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Old 06-06-2014, 03:04 PM   #1
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Quadrajet Rebuild

I'm looking for someone in the Murfreesboro, TN area that has experience and the time to rebuild a Carter Quadrajet carburetor. It's in a '87 YJ with a Chevy 350 engine.

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Old 06-06-2014, 03:36 PM   #2
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Unless I'm badly mistaken Quadrajets were built by Rochester, not Carter.

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Old 06-06-2014, 04:40 PM   #3
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You are not mistaken they were made by Rochester.

If the carb has a ton of miles on it you would probably be bettter off getting a new carb. The throttle shaft and bushings wear with miles and need to be fixed which is not something most shops can do. So you end up putting a carb rebuild kit in it only to find it still runs poorly. There are shops that specialize in carb rebuilds that can do the work right. Google will point the way.
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Old 06-06-2014, 07:09 PM   #4
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Originally Posted by Aloof View Post
I'm looking for someone in the Murfreesboro, TN area that has experience and the time to rebuild a Carter Quadrajet carburetor. It's in a '87 YJ with a Chevy 350 engine.
Rochester Quadrajet. See those four bolts that hold it onto the intake, those are the tuning bolts. Undo all four, take it off and throw it in your neighbors yard. Now put a Holley on. Done
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Old 06-06-2014, 08:43 PM   #5
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Rochester Quadrajet. See those four bolts that hold it onto the intake, those are the tuning bolts. Undo all four, take it off and throw it in your neighbors yard. Now put a Holley on. Done
lol. I like Holley's too. Bad arse Carbs. And you won't get fat.
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Old 06-06-2014, 10:01 PM   #6
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If I'm not mistaken (it would not be the first time), around 1968 - '69 Rochester could not keep up with the volume requested from GM. So, GM had the Carter Corporation produce some Quadrajets to keep up with the demand.

I had heard the Quadrajets (when setup correctly) were better on steep inclines and rough trails due to the float/bowl design.

Holley's are great carburetors. I'm not opposed to changing. I was just hoping to save some money. I've found it's extremely difficult, though, to find anyone that has much experience with the Quadrajets.
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Old 06-07-2014, 12:58 AM   #7
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If I'm not mistaken (it would not be the first time), around 1968 - '69 Rochester could not keep up with the volume requested from GM. So, GM had the Carter Corporation produce some Quadrajets to keep up with the demand. I had heard the Quadrajets (when setup correctly) were better on steep inclines and rough trails due to the float/bowl design. Holley's are great carburetors. I'm not opposed to changing. I was just hoping to save some money. I've found it's extremely difficult, though, to find anyone that has much experience with the Quadrajets.
No. Its all Rochester. In the early years they had the 4-Jet. Carters afb's were a weak answer to Holley. Granted a Q-jet can run well and pour fuel in especially if its the 795, but it will never be a Holley.
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Old 06-07-2014, 05:51 AM   #8
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Aloof is correct.
Both Carter and Rochester made Q-jets. I know because I have rebuilt them both myself. They specifically say on the carb who manufactured them. Other than the name they are virtually identical. I ran them on my drag car not as fast as a Holley but more consistent and reliable and no power valve to deal with.
Make sure that who ever rebuilds your carb seals the well tube plugs in the bottom of the carb body they have a tendency to leak all the fuel out of the bowl when sitting overnight.
There is an excellent article on the Q-jet on Wikipedia.

http://en.wikipedia.org/wiki/Quadrajet

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