I need a carb!!!

[Daniel1381]

What carb should I go with on my 76cj 5 inline 6cyl??

 

[IOPort51]

what are you replacing? and why?

What carb should I go with on my 76cj 5 inline 6cyl??

 

[Daniel1381]

i am running a stock carb.... and just not happy with it and would like to upg to something newer

 

[IOPort51]

There are a couple of "stock" options, which do you have?

 

[Daniel1381]

how can i tell what i have?? ill look when i get home...i know its a single barrel... someone told me to go to a double barrel

 

[IOPort51]

If you have a one and want a two, the first thing to do is find and install a two barrel manifold. And in your case maybe an exhaust manifold as well. I think the 76 is just like the 77 in as much as the intake and exhaust bolt together under the carburetor at the EGR valve. Take a couple of pictures of the carb with the breather off. Let us see what you have. You would be a good candidate for an MC2100 ford two barrel but it will be a bit more than a weekend job.

how can i tell what i have?? ill look when i get home...i know its a single barrel... someone told me to go to a double barrel

 

[al2ride]

What carb should I go with on my 76cj 5 inline 6cyl??

I'm happy as a lark with my Weber 38, but it takes some patience to get it right, but once you do...there is nothing better for the exception of fuel injection. Like it was mentioned before, find out if you have a 1bbl or 2bbl intake.

Post some pictures if you can.

 

[rlitavecz]

I'm happy as a lark with my Weber 38, but it takes some patience to get it right, but once you do...there is nothing better for the exception of fuel injection. Like it was mentioned before, find out if you have a 1bbl or 2bbl intake.

Post some pictures if you can.

I am thinking of installing a 38 Weber on my Jeep. What did you do to "get it right?"

 

[al2ride]

I am thinking of installing a 38 Weber on my Jeep. What did you do to "get it right?"

I had a hard time getting rid of an intake leak. It was caused by different size flanges on both intake/exhaust manifold. I ended up having to grind on the exhaust manifold to get it to match the intake manifold. Once that was taken care of, the Weber 38 was dialed in as it should...about 1/4 turn out on the idle screw, and about 1 turn out on the mixture screws.

I went with .060 idle jets to achieve that. I experimented with the whole range from .045 all the way to .065, and the .060s ended up being the best.

I also had a problem with the choke side of the carb. Initially, the electric coil wasn't hooked up by the manufacturer. After taking care of that, I had intermittent choke problems were it wouldn't close or open all the way. It drove me nuts until I figured out that one of the butterflies was rubbing against the housing. I had to carefully dremel were it was rubbing and now it starts and functions perfectly even in freezing temps.

Very happy with it and the throttle response is awesome, and I have an automatic.

Not sure if I needed a regulator or not, but I put one in from the beginning. It's a Holley fuel pressure regulator set at 3.5

Not that it will affect you, but I also had to get rid of the square air cleaner that came with it. I ended up buying an adapter for the carb that allowed a cold air intake re-routed to the driver's side of the engine. I had to do that in order to install a power brakes assembly. With the square air filter, the brake master cylinder rubbed against it.

Hope this helps, and ask any questions.

 

[Rescue Diver]

If you have a one and want a two, the first thing to do is find and install a two barrel manifold. And in your case maybe an exhaust manifold as well. I think the 76 is just like the 77 in as much as the intake and exhaust bolt together under the carburetor at the EGR valve. Take a couple of pictures of the carb with the breather off. Let us see what you have. You would be a good candidate for an MC2100 ford two barrel but it will be a bit more than a weekend job.

Ditto on the Motorcraft 2100. It's not a "newer carb" like you said you wanted, but they're very good and reliable, super easy to rebuild, very cheap and easy to find at just about any bone yard with an ealy 1970's ford truck, they are really easy to tune, and they don't require a fuel pressure regulator like the Webber has to have. Rebuild kits for them are under $15 at O'Reilly.

Like IO said, if you're switching from a stock Carter 1bbl you'll need a new intake, and exhaust manifold to swap in a 2bbl. I've never come across a carb adapter to put a 2bbl on a 1 bbl intake, and even if someone makes one, it would run like .

You'll also have to engineer your own throttle cable linkage, but it's pretty easy.

 

[Rescue Diver]

i am running a stock carb.... and just not happy with it and would like to upg to something newer

What makes you unhappy with your 1bbl? Stock inline 6 cylinders are made for low RPMs so they don't need a big carb, and the CFM difference between the stock Carter YF 1bbl carb and the 2bbl that AMC also used in those years is so slight that you probably won't even see a noticable performance gain.

If it's just running rough, why not rebuild your 1bbl? I ran my Carter 1 bbl for a long time when I first built my Jeep and it worked great! The only reason I changed carbs is because I did a 4.0 head swap and my old 1bbl intake wouldn't work with the new head.

 

[Dan86CJ7]

question...was gonna replace my carter on m y 86 CJ7 ...what exactly do these 2100 come out of and what is needed to install....air cleaner,ect...was gonna do a weber 38 but funds are tight so if i could get my friend at the junkyard to nab me a carb.

 

[Rescue Diver]

question...was gonna replace my carter on m y 86 CJ7 ...what exactly do these 2100 come out of and what is needed to install....air cleaner,ect...was gonna do a weber 38 but funds are tight so if i could get my friend at the junkyard to nab me a carb.

Old ford trucks. Early 70's. Try and get one from a straight 6 so it'll be the smaller CFM carb. If I remember correctly, the carb with the number 108 in the little circle stamp is the best fit for a AMC 258 i6 / 4.2l . You'll need an adapter to mount it, and you'll have to engineer your own throttel linkage, but these carbs work great, they don't require a fuel regulator like the webber needs, and they're really cheap and easy to buy and rebuild.

 

[subaruski]

are there any positive effects for fuel economy when changing out an to an aftermarket carb?

 

[Rescue Diver]

are there any positive effects for fuel economy when changing out an to an aftermarket carb?

Not really. Any properly tuned carb will get you similar mpg. Either you have the correct jets(fuel air ratio) and the right CFM's(carb size) or you don't.