Dominator on the street, power valve or not - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech Dominator on the street, power valve or not

Print Thread

Page 1 of 2

1

2

Dominator on the street, power valve or not #570315 01/02/10 08:56 PM 01/02/10 08:56 PM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	I am running 8896-2 on the street. 500' 440-3 intake. Idle and midrange runs eye burning rich. I am running a progressive linkage and front butterflies open 1/3 before the rears start to open. Carb originally came with 1 to 1 soft progressive.I am running a 4.5 power valve in the front. plug in the back. Found my number 1 & 2 spark plugs black, back six are brown. Idle screws all 4 are set for highest vac. Could using a power valve be causing this? I have an air bleed assortment but have not changed anything yet. Wide open jetting is close. Its idle to about 3500 thats rich. Timing is at 36, have tried it all over the place, it seems to like 36. I am running an aftermarket 10degree bushing in msd with light springs. Idle timing is 26. Galen

Re: Dominator on the street, power valve or not [Re: galen] #570316 01/02/10 09:53 PM 01/02/10 09:53 PM
Joined: Nov 2003 Posts: 2,715 closer to Canadian beer! torkrules I'm neurotic
torkrules I'm neurotic Joined: Nov 2003 Posts: 2,715 closer to Canadian beer!	Quote: I am running 8896-2 on the street. 500' 440-3 intake. Idle and midrange runs eye burning rich. I am running a progressive linkage and front butterflies open 1/3 before the rears start to open. Carb originally came with 1 to 1 soft progressive.I am running a 4.5 power valve in the front. plug in the back. Found my number 1 & 2 spark plugs black, back six are brown. Idle screws all 4 are set for highest vac. Could using a power valve be causing this? I have an air bleed assortment but have not changed anything yet. Wide open jetting is close. Its idle to about 3500 thats rich. Timing is at 36, have tried it all over the place, it seems to like 36. I am running an aftermarket 10degree bushing in msd with light springs. Idle timing is 26. Galen Ran the same carb on my old 496. I found that the transfer slots were feeding too much fuel. That's a 3 circuit carb so as soon as you get into cruising rpm the transition tubes start to feed fuel making it too rich. I drilled the transfer holes bigger in the main body and hammered in a brass air bleed and opened up the hole to about .082". I ran a power valve. Since the carb has no vacuum port you will need to rig something up to read your idle/cruise vacuum and set up the power valve accordingly. I blocked the rear power valve off and jetted up accordingly. Start with air bleeds up to stock to start. You may want to lean the idle and transition circuit slightly leaner.

Re: Dominator on the street, power valve or not [Re: galen] #570317 01/02/10 09:54 PM 01/02/10 09:54 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	Whats your primary jetting

Re: Dominator on the street, power valve or not [Re: MR_P_BODY] #570318 01/02/10 10:04 PM 01/02/10 10:04 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	I had BIGS dominator on my 500" challenger with the indy 440-3. ran great on the street! 4.5 power valve / jet extensions. I was pulling 9"'s of vac was 86f and 94r last pass at the track and was lean at 13.8 at WOT still... went 10.6 @ 128.3 on pump gas before the rain came http://www.youtube.com/watch?v=gz-szQ1yrgY Mopar Performance

Re: Dominator on the street, power valve or not [Re: MR_P_BODY] #570319 01/02/10 10:06 PM 01/02/10 10:06 PM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	primary is 88 Mike

Re: Dominator on the street, power valve or not [Re: galen] #570320 01/02/10 10:07 PM 01/02/10 10:07 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: primary is 88 Mike Thats pretty fat for having a PV

Re: Dominator on the street, power valve or not [Re: MR_P_BODY] #570321 01/02/10 10:13 PM 01/02/10 10:13 PM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	Mike it came with 6.5s front and rear with 88 jets squared. Do the main jets effect the idle off idle mixture?

