Subject: Re: [Healeys] Sealing Head Studs

From: Mark Fawcett via Healeys <[email-masked]>
Date: Thu, 14 Oct 2021 16:06:29 -0700

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I don't recall any of the studs needing to be sealed to prevent coolant
escaping. If you have coolant seeping out, I think I would look at the head
gasket.

Mark Fawcett
59 BT7

On Thu, Oct 14, 2021 at 2:37 PM m.g.sharp--- via Healeys <
[email-masked]> wrote:

> Has anyone out there had issues with coolant coming up the head studs?  I
> have heard that some stud holes in the block are blind, but some intercep=
t
> coolant channels and that the head studs that go in these holes need to b=
e
> sealed.  Does anyone know which holes are blind and which are not?
>
>
>
> Thanks for any insights.
>
>
>
> Mirek
>
> =E2=80=9959 BT7
> _______________________________________________
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<div dir=3D"ltr">I don&#39;t recall any of the studs needing to be sealed t=
o prevent coolant escaping. If you have coolant seeping out, I think=C2=A0I=
 would look at the head gasket.=C2=A0<div><br></div><div>Mark Fawcett</div>=
<div>59 BT7</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Thu, Oct 14, 2021 at 2:37 PM m.g.sharp--- via Healeys &=
lt;<a href=3D"mailto:[email-masked]">[email-masked]</a>&gt;=
 wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lan=
g=3D"EN-CA" style=3D"overflow-wrap: break-word;"><div class=3D"gmail-m_9125=
888668225035778WordSection1"><p class=3D"MsoNormal"><span lang=3D"EN-US">Ha=
s anyone out there had issues with coolant coming up the head studs?=C2=A0 =
I have heard that some stud holes in the block are blind, but some intercep=
t coolant channels and that the head studs that go in these holes need to b=
e sealed.=C2=A0 Does anyone know which holes are blind and which are not?<u=
></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=
=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks =
for any insights.<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US">Mirek<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US">=E2=80=9959 BT7<u></u><u></u></span></p></div></div>____________=
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_______________________________________________

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From: Michael MacLean via Healeys <[email-masked]>
Date: Thu, 14 Oct 2021 16:36:42 -0700

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Just as a matter of habit, I usually put a small coat of Gask-a-cinch on
the head stud threads before screwing into the block.
Mike MacLean
1969 MGB GT
1960 Austin Healey Sprite
56 Austin Healey BN2 LeMans

On Thu, Oct 14, 2021, 4:08 PM Mark Fawcett via Healeys <
[email-masked]> wrote:

> escaping. If you have coolant seeping out, I think I would look at the he=
ad
>> Has anyone out there had issues with coolant coming up the head studs?  =
I
>> have heard that some stud holes in the block are blind, but some interce=
pt
>> coolant channels and that the head studs that go in these holes need to =
be
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

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<div dir=3D"auto">Just as a matter of habit, I usually put a small coat of =
Gask-a-cinch on the head stud threads before screwing into the block.<div d=
ir=3D"auto">Mike MacLean</div><div dir=3D"auto">1969 MGB GT</div><div dir=
=3D"auto">1960 Austin Healey Sprite</div><div dir=3D"auto">56 Austin Healey=
 BN2 LeMans</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Thu, Oct 14, 2021, 4:08 PM Mark Fawcett via Healeys &lt=
;<a href=3D"mailto:[email-masked]">[email-masked]</a>&gt; w=
rote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex=
;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">I don&#39;t =
recall any of the studs needing to be sealed to prevent coolant escaping. I=
f you have coolant seeping out, I think=C2=A0I would look at the head gaske=
t.=C2=A0<div><br></div><div>Mark Fawcett</div><div>59 BT7</div></div><br><d=
iv class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct =
14, 2021 at 2:37 PM m.g.sharp--- via Healeys &lt;<a href=3D"mailto:healeys@=
autox.team.net" target=3D"_blank" rel=3D"noreferrer">[email-masked]=
</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:=
0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">=
<div lang=3D"EN-CA"><div><p class=3D"MsoNormal"><span lang=3D"EN-US">Has an=
yone out there had issues with coolant coming up the head studs?=C2=A0 I ha=
ve heard that some stud holes in the block are blind, but some intercept co=
olant channels and that the head studs that go in these holes need to be se=
aled.=C2=A0 Does anyone know which holes are blind and which are not?<u></u=
><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=
=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks for=
 any insights.<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D=
"EN-US"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=3D=
"EN-US">Mirek<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"=
EN-US">=E2=80=9959 BT7<u></u><u></u></span></p></div></div>________________=
_______________________________<br>
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From: richard mayor via Healeys <[email-masked]>
Date: Thu, 14 Oct 2021 18:20:30 -0700

