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Old 12-26-2013, 06:35 PM   #1
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Good carbs

Hey y'all I wanna replace the carter carb on my 87, what kind of carb would you recommend? And also some links would help a lot, would I need to replace or do anything when I replace the carburetor?

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Old 12-26-2013, 10:35 PM   #2
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My old YJ had a motorcraft carb on it. It was on there when I bought it so I dont know exactly what was involved in the swap but it ran great and had tons of power. It had some sort of hot after market ignition too. Its been a few years and I cant remember what brand it was...lol

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Old 12-27-2013, 09:22 AM   #3
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motorcraft seems to be everyones favorite..I had a holley that worked very good
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Old 12-27-2013, 10:12 AM   #4
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I installed a motorcraft 2150 carb kit off eBay http://www.ebay.com/itm/NEW-MotorCra...21162595854%26. In the research I did this is one of the best carbs for these engines and it gets rid if the computer controlled fuel/air mix system which is one if the biggest issues with the the stock. It does require nuttering but the guy who sells the kit I linked to sends piles of literature for these engines. My experience is limited to the old stock carb and the one I mentioned but I was impressed with the outcome. If you search around on the web there is plenty of info on this swap.
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Old 12-27-2013, 06:55 PM   #5
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You may need to do the Nutter by-pass when you change the Carb. style.
The Cater for the older CJ7 is a Direct Fit just with out the Stepper Motor on the back, it and the Nutter By-pass and it will run fine. [no computer]
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Old 12-27-2013, 07:18 PM   #6
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I'm hoping to put the Motorcraft 2150 when I upgrade mine.
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Old 12-29-2013, 03:59 AM   #7
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I've probably spent 80+ hours on the web researching the motorcraft carb swap for my 90 YJ (4.2) POS Carter. I'll be ordering the MC2150 (manual choke), and a TFI upgrade next week.

I've found that an MC2150, the Nutter Bypass, TFI distributor upgrade, and modding the smog system, will get you to a decent running engine that doesn't bog down when you punch it or suck down a tank of gas on the way to work. Here's the sites I found the most helpful in making that decision.

Like 'Livenlearn' said, the Ebay seller "ehrmannmp" is the best place to get the MC2150. With the new carb you're going to need to make a decision on the air cleaner and a choke. Ebay MC2150 Carb

I'm opting for the manual choke because I'm smarter than an electrical circuit or a spring when the decision for choking is needed.

I was going to use the chrome air cleaner he sells with the carb but I didn't like the hood clearance issue or the "very" small filter. I'm modding a K&N Intake Kit with a washable filter. I found a short 'S' shaped truck heater hose that makes the transition from the MC2150 to the K&N stem that doesn't require tape or goop like I've seen on the web. My local AutoZone let me play with all the parts till I found a fit. Spectre Performance also has intake kits that will work with a little modding.

The Nutter Bypass is already on this board and easy to find.

(You don't need this but others may) This site has a great explanation of the crappy smog system and tells you what to remove, and not remove. Adventures Under the Hood (Dale should get a Jeep Medal of Honor for this site!!!)

Found this guy had the best info and diagrams for the TFI Distributor & Ignition Upgrade.

Do yourself a favor and buy the Mopar manual ($25) for your jeep on Ebay. It's a PDF file and I can't tell you how many times that manual has saved the day.

My total parts cost will be around $600. My labor costs spent under the hood will be at least 3 nicked knuckles and a barrage of cuss words for the engineers who thought the stock emissions / carburetion design on that engine was sound.

Hope this helps.
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Old 12-29-2013, 01:24 PM   #8
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Are you dead set on keeping a carb on your Jeep?
there is a GREAT TBI swap, and BETTER FPI swap available, pretty much bolt on kits, that eliminate 70% of your current emissions crap, and doesnt violate any federal or state emissions laws...

TBI version:
Jeep TBI Products :: TBI KIT: JP1 Emission Legal Version CARB EO #D452 1987-91 YJ Wrangler 4.2L Emissions Legal - Howell Engine Developments, Inc.

