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Date:         Thu, 12 May 2005 09:08:30 -0400
Reply-To:     ROBERT DONALDS <donalds1@VERIZON.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         ROBERT DONALDS <donalds1@VERIZON.NET>
Subject:      Re: Broken stud, anyone has a good one?
Comments: To: jbange <hfinn@INGRATES.NET>
Content-type: text/plain; format=flowed; charset=iso-8859-1; reply-type=response


 Every head stud i have seen brake was due to some surface pittting that
extended into the core of the stud mostly at the base of the stud


Bob Donalds
Boston Engine
http://www.bostonengine.com


----- Original Message -----
From: "jbange" <hfinn@INGRATES.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, May 11, 2005 11:14 AM
Subject: Re: Broken stud, anyone has a good one?




> >Hi guys,
>>I just did it.  The longest kind broke.
>
> So, regarding broken head studs: why do they break? Corrosion is one way,
> from what I read, but what about the ones that break when they're still
> shiny, the ridges from the lathe still perfect? Is it a simple "weak part"
> issue, with years of heating and cooling leading inevitably to breakage
> because one of the sixteen studs just couldn't hack it? Or is it maybe the
> result of the initial official VW "over-torque fix" for leaky heads? Is it
> perhaps sometimes a result of overheating putting too much strain on them?
>
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