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post #1 of (permalink) Old 01-03-2001, 09:23 PM Thread Starter
 
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Another motorcraft 2100

Ok, I found a carb and it is only going to cost me six beer and the guy is my neighbour so he wont sell me a pos. Here is the question, the carb is off of a 62 ford with a 352 in it, how much will it bog down. I know there have been guys who swapped mc 2100s out of big block engines and I was wondering how it turned out for them. And what would be a good way to fix the bogging, go to smaller jets and what size. I am very excited about this Its my first mod Thanks.

I need to get a girlfriend I'm getting to close to my jeep.
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post #2 of (permalink) Old 01-03-2001, 10:22 PM
 
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Re: Another motorcraft 2100

A 351 engine is 36% larger than a 258. If they both spin the same rpms, it will flow 36% more cfm's. A larger carburetor has a larger venturi size. Placed on a smaller engine it will flow less air than intended, and the result will be lower velocity of flow thru the venturi than intended by the designers. It is this lower velocity that will result in the bog and lack of response. It may meter the fuel mixture too rich, and you can correct that by re-jetting. But the main reason for the bog will be that it is simply too large of a venturi. The small version of the 2100 has a venturi that is about 1.08" in diameter at it's smallest point (ie where the hour glass shape is necked down to 1.08"). You can read this number off the drivers side of the float bowl, it's ina circle just behind the accell pump linkage.

On the other hand, give it a try. What have you got to lose? Maybe it will work great and you can tell us all about it. If it does fail to live up to your expectations, you can keep searching for a 1.08 and swap it out when you find it.

Tim

84 CJ7, 258, HEI, M/C 2100 carb, 5 inch lift, RS9000's, 33x12.5 BFG M/T's, Lockright, full cage & belts, Xenon flares, AMC 20 1pc axles, GM dual diaphragm brake booster
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post #3 of (permalink) Old 01-03-2001, 10:32 PM Thread Starter
 
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Re: Another motorcraft 2100

Thanks, that is what I was thinking, the carb is going to cost almost nothing and I have to get rid of all the emmision stuff and the computer anyway and the state that my bbd is in anything will perform better. And the bonus is that if I can get it to work good with re-jetting it I'll be able to put a more agressive cam, headers and an ignition upgrade in put the original jets in and I'm ready to go. Anybody out there that put on a mc2100 off of a big block tell me how it went.

I need to get a girlfriend I'm getting to close to my jeep.
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post #4 of (permalink) Old 01-04-2001, 06:38 PM Thread Starter
 
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Re: Another motorcraft 2100

Repost, sorry.

I need to get a girlfriend I'm getting to close to my jeep.
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post #5 of (permalink) Old 01-05-2001, 05:35 PM
CJ Bob
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Re: Another motorcraft 2100

My is the 1.08 as describe above and it works fine, but I do need to rejet it. It has 46's in it and I would like to find some 44's so if you find a source for the jets let me know, I have had no luck finding them.

<font color=red> 83 CJ7 4" Superlift, 1" Body Lift, 33" MT's, 4.56's, Superior One Piece Axles, Rear Detroit Locker, Warn X8000I, K&N, S.S Brake Lines, 258 C.I., HEI, Motorcraft 2100, 5 Speed, Dana 300, York Air, Arizona Driveline</font>

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