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There are no head studs that go into coolant passages.

t
e
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

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<div dir=3D"ltr">There are no head studs that go into coolant passages.<br>=
</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">=
On Thu, Oct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys &lt;<a href=3D"mai=
lto:[email-masked]">[email-masked]</a>&gt; wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex"><div style=3D"overflow-wr=
ap: break-word;" lang=3D"EN-CA"><div class=3D"gmail-m_4370904225490186360Wo=
rdSection1"><p class=3D"MsoNormal"><span lang=3D"EN-US">Has anyone out ther=
e had issues with coolant coming up the head studs?=C2=A0 I have heard that=
 some stud holes in the block are blind, but some intercept coolant channel=
s and that the head studs that go in these holes need to be sealed.=C2=A0 D=
oes anyone know which holes are blind and which are not?<u></u><u></u></spa=
n></p><p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></spa=
n></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks for any insights.<=
u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=
=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Mirek<u=
></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US">=E2=80=
=9959 BT7<u></u><u></u></span></p></div></div>_____________________________=
__________________<br>
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From: Harold Manifold via Healeys <[email-masked]>
Date: Thu, 14 Oct 2021 19:14:38 -0700

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<html xmlns:o=3D"urn:schemas-microsoft-com:office:office" xmlns:w=3D"urn:sc=
hemas-microsoft-com:office:word" xmlns:m=3D"http://schemas.microsoft.com/of=
fice/2004/12/omml" xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta ht=
tp-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta name=
=3DGenerator content=3D"Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
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div.WordSection1
	{page:WordSection1;}
--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72" style=3D=
'word-wrap:break-word'><div class=3DWordSection1><p class=3DMsoNormal>ARP U=
ltra-Torque Fastener Assembly Lubricant is a good option.</p><p class=3DMso=
Normal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Harold<o:p></o:p></p><p cl=
ass=3DMsoNormal><o:p>&nbsp;</o:p></p><div style=3D'mso-element:para-border-=
div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><=
p class=3DMsoNormal style=3D'border:none;padding:0in'><b>From: </b><a href=
=3D"mailto:[email-masked]">richard mayor via Healeys</a><br><b>Sent=
: </b>Thursday, October 14, 2021 6:21 PM<br><b>To: </b><a href=3D"mailto:m.=
[email-masked]">[email-masked]</a><br><b>Cc: </b><a href=3D"m=
ailto:[email-masked]">Healeys</a><br><b>Subject: </b>Re: [Healeys] =
Sealing Head Studs</p></div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div>=
<p class=3DMsoNormal>There are no head studs that go into coolant passages.=
</p></div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMs=
oNormal>On Thu, Oct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys &lt;<a hre=
f=3D"mailto:[email-masked]">[email-masked]</a>&gt; wrote:</=
p></div><blockquote style=3D'border:none;border-left:solid #CCCCCC 1.0pt;pa=
dding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p cl=
ass=3DMsoNormal style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto=
'>Has anyone out there had issues with coolant coming up the head studs?&nb=
sp; I have heard that some stud holes in the block are blind, but some inte=
rcept coolant channels and that the head studs that go in these holes need =
to be sealed.&nbsp; Does anyone know which holes are blind and which are no=
t?<span lang=3DEN-CA><o:p></o:p></span></p><p class=3DMsoNormal style=3D'ms=
o-margin-top-alt:auto;mso-margin-bottom-alt:auto'>&nbsp;<span lang=3DEN-CA>=
<o:p></o:p></span></p><p class=3DMsoNormal style=3D'mso-margin-top-alt:auto=
;mso-margin-bottom-alt:auto'>Thanks for any insights.<span lang=3DEN-CA><o:=
p></o:p></span></p><p class=3DMsoNormal style=3D'mso-margin-top-alt:auto;ms=
o-margin-bottom-alt:auto'>&nbsp;<span lang=3DEN-CA><o:p></o:p></span></p><p=
 class=3DMsoNormal style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:a=
uto'>Mirek<span lang=3DEN-CA><o:p></o:p></span></p><p class=3DMsoNormal sty=
le=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>=E2=80=9959 BT7<s=
pan lang=3DEN-CA><o:p></o:p></span></p></div></div></blockquote></div><p cl=
ass=3DMsoNormal style=3D'mso-margin-top-alt:0in;margin-right:0in;margin-bot=
tom:12.0pt;margin-left:4.8pt'>_____________________________________________=
__<br>Support Team.Net <a href=3D"http://www.team.net/donate.html">http://w=
ww.team.net/donate.html</a><br>Suggested annual donation&nbsp; $12.75<br><b=
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From: "m.g.sharp--- via Healeys" <[email-masked]>
Date: Sat, 16 Oct 2021 10:59:46 -0400

