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If used with water instead of proper coolant electrolytic corrosion will
be most likely between the aluminium and copper which are chemically far
apart. A NOS steel/asbestos/steel head gasket will be better as there
will be far less electrolytic corrosion. Better still to use a modern
composite head gasket if available, but check the torquing procedure as
that may be very different compared to the old fashioned way. Sometimes
new studs and nuts are required.
As mentioned by Alan regular re-torquing an aluminium head on a cast
iron block is sometimes necessary as the aluminium of the head expands
quite a bit more than cast iron/steel when hot thus exposing the copper
head gasket to a varying compression all the time which will harden and
flatten the copper. A steel/asbestos or composite head gasket may be
less sensitive to this.
Make sure you use thick machined and hardened steel washers under the
head nuts to prevent damage to the head.
If the copper gasket has no visible damage you may possibly reuse it
after annealing, heating it evenly to cherry red and letting it cool down.
Kees Oudesluijs
Op 3-9-2019 om 08:36 schreef Alan Seigrist:
> The Ali head probably needs to be retorqued a little more often than a
> steel head.... 10 years is a while, probably why the gasket blew.
>
> On Tue, Sep 3, 2019 at 4:07 AM Lou G <lgalper1@cox.net
>
> Iâ??ve been using the DW head for about 10 years. No problems till
> last week when white smoke came out on startup. No white smoke
> since then, but maybe Roland will come over to pull head. !
> Using the stock copper head gasket the whole time.
> Now AH Spares advertises a newly engineered head for those looking.
> Thankfully we have some choices.
>
> Lou
> AHC San Diego
>
>
>
> Subject: Re: [Healeys] 100 alloy head
>
> I bought a Denis Welsh head. It is a simple bolt on but you are
> going to add their studs and nuts and a steel cylinder head
> gasket - at least that is what I did. Go to the web site and read
> all that applies to cylinder heads. You can buy a bare head or one
> that has been prepped for street or competition. It is cheaper to
> buy from the UK than from the US resellers. I only have 70 miles
> on my BN1 but so far so good.
>
> -Roland
> BN1 #724
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
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<p>If used with water instead of proper coolant electrolytic
corrosion will be most likely between the aluminium and copper
which are chemically far apart. A NOS steel/asbestos/steel head
gasket will be better as there will be far less electrolytic
corrosion. Better still to use a modern composite head gasket if
available, but check the torquing procedure as that may be very
different compared to the old fashioned way. Sometimes new studs
and nuts are required.</p>
<p>As mentioned by Alan regular re-torquing an aluminium head on a
cast iron block is sometimes necessary as the aluminium of the
head expands quite a bit more than cast iron/steel when hot thus
exposing the copper head gasket to a varying compression all the
time which will harden and flatten the copper. A steel/asbestos
or composite head gasket may be less sensitive to this. <br>
</p>
<p>Make sure you use thick machined and hardened steel washers under
the head nuts to prevent damage to the head.<br>
</p>
<p>If the copper gasket has no visible damage you may possibly reuse
it after annealing, heating it evenly to cherry red and letting it
cool down.</p>
<p><br>
</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 3-9-2019 om 08:36 schreef Alan
Seigrist:<br>
</div>
<blockquote type="cite"
cite="mid:CAFBXTk+k2PtzfbtrRgsh4q24-qq7eYgzzbi056jx+LN54CHeSA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">The Ali head probably needs to be retorqued a
little more often than a steel head.... 10 years is a while,
probably why the gasket blew.</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Sep 3, 2019 at 4:07 AM
Lou G <<a href="mailto:lgalper1@cox.net";
moz-do-not-send="true">lgalper1@cox.net</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Iâ??ve
been using the DW head for about 10 years. No problems till
last week when white smoke came out on startup. No white
smoke since then, but maybe Roland will come over to pull
head. !<br>
Using the stock copper head gasket the whole time. <br>
Now AH Spares advertises a newly engineered head for those
looking. <br>
Thankfully we have some choices. <br>
<br>
Lou<br>
AHC San Diego <br>
<br>
<br>
<br>
Subject: Re: [Healeys] 100 alloy head<br>
<br>
I bought a Denis Welsh head. It is a simple bolt on but you
are going to add their studs and nuts and a steel cylinder
head gasket - at least that is what I did. Go to the web site
and read all that applies to cylinder heads. You can buy a
bare head or one that has been prepped for street or
competition. It is cheaper to buy from the UK than from the US
resellers. I only have 70 miles on my BN1 but so far so good.<br>
<br>
-Roland<br>
BN1 #724<br>
_______________________________________________<br>
Support Team.Net <a href="http://www.team.net/donate.html";
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wrap="">_______________________________________________
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