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post #1 of 4 (permalink) Old 08-08-2009, 12:44 PM Thread Starter
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So I went to coaster her and it turns out the previous owner snapped off one bolt head at the block on the left side. The I did one on the right but out from the block. Any suggestions on getting these out? Tried to drill and use an extractor but I can't get a good bite on it.

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post #2 of 4 (permalink) Old 08-08-2009, 12:49 PM
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Are you using the right size drill bit for the extractor? If yes, normally the extractor will engage the wall of the bolt and either remove it, or worse, snap off. Have you used penetrating fluid on it for 12-24 hours?

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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post #3 of 4 (permalink) Old 08-08-2009, 05:56 PM
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Whatever you do, don`t snap off the extractor! It`s tool steel and is as hard as a drill bit. I believe that CRC has a freezing penetrating oil with freon or some sort of refrigerant in it. You might try spraying some of that on the end of the bolt when the engine is hot. The thermal shock may crack the corrosion between the threads.

If you destroy the threads drilling the bolt out, you can always repair it with a helicoil.


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Approx.19,300km (12,000 miles)

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Last edited by OlHossCanada; 08-08-2009 at 10:51 PM. Reason: make clearer
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post #4 of 4 (permalink) Old 08-08-2009, 06:35 PM
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Originally Posted by OlHossCanada View Post
Whatever you do, don`t snap off the extractor! It`s tool steel and is as hard as a drill bit. If you destroy the threads, you can always repair it with a helicoil.
I'll go along with OHC on the hard extractor, if you snap it off and can't back it out it is one hard hombrey to work around...

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