ARP Studs: Undercut vs. Standard?

[fahrvergnugen at cox.net (David Utley)]

As I understand it, it means you don't have to retorque after X number of
miles of driving once they  are installed.  Hopefully someone more familiar
will chime in...

David
----- Original Message ----- 
From: "Rick Kellner" <rfkellner@snet.net>
To: "'Scirocco List'" <scirocco-l@scirocco.org>
Sent: Friday, November 25, 2005 11:03 AM
Subject: ARP Studs: Undercut vs. Standard?


> ARP lists two types of studs for VW heads, one set is a "Standard" set
> and the other is an "Undercut" version.  A brief description from a
> vendor's site briefly describes the difference.   Other than the brief
> description below does any want to add some information to clarify the
> benefits?  BTW, the cost difference is $15 however; still trying to
> understand the benefits and how.
> Thanks, Rick.
>
> "You will also note that ARPR offers specially undercut studs for
> several engines. This procedure (done only to the shorter studs) more
> equalizes the "stretch" of both studs, which makes for a more consistent
> clamping force-one that compensates for head gasket compression when the
> head is installed. This helps prevent blown head gaskets, and assures
> optimum sealing!"
>
> Link to the two sets
> http://www.nolimitmotorsport.com/prod/arp-204-4204
> http://www.nolimitmotorsport.com/prod/arp-204-4702
>
>
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l