Re: why the hatred for the eddy 750 carb
[Re: hemi pwr]
#1577902
02/17/14 04:10 AM
02/17/14 04:10 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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You know alot of Mopars came with Carter AFB's and AVS's on them and ran great. My opinion is both Holleys and Carters/Eddy carbs will work very good. I will say on my 63 I really like the driveability the 850 Holley DP gives me but I would have no problem running two Carter/Eddy carbs. I hate to say this and I mean no offense by it by most of the time when I see someone that says they hate a certain carb it is usually that they dont know what they are doing and really have no bussiness working on carbs. It helps a ton to understand carbs if you want to work on them. Ron
Last edited by 383man; 02/17/14 04:11 AM.
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Re: why the hatred for the eddy 750 carb
[Re: dannysbee]
#1577907
02/17/14 02:55 PM
02/17/14 02:55 PM
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Joined: Jul 2003
Posts: 4,793 Holland MI Ottawa
2boltmain
master
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master
Joined: Jul 2003
Posts: 4,793
Holland MI Ottawa
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The consensus was and is the Edelbrock Performer 750 had a fault- a fault the Performer 500 and 600 do not have. What lends credibilty to this claim is the fact Edelbrock omitted the 750 cfm size for their Thunder series and chose to develop an 800cfm unit. The Thunder line is offered in 500 600 and 800cfm.
Keep old mopars alive.
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Re: why the hatred for the eddy 750 carb
[Re: 2boltmain]
#1577911
02/17/14 03:15 PM
02/17/14 03:15 PM
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Joined: Jun 2008
Posts: 10,847 Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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By the way- The two AVS models (650 and 800) flow 50 more cfm than there AFB counterparts. I suspect that this is because the AVS has a totally different secondary booster setup than the AFB, hence flowing 50 more cfm of air.
Which would pretty much shoot your theory out the window. On the primary side, AFB and AVS are the same. I bet Edelbrock just modified the existing 600/750 AFB castings to use the AVS style booster tube and spring door.
"I think its got a hemi"
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Re: why the hatred for the eddy 750 carb
[Re: Supercuda]
#1577912
02/17/14 04:24 PM
02/17/14 04:24 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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And the comment on air bleeds has been missunderstood. I have never monkied with air bleeds..is that better for you?
Not what you said and not misunderstood.
It becomes more evident the more YOU post that YOU do not know how to tune a carb, therefore the too rich out of the box Holley is perfect, for you.
actually non of them I've set up have run rich, including the three on this car. But carry on w/ your badash carb building self, since I don't know what I'm doing.
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Re: why the hatred for the eddy 750 carb
[Re: mopar65]
#1577913
02/17/14 04:28 PM
02/17/14 04:28 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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bottom line you can run TWO Carter/Eddys or ONE Holley, I guess the choice is yours. There is NO WAY to get the power of a 750DP/HP carb from one Eddy 750...or 800 Thunder. It's just not going to happen. The Out of the box Edddy 750 is not going to run well on a mild BB, even w/ the strip kit. However an out of the box Holley 750 will w/ a few turns of the screw driver. The Eddy 750 isn't bad, it's just not meant for all out performance.
Oh you don't say? funny i ran 10.52 at 125 in the 1/4 with a set of box stock edelbrock 750 carbs. all i did was set the idle and take out the choke plate.s. i had them on my 440 powered 65 Plymouth.sorry not trying to bash you in any way.just i think saying they wont work in a performance set up is not right. mopar65
right you needed TWO. Try it with one.
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Re: why the hatred for the eddy 750 carb
[Re: SomeCarGuy]
#1577917
02/18/14 01:54 PM
02/18/14 01:54 PM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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Run whatever carb you want to spend the time or dollars on.
That suggestion should have put this subject to bed three pages ago !!
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Re: why the hatred for the eddy 750 carb
[Re: DaveRS23]
#1577919
02/18/14 06:30 PM
02/18/14 06:30 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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The CarterBrocks are simpler carbs that have far fewer sizes with very few choices. But, when right, they are extremely dependable.
For tuning, Edelbrock has 32 different metering rods, at least 16 different jet sizes, 5 different step-up springs, and at least 3 different accelerator discharge orface sizes. The old Cater strip kit adds another 6 metering rods.
You are confusing tuning parts with carb choices. There are very few CarterBrock choices for a given size of carb when compared to the Holley platform.
That does not necessarily mean that the CarterBrocks are inferior, just that you are more likely to need to tune one rather than find a version closer to your needs OOTB.
But then, most guys don't know how to properly size a carb for their needs, let alone choose the best metering for their application or be able to tune it. So six of one, half dozen of the other.
Sorry, I was thinking of tuning combinations. I wish the CarterBrocks had different booster options and adjustable bleeds like you can get in the Holley style carbs. Living in Denver (6,000 ft altitude) none of the carbs seem to work well out of the box, and the issue is not getting the main jetting correct, it is the transition circuit between idle and when the mains take over. The Holley race carbs which have richer idle/transition seem to work better than their "street" carbs. Every Holley Avenger carb seems to have a lean idle/transition, but it is pretty easy to enlarge the idle restrictions in the metering block. I haven't tuned a Carter to the same level, but I think the idle air bleeds would have to be reduced in size for a richer transition circuit?
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Re: why the hatred for the eddy 750 carb
[Re: gdonovan]
#1577921
02/18/14 08:19 PM
02/18/14 08:19 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
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I haven't tuned a Carter to the same level, but I think the idle air bleeds would have to be reduced in size for a richer transition circuit?
Making the air bleeds smaller will pull the fuel out of the booster faster, easy enough to pull a set screw in the air bleed location and drill to what ever size you want and you can always change it later.
The 750 on my Duster has been tweaked like this on the secondary side, throttle response when the secondaries snap open is extremely crisp. I don't see why you can't do it on the primary side too.
I forgot that the idle bypass jet could be reduced in size too? I never tried these changes to richen up the idle/transition on a Carter, But I may have to play around with my old Carter 750 carb and see how it responds.
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