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OC carb ?

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plummerscarin View Drop Down
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Joined: 22 Jun 2015
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    Posted: 22 Mar 2020 at 11:25am
I am working on rebuilding the carb on my accountant's cub and have encountered a warped top half on this IH carb. I have two more for parts and they all have this same problem. Obviously they have been over tightened many times through the years. Has anyone tried to straighten these successfully?

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ac fleet View Drop Down
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Location: Arrowsmith, ILL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ac fleet Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2020 at 11:45am
They will usually break if you try to bend them ----Have gone thru that with many cubs here!
Some guys say that IF you are real careful----they can be bent a little.
As much bend as you have----not lookin real promising, but you can try a little and see what happens and figure it will break.
What I did on a couple was to mill the highest places off and use extra gaskets to get original thickness of the top. It did work but not something that I was proud of having to do.
I think you will find that most of them will be damaged. I used to have some extras here but got talked out of them, so all I have now is the ones on the 6 cubs I have left.
http://machinebuildersnetwork.com/
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steelwheelAcjim View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steelwheelAcjim Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2020 at 3:36pm
A very common problem on 80% of Cub carbs. Engine heat was a contributing factor. I have never been able to straighten one. Find a vendor selling new replacement carbs and put the old one on the shelf as an antique. Finding a good original IH carb that's not warped is getting near impossible. 
Pre-WW2 A-C tractors on steel wheels...because I'm too cheap to buy tires!
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