Trying to fix stripped caliper bolt hole - JeepForum.com
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post #1 of 5 Old 09-23-2017, 04:24 PM Thread Starter
Jwolfer
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Trying to fix stripped caliper bolt hole

I am working on fixing my front driver side caliper bolt hole that was stripped. I bought all of the pieces of the black magic knuckle saver kit locally because I need to knock it out this weekend. I drilled out the bad hole with a 27/64 drill bit and then tapped it to 1/2"-13 but the M8x1.25 threaded inserts are too small for the hole I tapped. Any advice or am I going to have to replace this whole damn knuckle since I've already drilled it?

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post #2 of 5 Old 09-23-2017, 04:28 PM
Jerry Bransford
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@mrblaine will likely be able to help you figure out what happened or what you need to do.

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post #3 of 5 Old 09-23-2017, 04:35 PM Thread Starter
Jwolfer
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Originally Posted by Jerry Bransford View Post
@mrblaine will likely be able to help you figure out what happened or what you need to do.
Let's hope so. The knuckle is going to be a PITA to swap out.
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post #4 of 5 Old 09-23-2017, 04:37 PM
mrblaine
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Quote:
Originally Posted by Jwolfer View Post
I am working on fixing my front driver side caliper bolt hole that was stripped. I bought all of the pieces of the black magic knuckle saver kit locally because I need to knock it out this weekend. I drilled out the bad hole with a 27/64 drill bit and then tapped it to 1/2"-13 but the M8x1.25 threaded inserts are too small for the hole I tapped. Any advice or am I going to have to replace this whole damn knuckle since I've already drilled it?
You likely bought a helical insert or a wrapped wire insert. The insert we sell is EZ Lok and the 8mm with the 1/2-13 external threads falls into their heavy wall category. They are solid inserts that are machined with internal and external threads.
Here is the part number so you can try to locate them online.

They are designed for through holes and the helical wire versions are best in blind holes.

https://www.ezlok.com/cds_catalog_product.php?id=650_8
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post #5 of 5 Old 09-23-2017, 04:47 PM Thread Starter
Jwolfer
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Quote:
Originally Posted by mrblaine View Post
You likely bought a helical insert or a wrapped wire insert. The insert we sell is EZ Lok and the 8mm with the 1/2-13 external threads falls into their heavy wall category. They are solid inserts that are machined with internal and external threads.
Here is the part number so you can try to locate them online.

They are designed for through holes and the helical wire versions are best in blind holes.

https://www.ezlok.com/cds_catalog_product.php?id=650_8
Ok awesome. Thanks for the great info as always!
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