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Check the fuel pump pushrods in the '73.
67 imperial holley carburetor issue
- Thread starter 78Brougham
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Please don't put an Edelbrock on it their junk! best to go with an QFT carb and a lokar kickdown set up. I had an Edelbrock on mine absolutely garbage replaced it with a QFT 780 CFM carb and I've never had another issue it's amazing coupled with the 24 hour customer support!! and the superior build quality it's just the right choice Edelbrock has no place on quality vehicles
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commando1
Old Man with a Hat
About half way through, I gave up trying to read it.
Don't text and drive.
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Edelbrocks work great right out of the box, many of us use them with hardly a complaint. Are there better? Yes of course. I have found that the 1406 600 CFM worked better on my Imperial than the 1411 750 CFM and I've read some negatives on the net about the 1411. My next carb will probably be a Thunder series over the Performer but I'd like to hear more about the QFT's.
Well I had an Edelbrock on my car prior and off the line it was an absolute pig no matter how much I tuned it or dial it in.
So I gave up and found the best carburetor I could which was a quick fuel technology (QFT) even though I'm running a 780 CFM it is responsive in every situation. The only downside is I had to use A lokar kickdown setup
But with the dual heavy duty springs you have a much tighter stronger feel in the pedal.
It's an amazing set up and I don't think I would do it any differently if I could.
So I gave up and found the best carburetor I could which was a quick fuel technology (QFT) even though I'm running a 780 CFM it is responsive in every situation. The only downside is I had to use A lokar kickdown setup
But with the dual heavy duty springs you have a much tighter stronger feel in the pedal.
It's an amazing set up and I don't think I would do it any differently if I could.
70bigblockdodge
Old Man with a Hat
I would have to say that as someone mashes a fuel pedal all day the last thing I want to do on the weekend is having a gas pedal I have to manhandle IMO not a selling point. And of course there is the categorizing of "I can't get it to work so it must be junk". One thing this forum has taught me or maybe I am just becoming a old fart also is do not insult other peoples stuff/things just cause it did not work for you. You cannot generalise that all eddy carbs are junk, and we did not make them. I don't mean to single you out because there are some others with low post counts making blanket statements instead of just contributing a thought about you experiences. I am guilty of this also but I am learning.
An Edelbrock that doesn't work right out of the box, and work very well is very rare, unless you chose the wrong application (usually going with too large a CFM rating - it kills low end). I personally don't use them because I am a purist, although I will replace a factory Holley with a Carter AVS because they were both used on the 440s from the factory and the old Holleys really can't be rebuilt anymore without a miracle taking place. But I have helped others install the Edelbrocks, and I have never had a problem. They actually run a little better than the factory stock setups, probably due to emission constraints back in the day. But the originals can be richened up a little too.
And for partz availability the Edelbrock is pretty much an exact cope of the old Carter AVS so rebuilding an AVS with Edilbrock innerdz iz ah given. My .02, Jer
It's OK to be scared of change but you guys need to realize straight drop on things aren't always the the best
I've given Edelbrock plenty of chances but they're poor manufacturing fit and finish and overall quality is horrible.
And the funny part is my 780 ca and the funny part is with my QFT 780 carb my car runs perfect it doesn't bog down at all doesn't blow a even whisper of smoke.
Do you want something done right or do you warning done cheap ?
I've given Edelbrock plenty of chances but they're poor manufacturing fit and finish and overall quality is horrible.
And the funny part is my 780 ca and the funny part is with my QFT 780 carb my car runs perfect it doesn't bog down at all doesn't blow a even whisper of smoke.
Do you want something done right or do you warning done cheap ?
70bigblockdodge
Old Man with a Hat
I want it done cheap but that's me. Thanks for the info now i understand where you stand with them instead of losing interest in your post because of the they are junk comment. If you want to rant because something is pissing you off thats fine just let us know rant over.
Now question for you what size engine is the QFT 780 on? Do you know what size shooter (acc pump nozzle) is on yours? Just wondering for reference, I am thinking of one in the future but still up in the air.
