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Unread 07-25-2005, 04:09 PM   #1
bcar240
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Join Date: Jan 2005
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MC2100, umm, is this right?
I just got my refurb MC2100, and I was about ready to install it when I noticed the stamp on the carb. I ordered mine by choosing an "AMC 304" engine. According to the research I did beforehand, I remember that they stamped the venturi size on the side of the carb, and that site recommended the 1.08. Mine says 1.21, which IIRC flows a hell of a lot more air. Just wondering if this will work on my 258 or should I call the parts co on their mixup. Thanks in advance!

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Unread 07-25-2005, 04:53 PM   #2
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I'm currently running a 1.21 size. Can't get it to idle right. I have checked all of the obvious. Have a good 1.08 sitting here as I type waiting be to be installed. I think this will run much better. My 1bbl Carter ran better than the 1.21. Just my experience.
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1977 CJ5, '75 258, Motorcraft 2150 carb, HEI dizzy, BDS 2.5" suspension, 3/4" Daystar Rock Krusher Greasable shackles, M.O.R.E. steering brace, Flaming River steering shaft, Tie rod flip, Yukon AMC20 axle kit, 1.5" Trail Sport wheel spacers, 15x10" Black Cragar soft 8s w/ 33" Yokohama Geolander MTs, Goodridge SS brake lines, Classic Tube stainless hard lines, YJ power brake with front disc upgrade (had 4 wheel drums)
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Unread 07-25-2005, 04:56 PM   #3
bcar240
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hmm, not good signs. I will try to find that page I got the info from.

edit: from the site: #108 is 450 cfm, #114 520 cfm, and #121 575
http://www.cjoffroad.com/writeup.asp?WU_ID=16&noAdd=1
Last edited by bcar240; 07-25-2005 at 04:58 PM.. Reason: more info
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