Quadrajet part ID

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Mar 17, 2020 | 02:41 PM

72blue

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Heel & Toe

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From: Mobile, Al

Quadrajet part ID

This plastic/epoxy thing fell off my carburetor, Anyone know what it's for and should I be concerned? Pic is from spare carburetor.

Mar 17, 2020 | 02:55 PM

lars

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From: At my Bar drinking and wrenching in Lafayette Colorado

The photo is of a junk, commercially rebuilt carb. The "epoxy thing" is where they improperly smeared some epoxy over the top of the forward bowl plug in a failed attempt to seal it. They do junk work like that and smear epoxy on the plugs whether they're leaking or not. If the plug was not leaking, the epoxy smear is irrelevant and should be removed. If the plug was leaking, the epoxy does nothing to fix the problem, and it should be removed to fix it right. But I wouldn't waste my time on that carb - it is a good candidate for the recycle bin or trash can...

Lars

Mar 17, 2020 | 03:07 PM

7T1vette

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From: Crossville TN

If the carb has been running OK on your car, you just need to make sure that the area uncovered by the epoxy piece is NOT leaking. Or, if it is leaking, attempt to fix it properly...or at least with something that will seal petroleum fluids. Whether that area leaks or not will not change the behavior of the carb; but it will make the engine SAFE to run.

Mar 17, 2020 | 11:24 PM

lars

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From: At my Bar drinking and wrenching in Lafayette Colorado

In my 40 years of building and setting up Q-Jets, not once - not one single time - have I seen one of these commercially rebuilt carbs run correctly. Many of them "run." But they do not run "correctly." Maybe there is one out there that actually runs "right." In the 1,000+ carbs I've rebuilt, I've just never seen it. Maybe I missed one.

Lars

Mar 17, 2020 | 11:44 PM

7T1vette

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From: Crossville TN

You rebuild them correctly, Lars; and we are the beneficiaries of your skills. But there are a million operating Q-Jets out there which are still "functional". Just because some junk epoxy fell off this guy's Q-Jet is not a justifiable reason for him (or anyone else) to throw a 'functional' Q-jet in the trash. Not gonna' happen...........

Mar 18, 2020 | 09:22 AM

72blue

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Heel & Toe

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From: Mobile, Al

Thanks for the reply guys, good info. So far no leaks.

Mar 18, 2020 | 10:56 AM

lars

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From: At my Bar drinking and wrenching in Lafayette Colorado

Quote:

Originally Posted by 7T1vette

I'm not telling him it's junk because the epoxy fell off. The carb pictured is a junk, hacked, commercially rebuilt carb that cannot be economically repaired or brought to good operating condition due to the bad workmanship, altered parts, damaged parts, and incorrect parts in the carb. I'm giving him solid, factual technical & financial advise: Get rid of it and find another carb in rebuildable condition.

For info on what is done to these commercial carbs to destroy them, e-mail me for my "Commercially Rebuilt Q-Jets" tech paper. It typically takes 2 to 3 times the cost to repair & rebuild one of these carbs as it does a non-hacked carb, making it financially impractical to attempt to save them. Typically, they are in such bad shape that I can't even use them as parts carbs - there are no usable parts on them. I can also send you info and guidelines for finding a good, rebuildable Q-Jet.

Lars
V8FastCars@msn.com

Last edited by lars; Mar 18, 2020 at 11:07 AM.

Mar 19, 2020 | 08:32 PM

7T1vette

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From: Crossville TN

I understand and agree with everything you are saying.....except that it's still his carb and [apparently] it has been working well enough for him. Almost all of us have components on our car that are not in pristine...or even in 'good-as-stock'....condition. But, we 'get along' and are happy with what we have. When it goes "bad enough", we try to make it better.