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Thanks for all the feedback, and not that I doubted anyone, I did my own =
test.  I pulled out my spare block (lugging a spare block around for 30 =
years is the guarantee that I will never need one) and cleaned out the =
stud holes, except for the one hole with a broken stud! I filled each of =
them with WD-40 and let it sit for 24 hrs.  The level of the WD-40 did =
not got down in any of them.  Also, Mike Salter pointed out to me that =
the head stud threads have a groove machined through them, the only =
purpose of which would be to relieve hydraulic lock from any lubricant =
that was applied to the threads before threading them in.  There would =
be no need for the groove if the holes were not blind.

=20

Given that, I cannot see the need to apply anything to the threads when =
installing the studs, except perhaps for a little lubricant to assist =
with getting them tight.

=20

Cheers, Mirek

=20

From: richard mayor <[email-masked]>=20
Sent: October 14, 2021 9:21 PM
To: [email-masked]
Cc: Healeys <[email-masked]>
Subject: Re: [Healeys] Sealing Head Studs

=20

=20

On Thu, Oct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys =

Has anyone out there had issues with coolant coming up the head studs?  =
I have heard that some stud holes in the block are blind, but some =
intercept coolant channels and that the head studs that go in these =
holes need to be sealed.  Does anyone know which holes are blind and =
which are not?

=20

Thanks for any insights.

