit didnt have any PV and came with
it squared at 88, I ended up running 93 to 95 (depending
on the temp)

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 02:19 AM

Good luck

Just for fun (5 minutes work) , change out the 3 circuit metering block gaskets for 2 circuit & swap the intermediate/IAB bleeds over , bet it runs like a top.

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 02:20 AM

this is interesting, been many years since I messed with a dom. they were totally different back then. I guess I'll figure it out

sooner or later

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 02:23 AM

Quote:

Good luck

Just for fun (5 minutes work) , change out the 3 circuit metering block gaskets for 2 circuit & swap the intermediate/IAB bleeds over , bet it runs like a top.

swap them to what? what will changing the gaskets do?

Posted By: B1HEAD_USER

Re: Dominator tunning - 09/11/09 02:35 AM

Dominator conversion

Posted By: Bigcube

Re: Dominator tunning - 09/11/09 02:40 AM

Quote:

I would bet any 3 circuit out the box will run rich on 99% of motors.

Unless you make mods to the metering block it be rich at part throttle. You can get idle circuit and WOT working with jetting and air bleeds, part throttle is another story. Squared and no PV will never work for part throttle.

Mine is an 1150 3 circuit.

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 02:44 AM

Remove the metering block to main body gaskets & go fit a set of gaskets off a two circuit carb , (4150 gasket will do) , what this does is block off the intermediate circuit , reason being the two circuit has the hole already blocked off , no other mods are needed appart from removing the idle air bleed to the intermediate blkeed location , you have got the screw in bleeds?

It will just save you a bunch of time messing with the pump cams , most it will take is ten minutes , you can always put it back to baseline setting afterwoods.

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 02:49 AM

Quote:

Remove the metering block to main body gaskets & go fit a set of gaskets off a two circuit carb , (4150 gasket will do) , what this does is block off the intermediate circuit , reason being the two circuit has the hole already blocked off , no other mods are needed appart from removing the idle air bleed to the intermediate blkeed location , you have got the screw in bleeds?

It will just save you a bunch of time messing with the pump cams , most it will take is ten minutes , you can always put it back to baseline setting afterwoods.

yes it has screw in bleeds. I 'll try it. so you say to swap the idle and intermediate bleeds?

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 02:53 AM

Quote:

Dominator conversion

Interesting article , but to save Quicktree all the drilling & jetting with that modification he can just change the gaskets for now & that will show the problem lies in the intermediate circuit , tis quick & easy with no drilling , when he's happy he's nailed the overly rich situation he can then cut & drill the carb.

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 03:00 AM

Quote:

Quote:

yes it has screw in bleeds. I 'll try it. so you say to swap the idle and intermediate bleeds?

Just remove the 4 outboard bleeds & move them to the middle , in effect you will be removing the middle bleeds & replacing them with the outer bleeds , nothing will have been done to the carb that can't be put back to baseline settings again.

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 03:04 AM

Quote:

Quote:

Quote:

yes it has screw in bleeds. I 'll try it. so you say to swap the idle and intermediate bleeds?

Just remove the 4 outboard bleeds & move them to the middle , in effect you will be removing the middle bleeds & replacing them with the outer bleeds , nothing will have been done to the carb that can't be put back to baseline settings again.

I'll sure try it, nothing to lose.

Posted By: 602heavy

Re: Dominator tunning - 09/11/09 03:33 AM

Just remember to fit the two circuit blocks as well as the gaskets , if you don't want to mess around with gaskets & metering blocks just block off the intermediate circuit by plugging the 'tube' that exits into the throttle bore area , or just plug the 'tube' from the main body side , this is a straight tube so you can probably plug it with maybe a tooth pick , can be drilled out easily afterwoods if necessary.

Posted By: Leigh

Re: Dominator tunning - 09/11/09 09:53 AM

White Postion 1 = 18cc 2= 23cc.
Yellow position 1 = 39cc.
From Urich and Fisher 1976.

