AFB Carb Experts...

TxDon

Well-Known Member
Joined
Apr 24, 2018
Messages
737
Reaction score
900
Location
McKinney, TX
I need some help. My Monaco has the 383 4V with a Carter AFB which I need to rebuild. The number stamped on the lower front flange is 3858S but the shop manual says my car should have a 4131S. A list from one of the carb shops shows the 3858S as being from a 1965 413. Does anyone know what the difference, if any, be between these two carbs, and would there be any problem using what I have?

If I can use the 3858S, any recommendations on suppliers of a good rebuild kit and a new choke pulloff? Thanks for any help you can offer.

DSCF2302.JPG


DSCF2532.JPG
 
Assuming that we are not talking show car here, that AFB will work fine for your application. The 413 carb and 383 carb share the same casting. The jetting if it is still original to the carb on you car is probably a little richer than what came with the 383, but I doubt you will notice much difference.

www.rockauto.com has the kits and should also have the choke pull off.

Dave
 
Richer is better with todays fuel. our cars like a liitle more fuel and a little more ignition timing.
 
My suspicion is that the AFB kits are all pretty much the same for several years. NOT just for one carb number, but many. Jetting/rods might be different, but that won't affect what kit it takes. Be sure to get a thick base gasket, whether in the kit or if you have to get one separately.

Is this operation just for general principles or for some performance complaint? Just curious.

CBODY67
 
My suspicion is that the AFB kits are all pretty much the same for several years. NOT just for one carb number, but many. Jetting/rods might be different, but that won't affect what kit it takes. Be sure to get a thick base gasket, whether in the kit or if you have to get one separately.

Is this operation just for general principles or for some performance complaint? Just curious.

CBODY67
The car runs pretty good but the carb has a small leak on top plus I think the acc. pump is shot. Someone crutched it by bending the choke rod so the choke plate does not open all the way, I also doubt the choke pulloff works. Needless to say it runs a bit rich.
 
I just bought a rebuild kit for mine from: Welcome to Mike's Carburetor Parts - Your Number 1 Carburetor Parts Store They are a little bit more expensive, but they have very good parts. They even had a brand new brass float for mine. Very fast shipping too. If you are going to do the job, spend a little extra on it and do it ONE time!
Mike's is on my list. Have you actually done the rebuild? If so what was the result? Did you buy the choke pulloff they had listed as optional?
 
Mike's is on my list. Have you actually done the rebuild? If so what was the result? Did you buy the choke pulloff they had listed as optional?
If you can wait long enough, I am doing the rebuild sometime around July 4th and I can certainly let you know how it went. But so far I can tell you that they have good service, I even called them with questions and they had no problems answering them. My choke pulloff was good, so no.
 
The choke rod is designed to be "bent" a little and then a little more for fine-tuning. There might be a picture in the service manual of basically what it needs to be. In 70 degree F ambient temps, the thermostat should "just close" the choke plate lightly against the air horn. With age, the choke thermostats can get tighter, so using the factory setting can make it a bit rich. Might need to adjust it a notch or two leaner than its factory setting (on a used thermostat). Main thing is that at the stated temp, the choke is just closed. When the engine starts, then the pull-off should open it to the stated amount in the service manual. That bent link is designed to be tweaked a little, too.

IF the choke thermostat doesn't get heat reasonably quick, then the choke opening can be delayed, which can make things a little rich as the engine doesn't really need the additional fuel to run. I generally like to set things as lean as possible and cold starts still be reliable. Just my own orientation on that. Getting the base choke thermostat set in this 90+ degree temps we have down here might be a little trick, so I'd lean more toward 1 notch leaner than the spec with the existing choke thermostat (used). Make sure the pull-off dimension is correct, though. It might take a little tweaking before it's all done this winter, though.

CBODY67
 
I did my rebuild with a kit from mikes carb parts, and all of the gaskets matched well, and I had no problems. They were sturdy parts, and my car runs better.
 
I did my rebuild with a kit from mikes carb parts, and all of the gaskets matched well, and I had no problems. They were sturdy parts, and my car runs better.
Thanks Jon. The carb is my next priority, I'll give Mike's a call.
 
I recently sent my 65 Monaco Carter AFB to Bowen Carburetor in Bristol, PA to be rebuilt. I was really satisfied with the rebuild. $230-$240 dollars including shipping. I had the carb back in less than 7 days. They did a full rebuild and tested/tuned the carb on a Mopar engine. Highly recommended. Saves a lot of headaches.

Bowen Carburetor | Home

20180307_123935.jpg


20180307_123954.jpg


20180307_123925.jpg
 
I recently sent my 65 Monaco Carter AFB to Bowen Carburetor in Bristol, PA to be rebuilt. I was really satisfied with the rebuild. $230-$240 dollars including shipping. I had the carb back in less than 7 days. They did a full rebuild and tested/tuned the carb on a Mopar engine. Highly recommended. Saves a lot of headaches.

Bowen Carburetor | Home

View attachment 196378

View attachment 196379

View attachment 196380
Boy that looks great! I'm too cheap though, I at least want to try a home rebuild before I spend that much.
 
Boy that looks great! I'm too cheap though, I at least want to try a home rebuild before I spend that much.
Understood. I just don't have the time or patience anymore to do it myself and then get the idle/mixture dialed in. No excuses, was just the better route for me. Also, I'm not a fan of aftermarket carbs so it worked out well for me. The OEM Carter AFB more than adequate and a great carb altogether.
 
This is all very good Carb. Info thanks for sharing
 
I don't think these afb's came with tags, the number is stamped on the front lower base passenger side, see my picture at the top.
 
I have seen several Triangle shape aluminum tags on many Mopar Carter carbs. They come in different colors and have the carb.number and other spec.too.
 
Back
Top