Re: Dominator on the street, power valve or not [Re: galen] #570322 01/02/10 10:18 PM 01/02/10 10:18 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: Mike it came with 6.5s front and rear with 88 jets squared. Do the main jets effect the idle off idle mixture? My 8896 came with 88s squared and no PV... off idle it starts on the mid

Re: Dominator on the street, power valve or not [Re: MR_P_BODY] #570323 01/02/10 10:41 PM 01/02/10 10:41 PM
Joined: Oct 2004 Posts: 5,618 long island NY A Ari440 master
Ari440 master A Joined: Oct 2004 Posts: 5,618 long island NY	my 8896 92-94 jets no p/v 1.39 9.85 - 137 mph

Re: Dominator on the street, power valve or not [Re: Ari440] #570324 01/02/10 11:04 PM 01/02/10 11:04 PM
Joined: Jan 2003 Posts: 5,989 Anoka County, MN L Leigh master
Leigh master L Joined: Jan 2003 Posts: 5,989 Anoka County, MN	OEM jetting. Your's is oem jetting at 88 primary and secondary with P/Valves. Where does the -2 suffix come from? There isn't a part # on Holley or Summit site? 5707200-HolleyCarbNumericalListing.pdf (195 downloads)

Re: Dominator on the street, power valve or not [Re: galen] #570325 01/03/10 12:15 AM 01/03/10 12:15 AM
Joined: Dec 2006 Posts: 554 Florida 65HemiCoronet mopar
65HemiCoronet mopar Joined: Dec 2006 Posts: 554 Florida	Quote: I am running 8896-2 on the street. 500' 440-3 intake. Idle and midrange runs eye burning rich. I am running a progressive linkage and front butterflies open 1/3 before the rears start to open. Carb originally came with 1 to 1 soft progressive.I am running a 4.5 power valve in the front. plug in the back. Found my number 1 & 2 spark plugs black, back six are brown. Idle screws all 4 are set for highest vac. Could using a power valve be causing this? I have an air bleed assortment but have not changed anything yet. Wide open jetting is close. Its idle to about 3500 thats rich. Timing is at 36, have tried it all over the place, it seems to like 36. I am running an aftermarket 10degree bushing in msd with light springs. Idle timing is 26. Galen I'd be very interested in what others are running, as I have the same setup and results on my 528 hemi. Plugs are very black, almost wet running at cruising speeds. I put larger primary air jets in to try and help some. Haven't really looked at anything else yet. Am wondering if it would be just better throwing in the towel with the dominater and going to 1000 or 950 style 4150 carb? Yeah, it's got a hemi........a REAL hemi.

Re: Dominator on the street, power valve or not [Re: Ari440] #570326 01/03/10 10:24 AM 01/03/10 10:24 AM
Joined: Nov 2003 Posts: 2,715 closer to Canadian beer! torkrules I'm neurotic
torkrules I'm neurotic Joined: Nov 2003 Posts: 2,715 closer to Canadian beer!	Quote: my 8896 92-94 jets no p/v I had mine down to 83 with the PV in the front and 88 or 90 in the rear with no PV. Mine came with 88 square and a powervalve. I thought that was too rich.

Re: Dominator on the street, power valve or not [Re: torkrules] #570327 01/03/10 11:13 AM 01/03/10 11:13 AM
Joined: Jan 2003 Posts: 17,918 Akron, Ohio ProSport I Live Here
ProSport I Live Here Joined: Jan 2003 Posts: 17,918 Akron, Ohio	I have a single 9375 1050 Dominator, jets are 96 squared with no power valve, but if I'm just cruising for a couple weeks without racing I throw a power valve in the front and jet the front down 8 numbers, makes it run MUCH smoother through 1st gear at slow speeds on the street. 1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual

Re: Dominator on the street, power valve or not [Re: torkrules] #570328 01/03/10 11:27 AM 01/03/10 11:27 AM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	1 irritating problem with 3 circuit carbs is that the point of tip-in for the intermediate is the position of the hole in the body vs. the sweep of the throttle disc (not RPM or vacuum). This means that different engines size, static CR, cams, plenum volumes etc. need not only a difference hole size, but the hole "bumped" a bit forward or back to change the throttle disc angle at which the hole is exposed to vacuum. IMHO some have already done this, but are not telling. If you examine a "suspect" carb, look for a partial bevel or flat spot on the disc's edge where it passes the holes... Boffin Emeritus

Re: Dominator on the street, power valve or not [Re: Leigh] #570329 01/03/10 11:52 AM 01/03/10 11:52 AM
Joined: Nov 2003 Posts: 2,715 closer to Canadian beer! torkrules I'm neurotic
torkrules I'm neurotic Joined: Nov 2003 Posts: 2,715 closer to Canadian beer!	Quote: OEM jetting. Your's is oem jetting at 88 primary and secondary with P/Valves. Where does the -2 suffix come from? There isn't a part # on Holley or Summit site? Ran into the same problem with mine. No one could tell me what the -2 meant. It was stamped "HP" on the side.