Posted By: Leigh

Re: Dominator tunning - 09/11/09 10:01 AM

Here is some info
"The 3 circuit carb is VERY helpful in transbrake cars, as this is the circuit to tune, to make the car come up on the brake cleanly. If it stumbles and coughs coming up on the brake, you open up the intermediate bleeds a little to lean it out. If the circuit is lean, the car usually just shuts off when you mat it and this needs a smaller bleed to richen the circuit. This is just a very handy tuning tool, as weather, converter changes and other elements can change how the car comes up on the brake and this keeps you from having to make major changes elsewhere.... As Al said, the 8896 is a good carb but I like the 9375 myself. I don't like a power valve in any race carb and the 9375, which is listed for a 2x4 app, has no power valve and is a touch leaner than the 8896.

Monte"

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 10:57 AM

wont swapping the intermediate and idle bleeds change the idle mixture?

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 10:58 AM

Quote:

White Postion 1 = 18cc 2= 23cc.
Yellow position 1 = 39cc.
From Urich and Fisher 1976.

thanks Leigh

I knew the white was smaller just didn't know how much. wont changing to a white cam reduce the rich condition?

Posted By: challenger451ci

Re: Dominator tunning - 09/11/09 07:54 PM

I have an 8896 3-circuit converted to E85 with a Quick Fuel kit. The intermediate circuit is PIG rich. I've gone from 0.063" bleeds to 0.098" bleeds and it's still FAT, 0.68Lamda(10:1 A/F) under part throttle. Can I play around with the feed restrictors in Quick fuel billet metering blocks to clean up the intermediate circuit?

Posted By: Anonymous

Post deleted by Defbob - 09/11/09 08:18 PM

Posted By: MR_P_BODY

Re: Dominator tunning - 09/11/09 08:39 PM

Quote:

I have an 8896 3-circuit converted to E85 with a Quick Fuel kit. The intermediate circuit is PIG rich. I've gone from 0.063" bleeds to 0.098" bleeds and it's still FAT, 0.68Lamda(10:1 A/F) under part throttle. Can I play around with the feed restrictors in Quick fuel billet metering blocks to clean up the intermediate circuit?

This is how my bleeds are set up on my 8896-2 3 circuit
from QF(they did my carb conversion to E-85)

outer bleed (which I believe is idle)... #42
middle (intermediate I believe).... #53
inner (high speed I believe).... #8
this is with 96 jets all around, No PV

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 08:44 PM

Quote:

Quote:

I have an 8896 3-circuit converted to E85 with a Quick Fuel kit. The intermediate circuit is PIG rich. I've gone from 0.063" bleeds to 0.098" bleeds and it's still FAT, 0.68Lamda(10:1 A/F) under part throttle. Can I play around with the feed restrictors in Quick fuel billet metering blocks to clean up the intermediate circuit?

Did you try switching to smaller jets? You're operating on the main jets at part throttle.

I just dropped my main jets from 93 square down to 91s and it improved 100%. I haven't had time to do the gasket swap deal yet but plan to do that. I will figure it out, will just take a little experimenting. I will probably end up getting the quickfuel billet metering plates.I would love to do the E85 deal but it's hard to find around here

Posted By: dc426

Re: Dominator tunning - 09/11/09 08:52 PM

Tony it's been my experience that they need to be jetted in the 86-89 range. I've had three dominators total on my motor.
DC

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 08:58 PM

Quote:

Tony it's been my experience that they need to be jetted in the 86-89 range. I've had three dominators total on my motor.
DC

I'll drop down a few more, which dom are you running?

Posted By: challenger451ci

Re: Dominator tunning - 09/11/09 09:08 PM

Quote:

Quote:

I have an 8896 3-circuit converted to E85 with a Quick Fuel kit. The intermediate circuit is PIG rich. I've gone from 0.063" bleeds to 0.098" bleeds and it's still FAT, 0.68Lamda(10:1 A/F) under part throttle. Can I play around with the feed restrictors in Quick fuel billet metering blocks to clean up the intermediate circuit?

Did you try switching to smaller jets? You're operating on the main jets at part throttle.

