[DeTomaso] starter studs

[Ken Green]

Dave,
 
   I think the concern is that as you tighten a steel bolt in aluminum, the steel bolt can cause abrasion of the softer aluminum it rubs against.  For example, there are kits to repair the threads of spark plug holes in aluminum heads because the threads can get stripped if you are not careful.
 
   You also might cross-thread a bolt and not know it because of the resistance inherent in inserting the bolt through a part (e.g., the starter flange), and it's cutting cross-threads into a soft metal.  When you screw in a stud, it's probably a lot easier to keep it straight and avoid cross-threading.
 
Ken

--- On Tue, 4/5/11, Dave McManus <dave at damardirect.com> wrote:


From: Dave McManus <dave at damardirect.com>
Subject: Re: [DeTomaso] starter studs
To: "'Jeff Udelson'" <jefude at yahoo.com>, detomaso at realbig.com
Date: Tuesday, April 5, 2011, 11:11 AM


Well, a bolt w/o a head is a stud.

With a bolt you are twisting & turning a bolt head applies torque on the
aluminum threads. " Any high-torque application with
aluminum requires the use of studs rather than bolts."

I'm not an engineer. Maybe someone can explain the torque and twisting when
tightening a bolt in aluminum threads.  

-----Original Message-----
From: Jeff Udelson [mailto:jefude at yahoo.com] 
Sent: Monday, April 04, 2011 10:18 AM
To: detomaso at realbig.com
Subject: [DeTomaso] starter studs

OK.
 If the opinion is not to use bolts. And I can not find correct studs. How
about just using a bolt with the head cut off ?




      

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