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Discussion Forum

removing a broken carb jet

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Author  [Modern View]

06-07-2012 03:55:35

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upon disassembly, i found my super m's carb to have its idle jet broken off just below the surface. i tried a quality easy-out, but it broke. i tried a reverse drill bit, but the jet did not budge.

i would hate to have to replace the carb becasue of this. anyone have any other ideas?

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06-07-2012 07:15:10

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 Re: removing a broken carb jet in reply to toomanytractors, 06-07-2012 03:55:35  
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Drill it out with a #40 drill, and then use a #4-40 threading tap to rethread the hole. I suggest NOT using your electric drill, but rather use something to hold the bit and drill it by hand.

Use caution. A broken drill bit is impossible to remove, and like wise with a broken threading tap.

Another word of advice. Those easy-outs belong in the scrap iron pile. Any of them I have ever attempted to use either didn't work, or did even more damage.

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06-07-2012 08:46:03

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 Re: removing a broken carb jet in reply to rustyfarmall, 06-07-2012 07:15:10  
i was hoping someone knew the thread of the jet......thanks

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06-07-2012 10:10:09

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 Re: removing a broken carb jet in reply to toomanytractors, 06-07-2012 08:46:03  
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I've done several. You can get the #4-40 threading tap at your local N.A.P.A

I've also found them at True-Value hardware stores.

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06-07-2012 07:12:19

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 Re: removing a broken carb jet in reply to toomanytractors, 06-07-2012 03:55:35  
Heat with torch until brass just starts to change colors ,let cool ,heat again.Let cool completly. Brass expands faster than cast. It shoud shrink enough to screw out with small easy-out

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