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Re: Aluminum heads

To: "Andrew B. Lundgren" <Lundgren@iname.com>, Dave Wood <djw69@idt.net>
Subject: Re: Aluminum heads
From: Dan Dwelley <ddwelley@excite.com>
Date: Tue, 23 May 2000 10:50:05 -0700 (PDT)
I think you are going to stir Jim Stuart from his slumber with this...
Be Cautious of using antisieze on plugs!

Dan Dwelley


On Tue, 23 May 2000 11:42:04 -0600 (MDT), Andrew B. Lundgren wrote:

>  Anti-seize is good to use because the metals will bond together, the AL
does not melt.  I put in heli-coils in my AL head to strengthen the plug
holes preventing cross threading problems.  As a side effect I have now got
stainless steel plug holes that don't have the seize problem on the plugs. 
All of the bolts that I run into the head I use anti-seize on.  
>  
>  On Tue, 23 May 2000, Dave Wood wrote:
>  
>  > I changed the plugs in my daughters Mazda last night before I took it
though
>  > the pollution test this morning where it passed I'm happy to say.  My
>  > question is about the difficulty I had in removing two of the plugs. 
I've
>  > never had a plug so reluctant to be taken out.  Two of them fought me
all
>  > the way out.  The engine had been run briefly about 3 hours previously
so it
>  > was pretty cold by the time I removed the plugs.  The most difficult
one had
>  > aluminum in the bottom two or three threads.  Does the aluminum melt
into
>  > the plugs or what?  The reason I am so concerned is that I need to
change
>  > the plugs in my wife's Olds V6 which is going to be a misery anyway as
I
>  > have to disconnect the dog bones and rotate the engine toward the front
in
>  > order to remove the plugs on the firewall side.  Since it also has
aluminum
>  > heads and I know that the plugs have never been changed, am I looking
at the
>  > same kind of difficulty to remove those?  I understand that it is a
good
>  > policy to put anti-seize compound on any bolts that go into aluminum
and I
>  > assume this is correct for plugs as well?  The only MG content is that
there
>  > are aluminum heads available as replacement heads which I assume could
cause
>  > the same kind of problem.
>  > 
>  > Thanks in advance,
>  > 
>  > Dave 72 B
>  > 
>  > 
>  


Dan Dwelley
77 Midget
Alexandria, Va.





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