[AT] Hole in exhaust manifold....

[charlie hill]

Al,  I don't know how hot manifolds get in degrees F and I'm not trying to 
defend Walt ....... errrrr John but I've seen manifolds on a 454 truck 
engine glowing red from one end to the other and down the exhaust pipes and 
the engine was at normal operating temperature.  I can't tell you if brazing 
will hold up to that or not.  I guess it depends on what kind of metal you 
braise it with.  We used to braise tail pipes together with clothes hangers 
among other things.

Charlie
----- Original Message ----- 
From: "Al Jones" <aljones at ncfreedom.net>
To: "'Antique tractor email discussion group'" 
<at at lists.antique-tractor.com>
Sent: Monday, January 29, 2007 6:21 PM
Subject: RE: [AT] Hole in exhaust manifold....


> If a manifold got to 2000 degrees, the pistons and associated parts of
> the engine would be in the process of, or already turned into, molten
> puddles.  Now it's been a while since I taught this stuff, but doesn't
> braise melt around 800?
>
> Al
>
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of John Kennedy
> Sent: Monday, January 29, 2007 12:39 PM
> To: at at lists.antique-tractor.com
> Subject: Re: [AT] Hole in exhaust manifold....
>
> Exhaust manifolds can get hot enough to burn though cast iron why would
> anyone want to use something that can't stand heat above a few hundred
> degrees. I have personally seem some of mine red hot when run hard that
> is
> over 2000 degrees.  Like I said before either braise it or replace it.
>
>
>
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