That Weber arrives as a complete bolt on package.
It is a breeze to mount and tune, the storied difficulty arises from users not following a few basic steps that are clearly listed on two simple instruction documents.
If you maintain the OEM type dual outlet fuel filter along with the fuel return line you'll not need a FRP.
If you want to insure that you never have an issue with bowl overfill a Viton tip needle assembly is available...15 bucks.

 

This Jeep is going to be street driven 99% of the time. (1987 4.2L YJ) So I'm more concerned about Fuel economy and reliability than offroad performance.

Which would be the better carb?

A huge point to make here.....
1. The Weber you have listed is a Weber 32/36 DGEV carburetor. What this means is, you will use the one 32mm barrel untill half throttle when you will start to open the second 36mm barrel.
2. The Motocraft is two barrels opening at the same time. These barrel diameters are ever so slightly larger than the two barrels on your original Carter BBD.

With this in mind, the natural choice, for "economy" is the Weber 32/36 DGEV, this is 1/3 the size of your original BBD or the Motorcraft.

With that comparison in mind, my question is, "Why would you want to replace your original Carter BBD with ANYTHING smaller.
The Weber K551-38, using the 38-DGES and the Motorcraft 2100 is "virtually" the same size as your Carter BBD and will get better mileage than the original.

While you will get some slight performance gains with a little better mileage with the Weber 32/36 DGEV, I HIGHLY recommend the Weber 38-DGES or the Motorcraft 2100. These are very very close to the size you are taking off your Jeep.

I get 19MPG with my 38-DGES on my CJ on the road and a whole lot less in the dirt with my foot into it.

This is a big decision, Good Luck
UPTILLNOW

 

A huge point to make here.....
The Weber K551-38, using the 38-DGES and the Motorcraft 2100 is "virtually" the same size as your Carter BBD and will get better mileage than the original.

While you will get some slight performance gains with a little better mileage with the Weber 32/36 DGEV, I HIGHLY recommend the Weber 38-DGES or the Motorcraft 2100. These are very very close to the size you are taking off your Jeep.

I agree with going with the Weber 38. I've owned both. Both are good performers, nothing that will throw you back in the seat though. My Weber 32/36 was a peice of cake to tune and bolted right. The Motorcraft was a pain in the butt to tune. I liked the Weber but my YJ runs 95% of the time on sand dunes and it just wasn't enough power. I wish I would have gone with the Weber 38. I'm in the middle of a engine rebuild and going over the top, a Holley Truck Avenger 470cfm 4-barrel. :2thumbsup:

Get the Weber 38! :thumbsup:

http://cgi.ebay.com/ebaymotors/Webe...tem3f080d4f8cQQitemZ270718029708QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

 

Go with the MC, parts are everywhere, easy to rebuild when needed. Also they can take some extreme angles off road. The guy on ebay redoes The MC carbs just for jeeps and has great customer support, he can even address your emission needs.

 

Weber

Stay away from the Weber!!!!! I have a 32/36 and it worked fine until I added the cam and header. You absolutely must have access to a dyno to get the jetting and float adjustments to work. I also 'fiddled' with the linkage to bring in the secondary in just off 1500 rpm. Still won't idle, and I'm loosing in the top end, although I have tons of torque.
Put the Weber on E-Bay and buy the Motorcraft!

 

Weber Carb

My Jeep already has a Weber carb on it...had it when I bought it. It's the 38mm DGES from what I can tell looking at it but haven't taken the air breather plate off it to get a better look yet. Appears to not be the progressive linkage though.

What have people's experiences with this been as far as tuning and getting it to pass emissions testing? Utah is probably not as strict as Cali, but pretty strict and it doesn't pass right now.

 

My Jeep already has a Weber carb on it...had it when I bought it. It's the 38mm DGES from what I can tell looking at it but haven't taken the air breather plate off it to get a better look yet. Appears to not be the progressive linkage though. What have people's experiences with this been as far as tuning and getting it to pass emissions testing? Utah is probably not as strict as Cali, but pretty strict and it doesn't pass right now.

I am running the weber38 with no issues I am also in Utah (salt lake). I changed the jets in mine and adjusted the a/f mixture with the emissions machine where I worked at the time. It runs great have not touched it since. I'm not running a fpr either

 

I cant say much about the MC but I went with the Weber 38 for my CJ. It was very easy to tune and set up and I've been happy with it. Also no FPR.

 

I replaced the Carter with a Weber 32/36 dgev. I stick to the street and its a great carb. Tunning isn't hard you just need to know what you are doing. Timing is also crucial. I don't run a fuel regulator

http://www.webercarbsdirect.com/product_p/wk551.htm
- This is what i got plus its a lot cheaper than whats on ebay

 

I switched to the MC from the ebay guy, along with air cleaner and rear pull linkage. Love it so far. I had issue with first carb he sent, but he replaced without question.

 

 

I'm going to have my mechanic check for vacuum leaks, check the fuel pressure and tune it just so I know it's on a good baseline.

 

hey guys ive been reading through this and am learning towards the webber 38. can anyone point to a link of some sort of their personal preference?

 

https://www.ebay.com/itm/REDLINE-We...-Carter-BDD/264483411834?epid=1426243606&hash=item3d9470977a:g:nbkAAOSwyrlcZIbg

 

I purchased and ran a MC2150 from Gronk (ehrmannmp) on the Stock intake / exhaust. It was flawless. Great set up.

I got Clifford intake and exhaust and switched to the Weber 38-DGES. After a bit of tuning, buying jets, etc- It is running pretty well.

Honestly - I am seriously considering getting adaptor and going back to the 2150. just a lot easier in not dealing with the fuel pressure and BS.

Either way - you will not be disappointed.

 

I am about where you are on this, getting ready to swap to an mc2150 myself. I chose the 2150 due to availability (my buddy has one laying around). I am also familiar with the Motorcraft carb. I have zero experience with a Weber so I can't speak for them. My experience with a well tuned 2150 is that they are great Carbs, with a properly adjusted choke it makes cold morning starts a pleasure. Just pump the throttle twice and let her rip.

 

Thats a lot of money when the MC2100 works just as good for a fraction the price.

 

The Motorcraft 2150 works BETTER for less. Keeps tune better, much better air filtration choices, less finicky, 20 dollar rebuild when needed, better on angles like hillclimbs.

I have used both. The Motorcraft was clearly better.

I wasn't even going to post because I really don't care which carb anyone uses.
But if it was a friend, I'd urge them to use the motorcraft.

All you have to do is see how many thread there are on Weber carbs running poorly. Lots
Very few threads on Motorcraft problems.

 

i pretty content with mine thus far! thanks everyone

 

im just curious, but where would i purchase a motorcraft 2150 ? i just want to look into it

 

Anywhere carburetors are normally sold.
There are different sizes.
You want a 2150 with 1.08 venturi size.
From there it needs to be jetted to your usual elevation for best results. But it does have an aneroid elevation adjustment system (automatic) for driving in mountains.

If you get one and know your basic elevation, I can get you pretty close. Napa carries jets (or they used to anyway) and they weren't much money.

The Motorcraft is an easy carb to work on. Easy to set float height. Floats can be set while running.

The Motorcraft was popular for circle track racing because it is mostly unaffected by angles and G-forces (turns at speed)

If anyone wants to get fancy, the Holley Sniper injection system looks pretty good. I even emailed back and forth with their tech department and they think it would be a good fit for Jeeps with the inline 6.