MC2100 power valve size on 258? - Page 2 - JeepForum.com

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post #16 of 20 Old 11-27-2013, 07:45 AM Thread Starter
Cashcrazy
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1983 CJ7 
 
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The 2100 (1.08)is fairly new to the jeep. I finally got tired of the Carter getting clogged. I may try a 7.5 power valve and #47 jets. At least I will know what size power valve I am working with. I looked for contact info for GP Sorensen to ask what size power valve they pack in their kit, but didn't have success.


1982 CJ7(sold), 1983 CJ7(sold), 1989 YJ(sold), 1983 CJ7 undergoing frame-off.
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post #17 of 20 Old 11-27-2013, 07:49 AM Thread Starter
Cashcrazy
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I screwed one screw in all the way and it ran like crap. I only ran one in because I read that it should die with one screw all the way in, if not it is over jetted. Then I read several arguments about the main jets not effecting the idle. Idle Rpm is 600-700

1982 CJ7(sold), 1983 CJ7(sold), 1989 YJ(sold), 1983 CJ7 undergoing frame-off.
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post #18 of 20 Old 11-27-2013, 08:07 AM
Matt1981CJ7
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post #19 of 20 Old 11-27-2013, 11:42 AM
scrapman
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Quote:
Originally Posted by Cashcrazy View Post
I screwed one screw in all the way and it ran like crap. I only ran one in because I read that it should die with one screw all the way in, if not it is over jetted. Then I read several arguments about the main jets not effecting the idle. Idle Rpm is 600-700
If you screw both idle screws in, the engine should die. If it doesn't, you have a blown power valve, which is letting fuel in the engine at idle. Your idle screws should always be moved in or out together. Follow the link Matt gave you, and you should be able to get the carb dialed in.

On another note, your charcoal canister may be saturated with gas from the old carter carb. When I had my carter, the floats would stick, and liquid gasoline would come out of the vent tubes and go straight to the charcoal canister.

Somewhere on here there is a thread where someone put new activated charcoal (fishbowl rocks) into their canister, and then sealed it back up. I bet you could find it if you searched.

EDIT: Well it wasn't on this site, but here is the rebuild: http://jeep.smallcraft.net/canister/
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post #20 of 20 Old 11-27-2013, 05:51 PM Thread Starter
Cashcrazy
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My canister could very well be gone. The line that is T'ed in the PCV valve line in the street2mud link makes the canister constantly make a high pitch whine.

1982 CJ7(sold), 1983 CJ7(sold), 1989 YJ(sold), 1983 CJ7 undergoing frame-off.
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