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Removal of broken copper nipple

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JKC

12-15-2002 05:35:04




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I am servicing a Marvel Schebler carburator from my 1950 MM ZAU. There is a 90 degree elbow nipple that connects the gas line to the carb. This COPPER nipple screws-in to the carb and I broke it off inside. Have no idea how to get it out now. Have tried traditional methods without success, as the copper is soft and just keeps changing shape. ANY suggestions at all would be appreciated. I am at a roadblock here! Thanks.

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Slowpoke

12-15-2002 20:46:21




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 Re: Removal of broken copper nipple in reply to JKC, 12-15-2002 05:35:04  
The 90* fitting is probably brass, with tapered threads. Use a few drops of penetrant on it over a period of hours or days. I assume you tried an EZ-Out the first thing. If it's a thru fitting, you might try grinding down a hacksaw blade to about 1/8" width or less for an inch or two. If the hole is too small to get the cut down blade in, drill it out a small amount, with a minimum removal of material. Then use the blade to cut slots opposite each other on the inside of the fitting. Cut as close as you can without cutting into the threads. Even if there's only room to move the saw blade a 1/4", you can still make the cuts, but it will take much longer. Try a screwdriver in the slots, or cut a piece of metal to fit, and use a Crescent wrench on it. If your EZ-Out is the square type it could now fit in the slots, and grab. If that doesn't work, make the hole slightly larger, cut several more slots and use a small chisel to drive the sections of material into the center of the hole.
Don't give up, be patient, it will eventually come out.

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jake

12-15-2002 11:00:43




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 Re: Removal of broken copper nipple in reply to JKC, 12-15-2002 05:35:04  
Try drilling smallest hole and solder a bolt with threads cut off. The solder joint will be stronger than than the origial part and a hex head w/wrench more leverage.



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