[Healeys] Sealing Head Studs

john harper ah100tech at gmail.com
Sat Oct 16 09:47:09 MDT 2021


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situations where the studs have been replaced by bolts leading to a leak.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 <
healeys at autox.team.net> 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 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.
>
>
>
> 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.
>
>
>
> Cheers, Mirek
>
>
>
> *From:* richard mayor <boyracer466 at gmail.com>
> *Sent:* October 14, 2021 9:21 PM
> *To:* m.g.sharp at sympatico.ca
> *Cc:* Healeys <healeys at autox.team.net>
> *Subject:* Re: [Healeys] Sealing Head Studs
>
>
>
> There are no head studs that go into coolant passages.
>
>
>
> On Thu, Oct 14, 2021 at 2:36 PM m.g.sharp--- via Healeys <
> healeys at autox.team.net> 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 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?
>
>
>
> Thanks for any insights.
>
>
>
> Mirek
>
> ’59 BT7
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/boyracer466@gmail.com
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/ah100tech@gmail.com
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20211016/7b403d2e/attachment.htm>


More information about the Healeys mailing list