Certainly the ones that came on my factory V8 cracked and re-cracked a
couple of times over 50-odd k that I had them.  I gave up welding them and
bought new mild-steel from Clive Wheatley (UK) and so far (10k+) I'm not
aware of any cracks.  They came with green composition gaskets though, which
started failing after a few k so I fitted thin steel gaskets that come in
pairs.  One problem the new manifolds have the same as the old ones is
warpage in use - they fit fine the first time but if you have to remove them
you can't get them back on without opening up the holes.
PaulH.
----- Original Message -----
From: "Scott Pontius" <spontius@worldnet.att.net>
To: "MGB-V8 list" <mgb-v8@autox.team.net>
Sent: Thursday, December 20, 2001 1:14 AM
Subject: Cracked header survey
> Hi all,
> This has been a long running debate, but what is the latest consensus on
> which of the block hugger style headers last the longest?  Stainless or
mild
> steel?  What manufacturer?
///
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