I'm at around 0.82 - 0.86 (12.0 - 12.6 A/F) Lamda at full throttle. It makes more power on the lower end of that scale with E85, and I'd like to fatten it up a bit more to see how much more, but can't stand to drive it around because of the intermediate circuit being so fat. I've tried going from 0.028" (came with kit) to 0.020" high speed bleeds to fatten up the big end without having to add more jet. This helped some, but it still stays in the low to mid 0.8's lamda at full throttle.
Mr. P body, that #8 high speed, is that 0.008"??? WOW! I guess I can keep going down on the high speed bleeds to fatten it up without adding more jet??
Sorry to hijack this thread, but my situation is pretty similar, so I thought I'd ask! Thanks!

Posted By: MR_P_BODY

Re: Dominator tunning - 09/11/09 09:20 PM

Mr. P body, that #8 high speed, is that 0.008"??? WOW! I guess I can keep going down on the high speed bleeds to fatten it up without adding more jet??
Sorry to hijack this thread, but my situation is pretty similar, so I thought I'd ask! Thanks!

I am pretty sure thats the number on the jet, so I
dont know what that is in .000..... I wrote those
numbers down months ago and I dont believe I used
my calipers on them... I'm sure its just the # on
the jet

Posted By: sixpackgut

Re: Dominator tunning - 09/11/09 10:05 PM

removing the intermediate bleed completely will lean it out.

Tony, i looked at the brown cams i have and none will fit a dom without being made to fit

Posted By: dc426

Re: Dominator tunning - 09/11/09 11:03 PM

I've run a 9375 and 2 customs.
DC

Posted By: Quicktree

Re: Dominator tunning - 09/11/09 11:47 PM

Quote:

removing the intermediate bleed completely will lean it out.

Tony, i looked at the brown cams i have and none will fit a dom without being made to fit

I was going to put a bigger bleed in it but I may just remove it and see what happens. summit sent me the wrong white squirters today

I really don't think it's far off. bringing down the main jets helped.

Posted By: sixpackgut

Re: Dominator tunning - 09/12/09 12:00 AM

Quote:

Quote:

removing the intermediate bleed completely will lean it out.

Tony, i looked at the brown cams i have and none will fit a dom without being made to fit

I was going to put a bigger bleed in it but I may just remove it and see what happens. summit sent me the wrong white squirters today I really don't think it's far off. bringing down the main jets helped.

i have modded many cams before also to give a slower, longer and less pump shot. a couple minutes on the grinder and then polish it up with sandpaper and the big yellow cam has alot of meat you can take out of it if you wanted to spend a little time doing so

Posted By: fourgearsavoy

Re: Dominator tunning - 09/12/09 12:05 AM

This is an interesting thread

I just installed a 4150 metering block and gasket on my 9375 primary side with 4.5 power valve and it seems crisp and clean idle to intermediate circuit.I don't have any AF readings but just looking at the plugs says I am moving in the correct direction.Some of those Chevy sites have good info on Dominator tuning

Gus

Posted By: Anonymous

Post deleted by Defbob - 09/12/09 12:57 AM

Posted By: Quicktree

Re: Dominator tunning - 09/12/09 12:58 AM

Quote:

Stop chasing your tail and send your carb to Quick Fuel and they will tailor the fuel curve to your engine.

thats no fun

Posted By: 602heavy

Re: Dominator tunning - 09/12/09 01:01 AM

Quote:

wont swapping the intermediate and idle bleeds change the idle mixture?

This is the whole point of swapping the bleeds over , the intermediate air bleed will now be the idle air bleed when you swap the 3 circuit blocks for the two circuit.

Down sizing main jets to cope with a rich part throttle (intermediate) will hurt the performance higher in the RPM range , if the motor runs rich @ part throttle duie to the intermediate circuit then ditch it , there's certain applications whereby a 3 circuit would be beneficial , most on here don't fall in that catogory.

The intermediate circuit will flow fuel well before main metering , going smaller on MJs will help regards part throttle stumbles but in no way will it clean it up , i'd rather have clean plugs on the start of the run @ clean plugs when pulling into the pits , the 3 circuit won't allow this.

