[AT] OT: Stripped hole repair was Cast iron work on a replica cannon

[Stephen Offiler]

The Keensert mentioned by others has the benefit of lower tooling cost.  It
uses a standard tap.  For the 1/2-13 repair we are discussing, the correct
tap is 5/8-11.  Most of us probably know somebody we could borrow a tap
from, if we don't already own one.  The insert itself is cheap, a few
dollars, and there's a $15 installation tool.

SO


On Fri, May 3, 2019 at 10:51 AM ustonThomas Mehrkam <tmehrkam at sbcglobal.net>
wrote:

> I have only used for sparkplug repair on my V10. A tap block was not
> necessary in that application. The tooling aligned on the deep hole in the
> head. A special insert was used that included the spark plug seat.
> Hellicoil inserts are known to fail in this application. The tooling with
> inserts was 300 dollars. I have 200000 miles on the repair. They have
> generic sizes that should work for the Canon. Look at the timesert web
> site. Tooling should be about 75 dollars. Many sizes available on Amazon.
>
>
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>
> On Fri, May 3, 2019 at 8:43 AM, James Peck
> <jamesgpeck at hotmail.com> wrote:
> Do you use a tapping block to help the tap enter the hole straight?
>
> [David Myers] If I remember correctly, a Keen Sert also uses a regular
> size bolt tap.  No special tools required.  I agree with Steve on the
> sealing of the threads.  Very strong installation.
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