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Broken tap

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smallvan
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2011/02/23 16:10:29 (permalink)
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Broken tap

My son was cleaning the exhaust threads out, and on the last hole we broke the tap. Any ideas,how to get it out.As i dont want to take the head off again
regards
james
#1


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    ash
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    RE: Broken tap 2011/02/23 16:40:58 (permalink)
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    If its fairly close to the surface, I've just used a small punch and hammer to "unwind" it out in the past.

    Ash
    #2
    robertverhey
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    RE: Broken tap 2011/02/23 23:08:29 (permalink)
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    Is there enough protruding to attach a crosspiece with a welder?
    #3

    smallvan
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    RE: Broken tap 2011/02/24 08:16:55 (permalink)
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    No nothing sticking out, and cannot get a punch on to it.
    #4
    teeg
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    RE: Broken tap 2011/02/24 09:09:59 (permalink)
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    Not sure what they may be called over your way, but we have the thread doctor who will come out and remove it for a fee. He will retap thread as well.
    #5
    fastphil
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    RE: Broken tap 2011/02/26 21:10:44 (permalink)
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    quote:
    Originally posted by smallvan

    My son was cleaning the exhaust threads out, and on the last hole we broke the tap. Any ideas,how to get it out.As i dont want to take the head off again
    regards
    james
    I have had a great deal of success with using an arc welder to build up a knob on the end of the tap until it sticks out far enough to grab it with a pair of vice-grips.just be careful not to weld it to the head!!! Hope this helps!!! Phil
    #6

    smallvan
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    RE: Broken tap 2011/02/27 09:16:39 (permalink)
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    I have admitted defeat and
    sent the head off to the engine builders
    #7
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