Broken header - cause?

[Verne Koester]

Chuck,
I ran into a problem where the copper gaskets were slightly oversize in
diameter and wouldn't seat properly. Broke the flare on a few headers before
I figured it out. If you have to force the copper gasket into the hole, it's
too big. Those gaskets were only on the market a short while and it's been a
few years now, so it's unlikely you have any. If you do, replace them.

Verne


----- Original Message -----
From: "Chuck Czarnik" <CCzarnik at arclp.com>
To: <discussion at nsrca.org>
Sent: Sunday, October 12, 2003 10:00 AM
Subject: Broken header - cause?



After re-working my exhaust system my AAP header broke on the first start
up.  The flare on the end where it screws into the engine broke off and it
started leaking there.

I have the pipe secured at the front and back, with about 5" of teflon
connected to the header.  Engine is YS 140 sport on Hyde ARI.  So, did I
kill it with a pipe mouted too stiff, or do these things break there anyway?

Trying to decide if I have more work to do so I won't tear up another one.

Thanks for any help! Chuck

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