=20

Mirek

=E2=80=9959 BT7

Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-CA link=3Dblue =
vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Thanks for all the feedback, and =
not that I doubted anyone, I did my own test. =C2=A0I pulled out my =
spare block (lugging a spare block around for 30 years is the guarantee =
that I will never need one) and cleaned out the stud holes, except for =
the one hole with a broken stud! I filled each of them with WD-40 and =
let it sit for 24 hrs.=C2=A0 The level of the WD-40 did not got down in =
any of them.=C2=A0 Also, Mike Salter pointed out to me that the head =
stud threads have a groove machined through them, the only purpose of =
which would be to relieve hydraulic lock from any lubricant that was =
applied to the threads before threading them in.=C2=A0 There would be no =
need for the groove if the holes were not blind.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'mso-fareast-language:EN-US'>Given that, =
I cannot see the need to apply anything to the threads when installing =
the studs, except perhaps for a little lubricant to assist with getting =
them tight.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span style=3D'mso-fareast-language:EN-US'>Cheers, =
Mirek<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US>From:</span></b><span lang=3DEN-US> richard mayor =
&lt;[email-masked]&gt; <br><b>Sent:</b> October 14, 2021 9:21 =
PM<br><b>To:</b> [email-masked]<br><b>Cc:</b> Healeys =
&lt;[email-masked]&gt;<br><b>Subject:</b> Re: [Healeys] Sealing =
Head Studs<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>There =
are no head studs that go into coolant passages.<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Thu, Oct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys &lt;<a =
href=3D"mailto:[email-masked]">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Has anyone out there had issues with coolant coming up the =
head studs?&nbsp; I have heard that some stud holes in the block are =
blind, but some intercept coolant channels and that the head studs that =
go in these holes need to be sealed.&nbsp; Does anyone know which holes =
are blind and which are not?</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Thanks for any insights.</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>&nbsp;</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Mirek</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>=E2=80=9959 BT7</span><o:p></o:p></p></div></div><p =
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br>Support Team.Net <a href=3D"http://www.team.net/donate.html" =
target=3D"_blank">http://www.team.net/donate.html</a><br>Suggested =
annual donation&nbsp; $12.75<br><br>Archive: <a =
href=3D"http://www.team.net/pipermail/healeys" =
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------=_NextPart_000_000F_01D7C27C.EFCC35F0--

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[email-masked]

--===============0801282931464986612==--

---

From: john harper via Healeys <[email-masked]>
Date: Sat, 16 Oct 2021 16:47:09 +0100

--===============0223258885441546174==

--0000000000003409f905ce7a3a5f
Content-Transfer-Encoding: quoted-printable

Mirek

The only places that I am aware of are that the stud holes where the
dynamo bracket fixes to the block are often not blind. I have seen
situations where the studs have been replaced by bolts leading to a leak.
The studs should be fitted with a good sealant to avoid any leaks.

There were also threads going right through on early heads where the two
rocker cover studs fit.

Best regards

On Sat, 16 Oct 2021 at 16:00, m.g.sharp--- via Healeys <
[email-masked]> wrote:

> Thanks for all the feedback, and not that I doubted anyone, I did my own
> test.  I pulled out my spare block (lugging a spare block around for 30
> years is the guarantee that I will never need one) and cleaned out the st=
ud
> holes, except for the one hole with a broken stud! I filled each of them
> with WD-40 and let it sit for 24 hrs.  The level of the WD-40 did not got
> down in any of them.  Also, Mike Salter pointed out to me that the head
> stud threads have a groove machined through them, the only purpose of whi=
ch
> would be to relieve hydraulic lock from any lubricant that was applied to
> the threads before threading them in.  There would be no need for the
> groove if the holes were not blind.
>
>
>
> Given that, I cannot see the need to apply anything to the threads when
> installing the studs, except perhaps for a little lubricant to assist wit=
h
> getting them tight.
>
>
>
> Cheers, Mirek
>
>
>
> *From:* richard mayor <[email-masked]>
> *Sent:* October 14, 2021 9:21 PM
> *To:* [email-masked]
> *Cc:* Healeys <[email-masked]>
> *Subject:* Re: [Healeys] Sealing Head Studs
>
>
>
t
e
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

