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On Tue, 02 May 2006 14:01:02 GMT, "Mike" <mik@localnet.com> wrote:
[color=blue]
> If the ez out is not broken off you should be able to remove it by turnig
>it backwards. To keep from breaking off the ez out in the spark plug threads
>use the largest size ez out that will fit. Another option, as you suggested,
>is to drill out the remainder of the old spark plug. If you ruin the threads
>in the cylinder head you can repair them using a helicoil insert. You should
>be able to find a spark plug thread repair kit at most auto parts stores. It
>should contain everything you need to repair one spark plug hole. If you go
>with the helicoil repair you need to drill out the old spark plug hole
>anyway so that may be a better choice from the start.[/color]


The above can work but something else you might consider it this, that
the plug is likley seized and/0r cross hreaded in there anyway so
attempting to remove it without drilling is wasted effort. My suggest
is to try to drill it out but drill about 20 to 30 thousandths small
than thread bore and then when through plug you should beable to
colapse it and remove it with minimal or no material lost in head plug
hole and then you can examine what is left and choice best repair
course. If you do this successfully and theards are not damaged, you
may be able to just run a tap through it to clean it up and be back is
bussiness. When you drill it you want a nice carbide or nitrate bit
and a good 1/2 ich drive drill that can maintain a good low and steady
cutting speed (about 300 to 500 RPM) and keep bit oiled will drilling.
Do not use a smaller high speed drill motor as a good steady low speed
that does not bog is important for a good controled and fast cut.
-----------------
The SnoMan
[url]www.thesnoman.com[/url]