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roostersansone 04-04-2012 04:30 PM

Weber 34 dgec or mc 2150/ 2100???
I have a 1990 Jeep Wrangler 4.2 I-6 with a Weber 34 DEGC and my secondaries aren't getting enough gas they bog out when I try to take off after a red light or going up a hill. Its such a pain and I look crazy trying to get up a hill. :confused::confused::confused::confused::confused:

Does anyone have this problem?
Any info will help!!

kheihn 04-04-2012 05:13 PM

MC 2100/2150 for the win! I had a Weber 32/36 and it sucked!

Kernal Clink 04-04-2012 05:29 PM


Originally Posted by BDK (Post 2219901)
MC 2100/2150 for the win! I had a Weber 32/36 and it sucked!


Isn't that kinda what it's supposed to do?

Nubby55 04-04-2012 07:21 PM

may be your jets are too small, or the acc pump is not working.

busemans 04-04-2012 09:53 PM

no, its just a crap carb. its not really made by weber, just by a company that weber let make it and use their name. its a piece of junk. i had one and would rather use the carter then that 34 again. when i had to put it back on because of repairs to my normal holley, it felt like i was driving with a one barrel carb and a 4 cylinder engine.

roostersansone 04-05-2012 11:02 AM

Does anyone have opinion on the mc carbs???

kheihn 04-05-2012 12:09 PM


Originally Posted by Kernal Clink (Post 2219950)

Isn't that kinda what it's supposed to do?

Wait a second, I see what your doing here!! :thumb:

The MC2100/2150 jetted to 1.08 are the best carbs for your money. They can even be set up for off road use.

Beachcruiser 04-05-2012 12:19 PM

Yep. Get one (1.08 venturi, stamped on side of bowl) from a late 70's 302 truck if you can, they will have the spring-dampened float that works best offroad. Mine runs 47 jets (stock).

roostersansone 04-05-2012 12:26 PM

What about this guy on eBay that say he will put the right jets in and whatever you need - adapters w/e

Is he pretty good

busemans 04-05-2012 12:35 PM

Thw guy from colorado is great. He is a member on another jeep forum i am on and he is always helpful when it comes to mc carbs

On jeepz, his name is gronk.

I have a mc2100 from a 65 mustang with the 1.14 venturis and 47 jets. It works pretty good

Beachcruiser 04-05-2012 12:39 PM

Lots of people have had good luck w/ him....others had problems. Overall, he seems to take care of his customers. can do it yourself for under 100 bucks w/ basic hand tools & decent mechanical skills. The adapter is widely available for 15 bucks, ditto w/ a 9" air cleaner. You can get those carbs off Ebay for under 50.....or your local junkyard for less, probably. Plus a rebuild kit and some good carb cleaner & you're set. The 'hardest' part is making a little strip of metal to extend the carb throttle arm so it works /w the downpull Jeep cable you already have. There are a couple of decent write ups on the process out there that a quick google should turn up.

busemans 04-05-2012 09:00 PM

yup. i did this /\

cost me nothing since i had the adapter already and you can use the weber parts for the accelerator adapter. gained 3mpg using the mc over the weber and holley

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