--0000000000003409f905ce7a3a5f
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Mirek<div><br></div><div>The only places that I am aware o=
f are that the stud holes where the dynamo=C2=A0bracket=C2=A0fixes to the b=
lock are often not blind. I have seen situations where the studs have been =
replaced by bolts leading to a leak. The studs should be fitted with a good=
 sealant to avoid any leaks.</div><div><br></div><div>There were also threa=
ds going right through on early heads where the two rocker cover studs fit.=
</div><div><br></div><div>Best regards</div></div><br><div class=3D"gmail_q=
uote"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, 16 Oct 2021 at 16:00, m=
.g.sharp--- via Healeys &lt;<a href=3D"mailto:[email-masked]">heale=
[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);p=
adding-left:1ex"><div lang=3D"EN-CA" style=3D"overflow-wrap: break-word;"><=
div class=3D"gmail-m_4893450524239946428WordSection1"><p class=3D"MsoNormal=
"><span>Thanks for all the feedback, and not that I doubted anyone, I did m=
y own test.=C2=A0 I pulled out my spare block (lugging a spare block around=
 for 30 years is the guarantee that I will never need one) and cleaned out =
the stud holes, except for the one hole with a broken stud! I filled each o=
f them with WD-40 and let it sit for 24 hrs.=C2=A0 The level of the WD-40 d=
id not got down in any of them.=C2=A0 Also, Mike Salter pointed out to me t=
hat the head stud threads have a groove machined through them, the only pur=
pose of which would be to relieve hydraulic lock from any lubricant that wa=
s applied to the threads before threading them in.=C2=A0 There would be no =
need for the groove if the holes were not blind.<u></u><u></u></span></p><p=
 class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNo=
rmal"><span>Given that, I cannot see the need to apply anything to the thre=
ads when installing the studs, except perhaps for a little lubricant to ass=
ist with getting them tight.<u></u><u></u></span></p><p class=3D"MsoNormal"=
><span><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span>Cheers, =
Mirek<u></u><u></u></span></p><p class=3D"MsoNormal"><span><u></u>=C2=A0<u>=
</u></span></p><div style=3D"border-right:none;border-bottom:none;border-le=
ft:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm"><p class=
=3D"MsoNormal"><b><span lang=3D"EN-US">From:</span></b><span lang=3D"EN-US"=
> richard mayor &lt;<a href=3D"mailto:[email-masked]" target=3D"_bla=
nk">[email-masked]</a>&gt; <br><b>Sent:</b> October 14, 2021 9:21 PM=
<br><b>To:</b> <a href=3D"mailto:[email-masked]" target=3D"_blank">=
[email-masked]</a><br><b>Cc:</b> Healeys &lt;<a href=3D"mailto:heal=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt;<br><b>=
Subject:</b> Re: [Healeys] Sealing Head Studs<u></u><u></u></span></p></div=
><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNormal"=
>There are no head studs that go into coolant passages.<u></u><u></u></p></=
div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><div><p class=3D"Ms=
oNormal">On Thu, Oct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys &lt;<a hr=
ef=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
et</a>&gt; wrote:<u></u><u></u></p></div><blockquote style=3D"border-top:no=
ne;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,2=
04);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm"><div><div><=
p class=3D"MsoNormal"><span lang=3D"EN-US">Has anyone out there had issues =
with coolant coming up the head studs?=C2=A0 I have heard that some stud ho=
les in the block are blind, but some intercept coolant channels and that th=
e head studs that go in these holes need to be sealed.=C2=A0 Does anyone kn=
ow which holes are blind and which are not?</span><u></u><u></u></p><p clas=
s=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span><u></u><u></u></p><p clas=
s=3D"MsoNormal"><span lang=3D"EN-US">Thanks for any insights.</span><u></u>=
<u></u></p><p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0</span><u></u>=
<u></u></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Mirek</span><u></u><=
u></u></p><p class=3D"MsoNormal"><span lang=3D"EN-US">=E2=80=9959 BT7</span=
><u></u><u></u></p></div></div><p class=3D"MsoNormal" style=3D"margin-botto=
m:12pt">_______________________________________________<br>Support Team.Net=
 <a href=3D"http://www.team.net/donate.html" target=3D"_blank">http://www.t=
eam.net/donate.html</a><br>Suggested annual donation=C2=A0 $12.75<br><br>Ar=
chive: <a href=3D"http://www.team.net/pipermail/healeys" target=3D"_blank">=
http://www.team.net/pipermail/healeys</a> <a href=3D"http://autox.team.net/=
archive" target=3D"_blank">http://autox.team.net/archive</a><br><br><a href=
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/healeys/[email-masked]</a><u></u><u></u></p></blockquote></div></di=
v></div>_______________________________________________<br>
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"noreferre=
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ttp://autox.team.net/archive" rel=3D"noreferrer" target=3D"_blank">http://a=
utox.team.net/archive</a><br>
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eam.net</a><br>
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s/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.te=
am.net/mailman/options/healeys/[email-masked]</a><br>
<br>
</blockquote></div>