Posted By: dusturbd340W5

Re: Dominator tunning - 09/12/09 01:02 AM

Quote:

Stop chasing your tail and send your carb to Quick Fuel and they will tailor the fuel curve to your engine.

Im kinda lazy so thats what I did called them told them what I had they sent me a carb I bolted it on and went racing it may be a little rich but I havnt messed with it yet since its been consitent

Posted By: Quicktree

Re: Dominator tunning - 09/12/09 01:03 AM

Quote:

Quote:

wont swapping the intermediate and idle bleeds change the idle mixture?

This is the whole point of swapping the bleeds over , the intermediate air bleed will now be the idle air bleed when you swap the 3 circuit blocks for the two circuit.

Down sizing main jets to cope with a rich part throttle (intermediate) will hurt the performance higher in the RPM range , if the motor runs rich @ part throttle duie to the intermediate circuit then ditch it , there's certain applications whereby a 3 circuit would be beneficial , most on here don't fall in that catogory.

The intermediate circuit will flow fuel well before main metering , going smaller on MJs will help regards part throttle stumbles but in no way will it clean it up , i'd rather have clean plugs on the start of the run @ clean plugs when pulling into the pits , the 3 circuit won't allow this.

I will try it tomorrow, didn't have time today.

Posted By: 602heavy

Re: Dominator tunning - 09/12/09 01:08 AM

Quote:

Quote:

Quote:

wont swapping the intermediate and idle bleeds change the idle mixture?

This is the whole point of swapping the bleeds over , the intermediate air bleed will now be the idle air bleed when you swap the 3 circuit blocks for the two circuit.

Down sizing main jets to cope with a rich part throttle (intermediate) will hurt the performance higher in the RPM range , if the motor runs rich @ part throttle duie to the intermediate circuit then ditch it , there's certain applications whereby a 3 circuit would be beneficial , most on here don't fall in that catogory.

The intermediate circuit will flow fuel well before main metering , going smaller on MJs will help regards part throttle stumbles but in no way will it clean it up , i'd rather have clean plugs on the start of the run @ clean plugs when pulling into the pits , the 3 circuit won't allow this.

I will try it tomorrow, didn't have time today.

Posted By: Bob_Coomer

Re: Dominator tunning - 09/12/09 01:25 AM

The intermediate circuit is very rich on those carbs at part throttle. Also the float level is pretty sensitive on those carbs. Adjust it low on the sight glass hole, like normal carb then run it down another 1/2 turn.
I drilled out the main body on those carbs before you could get these fancy metering blocks, and installed air bleed size jets...Pretty simple...Plenty of meat there. I measure the head of the bleed and used another bit slightlt larger in OD to counter sink the jet/bleed.
IMO cutting it down about .015-.018 makes a world of diff. I also opened the idle air bleeds up .008-.010. I ran these carbs (three diff 8896's) this way, and always ran great, and performed perfect at any throttle position. Your right in the ball park with 93-93 jets squared up. Both of these carbs came from the box with 88 jets and 5.5 Power valves. I have run them with and with out the power valve jetting accordingly, no difference at all with the above said mods.

Posted By: 602heavy

Re: Dominator tunning - 09/12/09 01:59 AM

I ran the 8896 hp with the intermediate circuit blocked off , problem was it would'nt fatten up over 94/96 jets , as most will know the idle well won't flow much over this jet size in any case , the intermediate circuit is equivalant to around 8 jets sizes , my understanding is if you restrict the intermediate circuit you add to the lean issues @ full throttle , this is the reason i went the 2 circuit route & modified the fuel/emulsion circuits , picked up some & made power up to a 100 MJ , adding a PV to the 3 circuit blocks won't help regards fattening it up when jetting over 96 , the main well just won't flow enough fuel out the box.