Re: Dominator on the street, power valve or not [Re: torkrules] #570330 01/03/10 01:23 PM 01/03/10 01:23 PM
Joined: Oct 2003 Posts: 339 Wisconsin B BIGS enthusiast
BIGS enthusiast B Joined: Oct 2003 Posts: 339 Wisconsin	The great Dominator idle and part throttle rich condition....This is an issue no doubt....we started to adress this issue in 2002 when we started really seeing allot of big "race" type engines being used on the street.... We made several attempts in the early years to try and bandaid this problem with so-so results....and we have been constantly making advances since... In 2007 we started working more with the 2 circuit theory that has been around for a long time but most didnt want to here about it because the "3 circuit" carb would make more power on the track....but remember were not talking 100% track cars here so if we gave up 10 HP somewhere and in trade gained a clean idle and cleaner cruise our customers would be happy with that..... We seen instant results with our 2 circuit carbs and knew it was going to be a great carb for street cars that cruise allot....and since then we have have not only made a great cruising/idleing carb but we also have it worked into our race line-up and they run just as fast as the 3 circuit stuff we build and have a clean cruise up the return road and in the pits..... So if you have an engine that needs the Dominator at wide open for Peak ET/HP you dont have to give up and go back to a 4150 to get a clean running carb....all the mods that you see other racers making to these carbs are on the correct path but it can make you pull your hair out..... Jesse @ BIGS!! Jesse & Lynn BIGS Performance Products Building Street/Strip Carburetors since 1974 www.bigsperformance.com

Re: Dominator on the street, power valve or not [Re: galen] #570331 01/03/10 01:31 PM 01/03/10 01:31 PM
Joined: Jan 2003 Posts: 31,021 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,021 Oregon	Quote: I am running 8896-2 on the street. 500' 440-3 intake. Idle and midrange runs eye burning rich. I am running a progressive linkage and front butterflies open 1/3 before the rears start to open. Carb originally came with 1 to 1 soft progressive.I am running a 4.5 power valve in the front. plug in the back. Found my number 1 & 2 spark plugs black, back six are brown. Idle screws all 4 are set for highest vac. Could using a power valve be causing this? I have an air bleed assortment but have not changed anything yet. Wide open jetting is close. Its idle to about 3500 thats rich. Timing is at 36, have tried it all over the place, it seems to like 36. I am running an aftermarket 10degree bushing in msd with light springs. Idle timing is 26. Galen Buy yourself some billet metering blocks so you can tune the carb. A Holley three circuit Dominator probably needs to have the intermediate circuit reduced by about 80% to run it on the street at part throttle. Get yourself a wide band setup so you know what your AF ratio is. An 8896 is not designed to be a street carb. If you're going to try to run one on the street then you need to at least be prepared to completely retune the fuel circuits. You are trying to make that carb do something it wasn't designed to do. Last edited by AndyF; 01/03/10 01:33 PM.

Re: Dominator on the street, power valve or not [Re: galen] #570332 01/03/10 02:39 PM 01/03/10 02:39 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	I`ve been street driving and racing my 8082-3 1050 for years and it has the best manners on the street w/a ft. pv in the 2.5-3.5 range jetted at 82 in the ft. and 90 in the rear. I have street driven it square jetted w/no pv and it was a bit rough down low but came alive when I nailed it.....not much fun and the plugs were hard to keep clean. I now race/drive w/a pv all of the time. 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 on the street, power valve or not [Re: Thumperdart] #570333 01/03/10 02:54 PM 01/03/10 02:54 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	Yeah the 8082-2 is a better dom for the street being that its a 2 circuit carb

Re: Dominator on the street, power valve or not [Re: MR_P_BODY] #570334 01/03/10 03:09 PM 01/03/10 03:09 PM
Joined: May 2009 Posts: 831 Missouri G galen OP super stock
galen OP super stock G Joined: May 2009 Posts: 831 Missouri	Which 2 circuit would you recmmend for the street. I can have mine modified but by the time I buy metering blocks and boosters to try and make the 3 circuit run right, it may just be time to change carbs

Page 1 of 2

1

2

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1