--0000000000003409f905ce7a3a5f--

--===============0223258885441546174==
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[email-masked]

--===============0223258885441546174==--

---

From: Michael Salter via Healeys <[email-masked]>
Date: Sat, 16 Oct 2021 12:17:54 -0400

--===============8405811031665770060==

--000000000000206e4f05ce7aa8e9
Content-Transfer-Encoding: quoted-printable

Hi John, just to avoid confusion here I should perhaps point out that we
are dealing with a 6 cylinder engine here and the generator mounting
bracket, which is also the front side cover, is secured by screws that
don't pass into the water jacket.
As far as I'm aware the issue with the generator mount bracket applies only
to the 100 engine and, as you say, can cause such problems. I should also
point out that all 8 rocker shaft mounting studs (not the valve cover nut
studs) on the 100 head pass through into the water jacket and care must be
taken to ensure that they are carefully sealed.

M

On Sat, Oct 16, 2021 at 11:57 AM john harper via Healeys <
[email-masked]> wrote:

>> years is the guarantee that I will never need one) and cleaned out the s=
tud
>> with WD-40 and let it sit for 24 hrs.  The level of the WD-40 did not go=
t
>> stud threads have a groove machined through them, the only purpose of wh=
ich
>> would be to relieve hydraulic lock from any lubricant that was applied t=
o
>> installing the studs, except perhaps for a little lubricant to assist wi=
th
I
pt
be
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>