I really have no idea what you are talking about concerning poor manufacturing quality from Edelbrock? "Horrible"? Their products have very good quality. And they are not just a shot in the dark drop on, since as stated by Jer that the Edelbrock carburetors are copies of the Carter AVS, which was used by Chrysler a great deal, and when sized close to the factory sizes for the particular applications, they run well. I will not accept your harsh criticism without some better examples. For example, if Edelbrock carburetors are so poor from your extensive experience with them from what you say, why did you even bother to put one on your car instead of just going straight to the QFT? I have had extensive experience with the Edelbrocks and have never found them wanting. I worked for Chrysler engineering in the fuel systems department for nearly 10 years, so I have some clue what I am talking about. Edelbrock didn't get their reputation by producing junk as you state. I don't see anyone coming to your defense with other examples, either. I really don't respect denigrating other people or products without a good basis, although it has become a national pastime. It just doesn't help.
78Brougham
"Chump"
All I know is that my 67 never ran better thanks to all the advice from my buds here on the forum! Also, I'll be putting a new Eddy on my 73 in the spring too! Sorry minuette...
What should I look for in the push rod on my fuel pump Matt? And why?
What should I look for in the push rod on my fuel pump Matt? And why?
Assuming your present carburetor runs pretty well except for the hot restarting issues, the fuel pump push rod would not be a culprit in your restart problem. Worn (shortened) push rods can cause other problems though such as poor performance, die outs, surging and others since the carburetor isn't getting all the fuel it needs under certain conditions since the fuel pump stroke is not as much as it should be.
I called them poorly manufactured because their valve covers rub on the push rod assemblies the carburetors are horrible no matter how much you adjust them their water pumps like to shed the belts and I didn't put the Edelbrock on it the previous owner did
But due to the Poor manufacturing that I've dealt with I would never use one again swapping over from an Edelbrock to a quick fuel Carb I save $100 in gas per 700 km.
But due to the Poor manufacturing that I've dealt with I would never use one again swapping over from an Edelbrock to a quick fuel Carb I save $100 in gas per 700 km.
OK, so what vehicle and engine were the Edelbrock parts on - and you say they were installed by the previous owner, not you? So you really do not have any direct experience with the Edelbrocks and further, you know nothing about what might have been done to the carb by the previous owner, nor whether it was the proper application. I really doubt Edelbrock valve covers will interfere with a stock rocker arm setup either - never heard that complaint (are the rocker arm assemblies aftermarket for some reason, if you even know)? It seems you easily indict a product when you have no real basis to do so. You are alone in your criticisms, at least so far. So everyone is wrong but you. Fine.
70bigblockdodge
Old Man with a Hat
There are 3 adjustments on a eddy/carter afb style carburetor, 4 if you include the acc pump rod, all of which are idle related so set it and forget it. The thunder series has a air door spring adjustment, which once the bog is gone there is not much more. Beyond that opening it up and changing jets, metering rods, and springs are more of tuning than adjustments. Also a QFT is far from new its basis was designed in the mid fifties.
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One of the first symptoms that reared its head in the fuel pump pushrod issue was increasingly hard starting when hot. I think it was a combination of vaporization of fuel in the carb after the engine was shut down and the fact that at cranking rpm the short throw on the fuel pump was having a hard time refilling the carb. At cruising speeds the engine turns enough rpm that the shortened rod can keep up with demand. The affects were most obvious during hot starts and under acceleration. My pushrod ended up almost 3/8" shorter from wear by the time I discovered it.
You say I don't have direct experience with Edelbrock's I do (10,000 km on carb )they are junk in my opinion that's why they aren't on my cars anymore no mechanic in the land could get them to work properly. Quick fuelbtechnology carbs I put 10,000 km on one of those as well Quick fuel technology carbs without a hiccup it was absolutely brilliant
but I'm done trying to explain I told you my experience with them and has been poor therefore has lost my business
The best use for an Edelbrock is a doorstop ( my opinion and a lot of others )
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70bigblockdodge
Old Man with a Hat
Alright fine you don't like Eddy anything. What size engine is this on and what size shooter in the primary side. I am trying to compare to where I am out with what I changed in my Holley on my car. Can't have too much info.
78Brougham
"Chump"
I own 9 cars. 7 are classics. I drive them about 600 to 800 miles each per year. It would take me a lifetime to put that kind of miles on that carb. As far as fuel mileage? I don't give a rat's ***. Lots of people ask, or I should say, try to bait me into an argument, on how many "gallons per mile" I get, well you know what, I just shake my head and walk away. They are obviously just jealous and you can't argue with an idiot.
Like I said before, thanks to the help and advice I got here from my friends on this site, I'm very happy with my Eddy. My 67 Imperial is running like new!
Like I said before, thanks to the help and advice I got here from my friends on this site, I'm very happy with my Eddy. My 67 Imperial is running like new!
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