Rebuilt Rochester QuadraJets..............Are They REALLY That Bad?

[toobroketoretire]

In another forum I have seen a LOT of members bashing rebuilt Rochester QuadraJets because the rebuilts usually have parts in them that aren't the original parts such as jet sizes and metering rods. But yet these QuadraJet bashers have no problem installing an aftermarket carburetor like a Holley or Edelbrock that wasn't made for any specific engine/transmission/rear axle combination. So what is the problem with using a rebuilt QuadraJet that doesn't exactly match the original? If the rebuilt provides easy starting, good running, and good fuel mileage, who really cares if it's not exactly the same as it used to be? Back in the early 70's I can clearly remember mandatory disabling of the vacuum advance on California engines for NOX reasons but several years later that requirement was lifted; showing emission standards change from year to year so the carburetor manufacturers were constantly changing the jet and metering rod sizes during those early years. So I see nothing wrong with using a rebuilt QuadraJet as long as it works good.

 

[dougelam]

Toobroketoretire
Do you know what a fixed idle air bleed is?

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[toobroketoretire]

Toobroketoretire
Do you know what a fixed idle air bleed is?

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What is the point you're trying to make and how does it have anything to do with rebuilt QuadraJets? How about contributing something to this thread instead of trying to find fault with it?

 

[dougelam]

What is the point you're trying to make and how does it have anything to do with rebuilt QuadraJets? How about contributing something to this thread instead of trying to find fault with it?

MY POINT EXACTLY!!!!!!
You have no F-N clue what I'm talking about!
If you did you would never have started this post.

And you call yourself an engineer
Shame on you

Carb Class: Air Bleed Basics - Quick Fuel Technology

(I deleted what I wanted to say)


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[dougelam]

There now, since you are brighter than anyone else tell me what that hole is that the arrow is pointing to.


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[toobroketoretire]

Rebuilt QuadraJets

Millions of people all over the world have used rebuilt QuadraJets with no problems so why are they such a problem when used on C3 Corvettes? Please explain how the engine in a C3 is any different than the exact same engine in a Camaro, Chevelle, Nova, or Chevrolet pickup. Thanks to ignorant C3 owners passing on their uh "knowledge" to other ignorant C3 owners these ridiculous myths get started and once started and repeated they become fact. I have seen a number of shoddy rebuilds but I have also seen a number of shoddy NEW parts like most everything that comes from China. Just because something is labelled "rebuilt" doesn't mean it's crap. Or are C3 Corvettes above rebuilds?

 

[Antz81]

Millions of people all over the world have used rebuilt QuadraJets with no problems so why are they such a problem when used on C3 Corvettes? Please explain how the engine in a C3 is any different than the exact same engine in a Camaro, Chevelle, Nova, or Chevrolet pickup. Thanks to ignorant C3 owners passing on their uh "knowledge" to other ignorant C3 owners these ridiculous myths get started and once started and repeated they become fact. I have seen a number of shoddy rebuilds but I have also seen a number of shoddy NEW parts like most everything that comes from China. Just because something is labelled "rebuilt" doesn't mean it's crap. Or are C3 Corvettes above rebuilds?

It's just if you get one thats been badly done. A properly rebuilt quadrajet is great.

 

[LLC5]

Thanks to ignorant C3 owners passing on their uh "knowledge" to other ignorant C3 owners these ridiculous myths get started and once started and repeated they become fact. I have seen a number of shoddy rebuilds but I have also seen a number of shoddy NEW parts like most everything that comes from China.

You are the ignorant one, Genius.

You need to stop bashing countries and companies (specifically China and Summit) for your own inadequacies and ignorance.

 

[dougelam]

Millions of people all over the world have used rebuilt QuadraJets with no problems so why are they such a problem when used on C3 Corvettes?

How do you know this?
Having never worked in the repair field how would you have access to replacement parts data to back up your ridiculous claim!

Lucky Michigan isn't a tailpipe emissions certification state or our percentage of your millions would have never passed!

Please explain how the engine in a C3 is any different than the exact same engine in a Camaro, Chevelle, Nova, or Chevrolet pickup.

Now your just sounding like an idiot!

Do we really need to dig up the specs for each of these to explain this?

Thanks to ignorant C3 owners passing on their uh "knowledge" to other ignorant C3 owners these ridiculous myths get started and once started and repeated they become fact.

Look whos talking!
I'm 56 years old and have been in automotive since I was 19.
Been primarily a GM man my whole life working at Chevrolet/Buick/Pontiac/Cadillac dealerships which also covered GMC trucks. And yes that included Medium duty along with Isuzu while they in a partnership of GM.

It's amazing to me that EVERY TIME someone makes a statement like this that the person making that said statement is the sole source of said myth...

When someone shares their problem with us and gives their thoughts on what is going on it is you and only you that turns it into a myth

I have seen a number of shoddy rebuilds

It went from "millions" down to "a number of" and I'd be willing to bet they all came from your garage!

Just because something is labelled "rebuilt" doesn't mean it's crap. Or are C3 Corvettes above rebuilds?

Again you ignored my point
Here it is in a different way (unfortunately I can't use crayons)

Year = number of different models
1971 = 14
1972 = 18
1973 = 15
1974 = 20

Go ahead and by your "over the counter" rebuilt
You see what the odds are you get the correct one

So if ALL engines are the same why are there 14 different variations in 71?

Crap?Hard to say, but correct?
According to you yes

BUYERS BEWARE!!!


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[toobroketoretire]

Wrong Carburetor

Many C3 owners (and others) have discovered 40 years later their carburetors came off something else. But had they not searched their part or casting number they never would have known their carburetor wasn't the original. A carburetor is a carburetor and if it does the job it's intended to do then it's uh "doing the job", huh?

 

[dougelam]

Many C3 owners (and others) have discovered 40 years later their carburetors came off something else. But had they not searched their part or casting number they never would have known their carburetor wasn't the original. A carburetor is a carburetor and if it does the job it's intended to do then it's uh "doing the job", huh?

If that's your view then why in the hell do you keep telling everyone how to change "whats working fine" to your stupid way?

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[toobroketoretire]

There now, since you are brighter than anyone else tell me what that hole is that the arrow is pointing to.


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And what does that hole have to do with the quality of rebuilt Quadrajets? Please explain.

 

[toobroketoretire]

A properly rebuilt QuadraJet is great.

Thank you for admitting that. If a carburetor does the job it is intended to do then it has done the job it is intended to do.

Are we having fun yet?

 

[dougelam]

And what does that hole have to do with the quality of rebuilt Quadrajets? Please explain.

Now we are getting somewhere!
You don't know what it is and neither does a rebuilder.
So if it's needed and you don't get it = poor drivability and vice-versa

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[dougelam]

Oh and I already told you what it is, you totally missed it

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[toobroketoretire]

Now we are getting somewhere!
You don't know what it is and neither does a rebuilder.
So if it's needed and you don't get it = poor drivability and vice-versa

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Are you saying all the vehicles equipped with Quadrajets WITHOUT that special hole drove poorly?

 

[dougelam]

If you use a QuadraJet without fixed idle air bleeds on an engine that normally has them it will run richer than normal.

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[toobroketoretire]

It's Impossible

Many years ago I learned it's impossible to win an argument with an idiot.

 

[dougelam]

Must be when your mother took away the bathroom mirror!

Never again did you see the arrogance of your ways

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[LLC5]

Many years ago I learned it's impossible to win an argument with an idiot.

That is correct.

We have all learned that here from trying to converse with you.

Stupid is as stupid does.