--000000000000206e4f05ce7aa8e9
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:arial,sa=
ns-serif;font-size:small">Hi John, just to avoid confusion here I should pe=
rhaps point out that we are dealing with a 6 cylinder engine here and the g=
enerator mounting bracket, which is also the front side cover, is secured b=
y screws that don&#39;t pass into the water jacket.<br></div><div class=3D"=
gmail_default" style=3D"font-family:arial,sans-serif;font-size:small">As fa=
r as I&#39;m aware the issue with the generator mount bracket applies only =
to the 100 engine and, as you say, can cause such problems. I should also p=
oint out that all 8 rocker shaft mounting studs (not the valve cover nut st=
uds) on the 100 head pass through into the water jacket and care must be ta=
ken to ensure that they are carefully sealed.</div><div class=3D"gmail_defa=
ult" style=3D"font-family:arial,sans-serif;font-size:small"><br></div><div =
class=3D"gmail_default" style=3D"font-family:arial,sans-serif;font-size:sma=
ll">M<br></div><div class=3D"gmail_default" style=3D"font-family:arial,sans=
-serif;font-size:small"><br></div></div><br><div class=3D"gmail_quote"><div=
 dir=3D"ltr" class=3D"gmail_attr">On Sat, Oct 16, 2021 at 11:57 AM john har=
per via Healeys &lt;<a href=3D"mailto:[email-masked]" target=3D"_bl=
ank">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,=
204,204);padding-left:1ex"><div dir=3D"ltr">Mirek<div><br></div><div>The on=
ly places that I am aware of are that the stud holes where the dynamo=C2=A0=
bracket=C2=A0fixes to the block are often not blind. I have seen situations=
 where the studs have been replaced by bolts leading to a leak. The studs s=
hould be fitted with a good sealant to avoid any leaks.</div><div><br></div=
><div>There were also threads going right through on early heads where the =
two rocker cover studs fit.</div><div><br></div><div>Best regards</div></di=
v><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On S=
at, 16 Oct 2021 at 16:00, m.g.sharp--- via Healeys &lt;<a href=3D"mailto:he=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0=
.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang=3D"=
EN-CA"><div><p class=3D"MsoNormal"><span>Thanks for all the feedback, and n=
ot that I doubted anyone, I did my own test.=C2=A0 I pulled out my spare bl=
ock (lugging a spare block around for 30 years is the guarantee that I will=
 never need one) and cleaned out the stud holes, except for the one hole wi=
th a broken stud! I filled each of them with WD-40 and let it sit for 24 hr=
s.=C2=A0 The level of the WD-40 did not got down in any of them.=C2=A0 Also=
, Mike Salter pointed out to me that the head stud threads have a groove ma=
chined through them, the only purpose of which would be to relieve hydrauli=
c lock from any lubricant that was applied to the threads before threading =
them in.=C2=A0 There would be no need for the groove if the holes were not =
blind.<u></u><u></u></span></p><p class=3D"MsoNormal"><span><u></u>=C2=A0<u=
></u></span></p><p class=3D"MsoNormal"><span>Given that, I cannot see the n=
eed to apply anything to the threads when installing the studs, except perh=
aps for a little lubricant to assist with getting them tight.<u></u><u></u>=
</span></p><p class=3D"MsoNormal"><span><u></u>=C2=A0<u></u></span></p><p c=
lass=3D"MsoNormal"><span>Cheers, Mirek<u></u><u></u></span></p><p class=3D"=
MsoNormal"><span><u></u>=C2=A0<u></u></span></p><div style=3D"border-color:=
rgb(225,225,225) currentcolor currentcolor;border-style:solid none none;bor=
der-width:1pt medium medium;padding:3pt 0cm 0cm"><p class=3D"MsoNormal"><b>=
<span lang=3D"EN-US">From:</span></b><span lang=3D"EN-US"> richard mayor &l=
t;<a href=3D"mailto:[email-masked]" target=3D"_blank">boyracer466@gm=
ail.com</a>&gt; <br><b>Sent:</b> October 14, 2021 9:21 PM<br><b>To:</b> <a =
href=3D"mailto:[email-masked]" target=3D"_blank">m.g.sharp@sympatic=
o.ca</a><br><b>Cc:</b> Healeys &lt;<a href=3D"mailto:[email-masked]=
" target=3D"_blank">[email-masked]</a>&gt;<br><b>Subject:</b> Re: [=
Healeys] Sealing Head Studs<u></u><u></u></span></p></div><p class=3D"MsoNo=
rmal"><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNormal">There are no head=
 studs that go into coolant passages.<u></u><u></u></p></div><p class=3D"Ms=
oNormal"><u></u>=C2=A0<u></u></p><div><div><p class=3D"MsoNormal">On Thu, O=
ct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys &lt;<a href=3D"mailto:heale=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; wrote:<=
u></u><u></u></p></div><blockquote style=3D"border-color:currentcolor curre=
ntcolor currentcolor rgb(204,204,204);border-style:none none none solid;bor=
der-width:medium medium medium 1pt;padding:0cm 0cm 0cm 6pt;margin-left:4.8p=
t;margin-right:0cm"><div><div><p class=3D"MsoNormal"><span lang=3D"EN-US">H=
as anyone out there had issues with coolant coming up the head studs?=C2=A0=
 I have heard that some stud holes in the block are blind, but some interce=
pt coolant channels and that the head studs that go in these holes need to =
be sealed.=C2=A0 Does anyone know which holes are blind and which are not?<=
/span><u></u><u></u></p><p class=3D"MsoNormal"><span lang=3D"EN-US">=C2=A0<=
/span><u></u><u></u></p><p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks =
for any insights.</span><u></u><u></u></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US">=C2=A0</span><u></u><u></u></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US">Mirek</span><u></u><u></u></p><p class=3D"MsoNormal"><span lang=
=3D"EN-US">=E2=80=9959 BT7</span><u></u><u></u></p></div></div><p class=3D"=
MsoNormal" style=3D"margin-bottom:12pt">___________________________________=
____________<br>Support Team.Net <a href=3D"http://www.team.net/donate.html=
" target=3D"_blank">http://www.team.net/donate.html</a><br>Suggested annual=
 donation=C2=A0 $12.75<br><br>Archive: <a href=3D"http://www.team.net/piper=
mail/healeys" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <=
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