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Unread 10-09-2009, 04:07 PM   #1
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258 needs new carb

Can anyone shed some light on a new carb for my 258 I6 CJ7? Just discovered that the Carter carb needs to be replaced. I dont do much off-roading but I like the idea of more hp.

I seamless install would be preferred.

thanks in advance,

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Unread 10-09-2009, 04:24 PM   #2
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Originally Posted by 1skyking View Post
Can anyone shed some light on a new carb for my 258 I6 CJ7? Just discovered that the Carter carb needs to be replaced. I dont do much off-roading but I like the idea of more hp.

I seamless install would be preferred.

thanks in advance,
Weber makes a good carb, 32/34 I think if you're stockish. Search around here for that and the MC2100 conversion.

I have a Motorcraft MC2100, converted to manual choke, it's butt simple to rebuild. You can do it yourself, seriously. It's way easy if you take your time.

Find one in a junkyard and go. Need an adaptor, found through several places.

A throttle linkage adjustment, or simply buy a new throttle cable (search for that part #) and it's damn near plug n play.

You can buy a "kit" from a guy on Ebay for $300ish. Comes with everything for this carb to be installed on your CJ.

I chose to get a junkyard carb, rebuild, get an adaptor, cut my own gaskets, convert to manual choke, buy the throttle cable, and love it. Does really great.

User named Coas has a cool PDF with tons of info. Several other excellant resources here.
79' CJ7 - D30/D44, T150/D20, 3.73's, MC2100, Team Rushed, YJ top, 4" with 33" KM1, winch, skids, homemade bumpers, spray paint and a cool shift knob.
81' CJ8 bone stock (MC2100, Team Rushed)
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Unread 10-09-2009, 06:11 PM   #3
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1986 CJ7 
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I also put the mc2100 on a couple years ago.. bought an old one from some guy here on the forums, rebuilt it, got the adapter from summit, also converted to the manual choke.. works great.

1986 Jeep CJ7 (photos)
Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
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Unread 10-09-2009, 07:09 PM   #4
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I'm not sure what you mean my "seamless install"...but I've been using the MC2100 for a while and it's night and day from the BBD. I had to dig around in some junkyards to find a core, figure out which rebuild kit worked on it, match the jets to my application (which took some more digging in junkyards), fiddled with the best linkage, played with the return springs until I got 'em like I like 'em, and some other fun stuff. To me it was seamless but it took 6 months to get it perfect. It sure didn't come in a box with instructions...but I've had a ton of fun figuring it all out. You can do the kits from ebay...or a Weber...but even then, I don't know if "seamless" would define the experience. Whatever you do, jump in and learn all you can about the new carb.
81CJ7, 258, MC2100, TeamRush'd, 3"lift, 34x10.50TSL's, 3:31gears, Scrambler cab
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Unread 10-09-2009, 07:25 PM   #5
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A weber 32/36 is an excellent way to go. Order the K551 conversion kit and you can be done in an hour. It contains all the linkage and adapters. About as seamless as you can get.

I got mine from the last link. Compare pricing on all three.
Weber | Carburetors| Carbs| Online Catalog - Jeep-Toyota-Suzuki-Nissan-Mazda-BMW

CARBS UNLIMITED INC. carburetors including Weber Edlebrock Holley Quadrajet

REDLINE - Serving the U.S., Canada, Central and South America for over 30 years
Weber 32/36 DGEV,
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Unread 10-09-2009, 08:24 PM   #6
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Here is a write up for you on the Weber 34 but it also can be used for knowledge on the other webers too. Also note the tricks listed to make your cj run better, TeamRush, Nutter, Grounds,

Weber 34 Tune & Jet Thread, plus jeep tricks to do
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