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Re: Need help tuning dominator for the street [Re: Thumperdart] #2538943
08/20/18 11:49 AM
08/20/18 11:49 AM
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
an8sec70cuda Offline
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an8sec70cuda  Offline
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Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
Originally Posted By Thumperdart
Originally Posted By an8sec70cuda
Mine has a PV on the primary side BTW. It is far from a blubbery mess.

Guess I'm the odd man out in this conversation...different observations about a couple different carbs I've had here.


Glad that works for you and apparently you got a good tune going............ thumbs Do you have a wide band to verify afr's at different engine speeds.......... beer Just asking to get info and understand how you verify that your 3-circuit is great on the street and has no blubbery or over rich issues cos if so, that's a good thing for sure just haven't seen it first hand.......... thumbs

No wideband needed. After 12 years of street and strip use and never fouling plugs and running great, I'm perfectly happy w/ it. Sounds crisp, clean off the footbrake or the transbrake. Part throttle driving around town, no stumbles, or running rough. Which is a lot more than I can say for some other carbs I've had to mess with.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Need help tuning dominator for the street [Re: an8sec70cuda] #2539025
08/20/18 02:01 PM
08/20/18 02:01 PM
Joined: Jul 2004
Posts: 19,317
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Thumperdart Offline
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Thumperdart  Offline
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thumbs And the mighty HEMI likes fuel so maybe it's happy as you said and needs it........... beer


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: Need help tuning dominator for the street [Re: Canam800] #2546479
09/06/18 12:27 AM
09/06/18 12:27 AM
Joined: Jun 2013
Posts: 63
Lanse,mi
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Canam800 Offline OP
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Canam800  Offline OP
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Lanse,mi
Got the carb back from Dominic and back on the car. What a difference. The car runs great. Way cleaner and smoother. Going to take it out and drive it more only got to put a few miles on it. When it stops raining here I will log some more miles and report back . Very happy so far. Night and day difference very responsive. Thanks Dominic.

Thanks Brandon

Re: Need help tuning dominator for the street [Re: Canam800] #2546520
09/06/18 01:42 AM
09/06/18 01:42 AM
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Thumperdart Offline
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Originally Posted By Canam800
Got the carb back from Dominic and back on the car. What a difference. The car runs great. Way cleaner and smoother. Going to take it out and drive it more only got to put a few miles on it. When it stops raining here I will log some more miles and report back . Very happy so far. Night and day difference very responsive. Thanks Dominic.

Thanks Brandon


Was wondering how it worked out as I haven't heard from you guys and I start twitching in anticipation............Very happy that you're happy......... thumbs


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: Need help tuning dominator for the street [Re: Canam800] #2546695
09/06/18 02:18 PM
09/06/18 02:18 PM
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Posts: 43,099
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
To many people think that carbs are no good, they do not realized that all carbs. are tuneable wrench Some are harder to tune than others shock whistling
I've told many racers and hot rodders to tune one circuit at a time , starting with the idle circuit and then move up to the transition circuit and so on up
With todays parts like wide ban O2 system you can dial most carbs in to perfection boogie wrench grin
The bad part is some guys say more about this subject than they understand shock work shruggy
My message on this is not all motors like the same tune up or parts so experiment and test, test and test some more until you get it exactly the way YOU like it up

Last edited by Cab_Burge; 09/07/18 07:24 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Need help tuning dominator for the street [Re: Thumperdart] #2546842
09/06/18 07:16 PM
09/06/18 07:16 PM
Joined: Nov 2011
Posts: 287
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Harry's Taxi 2 Offline
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Originally Posted By Thumperdart
Originally Posted By Canam800
Got the carb back from Dominic and back on the car. What a difference. The car runs great. Way cleaner and smoother. Going to take it out and drive it more only got to put a few miles on it. When it stops raining here I will log some more miles and report back . Very happy so far. Night and day difference very responsive. Thanks Dominic.

Thanks Brandon


Was wondering how it worked out as I haven't heard from you guys and I start twitching in anticipation............Very happy that you're happy......... thumbs


Thumper, could you give us the "recipe" you used for this application?


'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.

NOS-used when losing since 1940.

Re: Need help tuning dominator for the street [Re: Harry's Taxi 2] #2546855
09/06/18 07:36 PM
09/06/18 07:36 PM
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Posts: 19,317
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Thumperdart Offline
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Thumperdart  Offline
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They vary but if you send yours you can see for yourself my "recipe"........ biggrin beer

I look at the whole picture of the said vehicle and it's intended application and go from there but lets just say I tune like the baddest did in the 60's and 70's not like the monkey crap you see today........Less emulsion(2)normally and adjustable t-slot jets to keep em clean n mean till you wood the happy peddle.......... drinking

Last edited by Thumperdart; 09/08/18 01:34 AM.

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: Need help tuning dominator for the street [Re: Thumperdart] #2547213
09/07/18 02:36 PM
09/07/18 02:36 PM
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dogdays Offline
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Thumper needs to eat, too!

R.

Re: Need help tuning dominator for the street [Re: Canam800] #2547324
09/07/18 07:18 PM
09/07/18 07:18 PM
Joined: Nov 2011
Posts: 287
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Harry's Taxi 2 Offline
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dogdays, I understand that, but per thumpers own acknowledgment he was given quite a bit of free guidance in the past. I gotta eat too!


'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.

NOS-used when losing since 1940.

Re: Need help tuning dominator for the street [Re: Harry's Taxi 2] #2547340
09/07/18 07:50 PM
09/07/18 07:50 PM
Joined: Jul 2004
Posts: 19,317
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Thumperdart Offline
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Thumperdart  Offline
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Nothing is free I'm here to tell ya..........Hundreds and hundreds of dollars on gas, plugs, oil, tires etc to learn this stuff and am still learning new and unexpected stuff. My numbers below if you want to call me anytime.......... thumbs And let's just say that the "free" info isn't always accurate.............. beer

Last edited by Thumperdart; 09/07/18 07:51 PM.

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: Need help tuning dominator for the street [Re: Canam800] #2775707
05/18/20 12:59 PM
05/18/20 12:59 PM
Joined: May 2020
Posts: 1
Ashburs, Virginia, USA
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LayDeluca Offline
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LayDeluca  Offline
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Joined: May 2020
Posts: 1
Ashburs, Virginia, USA
Hello... i can say you need to try is setting the Closed Loop Compensation Limits down.
In my case I pulled the distributor to find that the gear is pretty worn on the bottom leading edges of the teeth. It looks like I need to figure out a way to get my distributor depth just a little deeper. This would explain my jumpy timing.

pcb manufacturing

Last edited by LayDeluca; 06/12/20 02:55 PM.
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