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RE: red hot headers

To: "'riverside'" <riverside@Cedar-Rapids.net>,"'fot'" <fot@autox.team.net>
Subject: RE: red hot headers
From: "Don Marshall" <marshall@nefcom.net>
Date: Mon, 11 Apr 2005 11:43:19 -0400
Delivered-to: mharc@demo.fatchancegarage.com
In-reply-to: <004f01c53eba$7db9e0a0$3971fcd0@RILEY>
Reply-to: "Don Marshall" <marshall@nefcom.net>
Sender: owner-fot@autox.team.net
Please respond to the whole list on this one.  I had the same thing
happen the other day and figured it was too lean a mixture at low revs.
Now I'm curious.  
Thx, Don  TR4A

-----Original Message-----
From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net] On
Behalf Of riverside
Sent: Monday, April 11, 2005 1:19 PM
To: fot
Subject: red hot headers

fired up a fresh engine with tube headers last week and the
headers went to glowing red hot and 1000 deg F in about
2 minutes at 1500 rpm.   shut it down.  unfortunately, did not
have an air/fuel meter. last time i did a tractor motor with
cast iron ex manifold, we only got to about 650 and held there.

couple days later ran across an article saying that such a condition
is caused not by a lean mixture, but more likely cam timing or
rich mixture allowing the fire to still be going hard in the header,

don't recall ever getting a TR header that hot.

any comments from the engine guys in our group about the cause of
the glowing headers and hazards to continuous operation.

art de armond

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