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Old 06-04-2017, 04:26 PM
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jimbob200521 jimbob200521 is offline
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Join Date: May 2013
Location: Sterling, IL
Posts: 3,626
Default Command CH18->CH20->CH22 differences?

I have seen this (and I think asked this before) posted around on various forums quite a bit but I would like to get a definitive answer and then, since I have the parts, do a write up on how to do this and include any info I find along the way.

I would like to know, and eventually show, how to turn a CH18 into a CH20 and/or CH22. Due to a recent engine swap, I have an extra Command carb from a 20hp sitting on my bench. I also have an 1864 with an 18hp CH18 in it. I'm going to lay eyes on the two carbs side by side as well as the linkages/stops/etc but if anyone has anything they'd like to contribute the project, please post here. I'd like to know what people know to be true about this swap. I.E. "Ryan, you're going to have to adjust the throttle stop" or "Ryan, you're going to have to adjust the idle fuel mixture screw" or "Ryan, this won't work because the bores of the carbs are different sizes" or anything you guys can think of. I know we have a lot of really smart, talented guys here so I look forward to see what y'all have to say. I also know we have a lot of newer guys here who are just learning so if I can put together a guide showing how to do the swap, I think that could help a lot of people.
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-Ryan

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