I was going to suggest the Timeserts but you beat me to it.
Check Amazon.
They had the best prices when I looked for one of these. I ended up getting
them at the local Fastenal dealer (who also had the helicoils) but I think
Amazon would have been quicker.
Randy
From: Randall
<TR3driver@ca.rr.com>
>To: 'shop-talk' <shop-talk@autox.team.net>
>Sent:
Monday, November 21, 2011 9:31 PM
>Subject: Re: [Shop-talk] installing a
helicoil
>
>> you probably have a 60/40
>> chance..
>
>IMO if you can tap a
hole, you can install a Helicoil. I'm not particularly
>good at working
free-hand, and I've never screwed one up enough to have to
>take other
measures. Ruined an insert once, but only because I didn't turn
>the tap deep
enough. (Was threading a starter bolt hole that ran through
>the mounting
flange and into the bellhousing; didn't realize how thick the
>flange was.
Bolt jammed against the insert and came out with it attached.)
>
>> ...If you
>> screw it up you not only have the cost of a Helicoil kit but
>> the cost
of a new head.
>
>There are inserts available that will work in a hole too
big for a Helicoil.
>For example:
>http://www.timesert.com/html/bigsert_sparkplug.html
>
>-- Randall
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