PFI version:
MOPAR P5249610AE - MOPAR® Multi Port Kit for 81-90 Jeep® Wrangler YJ with 4.2L Manual - Quadratec

You spend more now, and less in the long run because you dont have to constantly adjust, or rebuild, also replacement sensors and injectors are common pieces available almost any parts house...

However if you are dead set on keeping a carb, ddrdan has some great advise, but remember, federal laws say you cannot modify an emissions component, so follow at your own riks.
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Old 01-01-2014, 09:17 PM   #9
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Originally Posted by livenlearn View Post
I installed a motorcraft 2150 carb kit off eBay http://www.ebay.com/itm/NEW-MotorCra...21162595854%26. In the research I did this is one of the best carbs for these engines and it gets rid if the computer controlled fuel/air mix system which is one if the biggest issues with the the stock. It does require nuttering but the guy who sells the kit I linked to sends piles of literature for these engines. My experience is limited to the old stock carb and the one I mentioned but I was impressed with the outcome. If you search around on the web there is plenty of info on this swap.
I am thinking about ordering this carburetor, from this guy, but I have read in some other forums that he is bad at communication and sometimes gives out bad carbs and that it has bad instructiond
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Old 01-01-2014, 11:41 PM   #10
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Originally Posted by Ianbeaulieu View Post
I am thinking about ordering this carburetor, from this guy, but I have read in some other forums that he is bad at communication and sometimes gives out bad carbs and that it has bad instructiond
It'd be cheaper and better to get all the stuff yourself, I did my swap for about $90. If you pm me I'll give you a ton of good links and info on the swap. I could also explain tuning info and what you'll need based on your elevation and driving styles like jets, power valves, etc.
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Old 01-02-2014, 12:56 AM   #11
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It'd be cheaper and better to get all the stuff yourself, I did my swap for about $90. If you pm me I'll give you a ton of good links and info on the swap. I could also explain tuning info and what you'll need based on your elevation and driving styles like jets, power valves, etc.
I pmd you
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Old 01-02-2014, 08:29 AM   #12
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Quote:
Originally Posted by Ianbeaulieu View Post
I am thinking about ordering this carburetor, from this guy, but I have read in some other forums that he is bad at communication and sometimes gives out bad carbs and that it has bad instructiond
Didn't know he had that reputation. I had no issues at all and was very happy even though I messed up the order and had to pm him to fix it. Maybe it would be safer to go about getting the parts another way though. I was impressed with the literature and instructions he sent but they were put together a while ago and he has changed some things since then so if someone follows instructions to the letter they might get a little lost. I'd give him a good review but I am limited to one experience.
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Old 01-19-2014, 06:30 AM   #13
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Originally Posted by 2xs View Post
Are you dead set on keeping a carb on your Jeep?
there is a GREAT TBI swap, and BETTER FPI swap available, pretty much bolt on kits, that eliminate 70% of your current emissions crap, and doesnt violate any federal or state emissions laws...

..........

However if you are dead set on keeping a carb, ddrdan has some great advise, but remember, federal laws say you cannot modify an emissions component, so follow at your own riks.
If my wallet would allow it I'd opt for the fuel injection you listed. That's the real resolution to that engines problem with carb's.

Thanks for adding the note I should have added on the Fed Emissions Regulations. If I ever get called on it, I'm going to plead small fish in a larger pond of ignored polluters.
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Old 01-19-2014, 06:57 PM   #14
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Just installed the MC2150 from ehrmannmp on eBay. He had 10 brand new 2150s and I got one of them. Install is pretty straightforward. Instructions are pretty good. The education from reading all the additional info he provides is almost worth the price by itself.

Had MSD ignition already installed with Nutter done.

Need to refine and tune it a little more, but overall pretty pleased. And, extremely glad to be rid of the Carter.
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Old 01-19-2014, 09:25 PM   #15
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I agree that the carb. on the 87 to 90 YJ is junk! I never tried the MC 2100 or 2150s other than on old Fords, Chrys. has use Carters on a lot of cars and trucks over the years and they do make a good Carb., just not the one on YJs.
Mine runs great and I get 14 to 15 mpg. with the old style carter. If I had the money I'd like to try a 2150 to see. Oh an MC made a Carb. back in the early 80s that sucked, [variable venturea or something, they all get some wrong ] Thanks for the info. guys.

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