Helicoil Issue....??
04-11-2017, 01:13 PM
#1
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Year: 1999
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Helicoil Issue....??
I'm trying to repair the stripped threads for a caliper bolt with a helicoil. Drilled it out to the correct size and the helicoil tap won't bite to start to cut the threads. Any ideas???........
04-11-2017, 01:41 PM
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Year: 1989
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Just got to make sure... your tap was marked STI for "screw thread insert" correct?
You might want to let us know the drill size, tap size and helicoil size so we can help you cross reference.
You might want to let us know the drill size, tap size and helicoil size so we can help you cross reference.
04-11-2017, 01:49 PM
#3
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Year: 1999
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Marked STI
8 x 1.25
tap 570-8
Made in China
It appears that the first couple of threads in the tap have folded over, like the tap was softer than the knuckle....if that makes sense...
Last edited by Crow Horse; 04-11-2017 at 02:03 PM.
04-11-2017, 01:54 PM
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Can we see a picture of the tap?
5/16-24 is the STI tap size for a 21/64 hole. Can you get your hands on that?
5/16-24 is the STI tap size for a 21/64 hole. Can you get your hands on that?
Last edited by Jimbo Slice; 04-11-2017 at 02:01 PM.
04-11-2017, 03:14 PM
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I'm going to try and fit a bolt with a nut for the time being. Not much clearance in their. I do want to get a helicoil in there.....
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04-11-2017, 03:38 PM
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That looks like a POS tap. I've never seen that...yes they can break, (mis-used), but never seen that. You might be headed to the hardware store.