[AT] Stripped threads in alum head

[John Dunlap]

Steve, we all thank you . . . .

On Mon, Nov 30, 2009 at 4:58 PM, charles bridges
<bridgescharles at hughes.net> wrote:
>  I am working on an overhead cam engine and one of the bolts that holds the
> cam shaft cap on is stripped.  It is an alum head, and I am trying to fix it
> without pulling the head.  We are looking at 150 bucks worth of gaskets and
> a lot of work to pull the heads.
>
> The are two steel sleeves imbedded in the top of the head where the cam
> shaft cap bolts go.  Looks like they are about a 1/4" down in the head and
> protude about a 1/4" above, which lets them go about that far up in the
> camshaft cap.  The drill bit or tap for the helicoil will not go through the
> steel sleeve.  How do you get them out to drill and tap the hole out.
>
> The camshaft caps take 8mm bolts and of course a 8mm tap will go through the
> sleeve.  I need to drill the hole bigger in order to tap it for a helicoil.
>
>
>
> Any suggestions will be appreciated.
>
> Charles
>
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