Posted By: Bob_Coomer

Re: Dominator tunning - 09/12/09 02:28 AM

Quote:

I ran the 8896 hp with the intermediate circuit blocked off , problem was it would'nt fatten up over 94/96 jets , as most will know the idle well won't flow much over this jet size in any case , the intermediate circuit is equivalant to around 8 jets sizes , my understanding is if you restrict the intermediate circuit you add to the lean issues @ full throttle , this is the reason i went the 2 circuit route & modified the fuel/emulsion circuits , picked up some & made power up to a 100 MJ , adding a PV to the 3 circuit blocks won't help regards fattening it up when jetting over 96 , the main well just won't flow enough fuel out the box.

If you decided to not run the intem circuit, why not just buy a two circuir dominator?
No wonder it was lean at WOT blocking off the Intem circuit.
Loosing the PV helps the ease of tuning, your removing variables to deal with over all IMO.
The box stock Dominators make good power right out of the box, with just minor jet changes, I have seen these carbs out perform those fancy so called $1200-$1400 Pro Raced preped carbs...The owners/buys feel like tools when they take off there fancy carbs, bolt on the shop Holley HP, and make just as much, and sometimes substantially more power than those high dollar jewels...LOL

Posted By: challenger451ci

Re: Dominator tunning - 09/12/09 12:13 PM

Quote:

removing the intermediate bleed completely will lean it out.

Tony, i looked at the brown cams i have and none will fit a dom without being made to fit

Quick Fuel told me to take them right out and see what happens. This will be my next step today if it's not raining....
I don't think it will be enough, so I'm trying to plan my next step. Maybe I'll just keep going smaller on the high speed bleeds to try to fatten up the full throttle without adding main jet.

Posted By: Quicktree

Re: Dominator tunning - 09/12/09 03:38 PM

well I just removed mine and it made a difference. instant recovery now, no loading up that I can tell. car is in the trailer headed to the alignment shop

Posted By: Leigh

Re: Dominator tunning - 09/12/09 07:57 PM

Quote:

Dominator conversion

Hey, thanks for that link. I'll be converting my 8896. As a 3 circuit, it's useless the way it is. A $700 paper weight.

Posted By: 602heavy

Re: Dominator tunning - 09/12/09 09:51 PM

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Quote:

I ran the 8896 hp with the intermediate circuit blocked off , problem was it would'nt fatten up over 94/96 jets , as most will know the idle well won't flow much over this jet size in any case , the intermediate circuit is equivalant to around 8 jets sizes , my understanding is if you restrict the intermediate circuit you add to the lean issues @ full throttle , this is the reason i went the 2 circuit route & modified the fuel/emulsion circuits , picked up some & made power up to a 100 MJ , adding a PV to the 3 circuit blocks won't help regards fattening it up when jetting over 96 , the main well just won't flow enough fuel out the box.

If you decided to not run the intem circuit, why not just buy a two circuir dominator?
No wonder it was lean at WOT blocking off the Intem circuit.
Loosing the PV helps the ease of tuning, your removing variables to deal with over all IMO.

Why spend the extra $$$$ on a 2 circuit when i had the 3 circuit to begin with? , i run a front PV on the street & remove @ the track for obvious reasons.

We all have different opinions on this which is a good thing.

If you remove the intermediate air bleed you may just as well block the intermediate cuircuit all together , if you run a big inch motor the 3 circuit blocks won't flow enough fuel as you've just jetted down 8 sizes by removing Intermediate bleeds , the 2 circuit mod works for me as i run a 605" motor which needs well over a 96 MJ.

Posted By: blownzoom440

Re: Dominator tunning - 09/12/09 10:15 PM

i wanted to sq jet my 1250 dom and it came with 100# and a 6.5 PV

to sq jet i doont think a 110 would be right for it.any ideas on what to go with?
holley 80532=1

Posted By: Leigh

Re: Dominator tunning - 09/13/09 12:40 AM

Got to page 17. It shows 97 square without p/v's

Attached File

5478757-HolleyCarbNumericalListing.pdf (85 downloads)

Posted By: blownzoom440

Re: Dominator tunning - 09/13/09 01:56 AM

Thanks !i forgot the info was there.

Posted By: Quicktree

Re: Dominator tunning - 09/13/09 08:28 PM

well I swapped the gaskets and it wouldn't even run