Header HELP! new longer exh. man studs?

[rapieper at yahoo.com (Ron Pieper)]

This may be a twist on this topic (haven't read it all), but WTH.  

I've heard something that seems a bit odd...that switching to longer exhaust manifold studs and
putting bushings (read: stacks of washers) under the nut to fill up the space is supposed to
eliminate cracking of the manifold flange.  This is supposed to be a trick used on Saab turbo and
heavy-duty diesel engines.  I'm supposing that the longer stud expands more, providing more
'give', and thus preventing cracking.

Makes me think that a longer stud and a stack of belleville washers may do this just fine, and
cheap too.  Hmmmm....anybody (Larry) have an opinon on this?

Ron

--- VWGTIKIM@aol.com wrote:
> In regard to the question on the headers, what they did was use a collar  the 
> same thickness of the manifold plate that mounts to the head, and weld the 
> collars around each of the 4 pipes. In my previous experiences with headers 
> cracking this is where it has been. Michael


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