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I doubt there is anything non-metallic that will stand up to the heat that =
close to the exhaust valves. Sounds like a job for a helicoil.
Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of Bob Spidell via=
Healeys <healeys@autox.team.net>
Sent: Sunday, February 28, 2021 5:06 AM
To: healeys@autox.team.net <healeys@autox.team.net>
Subject: Re: [Healeys] Exhaust header stud fix ?
I used this stuff once to bolster the threads in a bellhousing slave
cylinder mount:
https://www.amazon.com/Loctite-442-28654-4-80ml-Thread-Stripped/dp/B000WSEU=
II/ref=3Dasc_df_B000WSEUII/?tag=3Dhyprod-20&linkCode=3Ddf0&hvadid=3D3121060=
49007&hvpos=3D&hvnetw=3Dg&hvrand=3D6889728303295400308&hvpone=3D&hvptwo=3D&=
hvqmt=3D&hvdev=3Dc&hvdvcmdl=3D&hvlocint=3D&hvlocphy=3D1014019&hvtargid=3Dpl=
a-440732566291&psc=3D1&tag=3D&ref=3D&adgrpid=3D62149806956&hvpone=3D&hvptwo=
=3D&hvadid=3D312106049007&hvpos=3D&hvnetw=3Dg&hvrand=3D6889728303295400308&=
hvqmt=3D&hvdev=3Dc&hvdvcmdl=3D&hvlocint=3D&hvlocphy=3D1014019&hvtargid=3Dpl=
a-440732566291
It held up for quite a few years, until I got a chance to put inserts
in; but, 300degF may not be enough for exhaust proximity. It's an epoxy,
like JB Weld, but it uses (your) bolt to form threads, and a 'release
agent' to keep the bolt/stud from being glued in. I can't say for sure,
but my gut feeling is an epoxy would gum up a tap.
Bob
On 2/27/2021 8:25 PM, Alan Seigrist via Healeys wrote:
> All -
>
> One of the three holes at the bottom of my exhaust header is loose and
> the stud doesn't seat properly (but it does screw in).
>
> I was thinking of putting some "thermosteel" or JB "extreme heat" in
> there then tapping it out.
>
> The threads are still there and it just needs a bit of fill to tighten
> it up.
>
> Has anyone ever done a similar repair? Will it last?
>
> Alan
>
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archiv=
e
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
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<div>I doubt there is anything non-metallic that will stand up to the heat =
that close to the exhaust valves. Sounds like a job for a helicoil.</div>
<div><br>
</div>
<div>Bill Lawrence</div>
<div>BN1 #554</div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Healeys <healeys-b=
ounces@autox.team.net> on behalf of Bob Spidell via Healeys <healeys@=
autox.team.net><br>
<b>Sent:</b> Sunday, February 28, 2021 5:06 AM<br>
<b>To:</b> healeys@autox.team.net <healeys@autox.team.net><br>
<b>Subject:</b> Re: [Healeys] Exhaust header stud fix ?</font>
<div> </div>
</div>
<div class=3D"BodyFragment"><font size=3D"2"><span style=3D"font-size:11pt;=
">
<div class=3D"PlainText">I used this stuff once to bolster the threads in a=
bellhousing slave
<br>
cylinder mount:<br>
<br>
<a>https://www.amazon.com/Loctite-442-28654-4-80ml-Thread-Stripped/dp/B000W=
SEUII/ref=3Dasc_df_B000WSEUII/?tag=3Dhyprod-20&linkCode=3Ddf0&hvadi=
d=3D312106049007&hvpos=3D&hvnetw=3Dg&hvrand=3D68897283032954003=
08&hvpone=3D&hvptwo=3D&hvqmt=3D&hvdev=3Dc&hvdvcmdl=3D&a=
mp;hvlocint=3D&hvlocphy=3D1014019&hvtargid=3Dpla-440732566291&p=
sc=3D1&tag=3D&ref=3D&adgrpid=3D62149806956&hvpone=3D&hv=
ptwo=3D&hvadid=3D312106049007&hvpos=3D&hvnetw=3Dg&hvrand=3D=
6889728303295400308&hvqmt=3D&hvdev=3Dc&hvdvcmdl=3D&hvlocint=
=3D&hvlocphy=3D1014019&hvtargid=3Dpla-440732566291</a><br>
<br>
It held up for quite a few years, until I got a chance to put inserts <br>
in; but, 300degF may not be enough for exhaust proximity. It's an epoxy, <b=
r>
like JB Weld, but it uses (your) bolt to form threads, and a 'release <br>
agent' to keep the bolt/stud from being glued in. I can't say for sure, <br=
>
but my gut feeling is an epoxy would gum up a tap.<br>
<br>
Bob<br>
<br>
On 2/27/2021 8:25 PM, Alan Seigrist via Healeys wrote:<br>
> All -<br>
><br>
> One of the three holes at the bottom of my exhaust header is loos=
e and <br>
> the stud doesn't seat properly (but it does screw in).<br>
><br>
> I was thinking of putting some "thermosteel" or JB "ext=
reme heat" in <br>
> there then tapping it out.<br>
><br>
> The threads are still there and it just needs a bit of fill to tighten=
<br>
> it up.<br>
><br>
> Has anyone ever done a similar repair? Will it last?<br>
><br>
> Alan<br>
><br>
<br>
_______________________________________________<br>
m.net/donate.html</a><br>
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Archive: <a href=3D"http://www.team.net/pipermail/healeys";>http://www.team.=
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s/ynotink@msn.com">
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