[AT] Hole in exhaust manifold....

Tue Jan 30 03:31:11 PST 2007

Well said Jim & Lyn Evans,

I too am always looking for alternative methods, especially those that are inexpensive yet effective... My Allis Chalmers HD6G came with a home made exhaust manifold and muffler. Its a 4 inch diameter pipe with diamond plate welded on the ends. The previous owner did a decent job. When I got the dozer it was sooo loud... I thought I would go stock to bring the noise down and found that a muffler for that dozer was in the hundreds. At about the same time CT Farm and Country in my town was going out of business, they had a whole shelf full of mufflers... I bought a large one for about $10.00 and bolted it to the top of the homemade manifold... Works great, saved me hundreds of $$$$$. 

Here's a pic where you can make out the home made manifold.

http://cyclerestorer.com/williampowell/redbug/images/hd6g/hd6gnewright.jpg

Then one with the muffler from CT Farm and country... 

http://cyclerestorer.com/williampowell/redbug/images/hd6g/paintedhd6gleft.jpg

Will

Pottstown, PA
 -------------- Original message ----------------------
From: "Jim & Lyn Evans" <jevans at evanstoys.com>
> Since not all of us own stuff that has parts readily available, I think we
> are all looking for advise on how to repair broken items.  Reading about
> everyone's method of repairing manifolds is a lot more informative than
> someone repeating over and over to buy a new one.  Anyone can pick up a
> catalog and credit card and order a new one. The problem is that not all
> manifolds are easy or cheap to replace.  I have one tractor with a manifold
> that will cost me over $500 to replace with a new one.  Used ones are not
> available.  The new one will also take over 6 months to get.  Guess what it
> costs if you have to make your own patterns to make a new manifold.  On one
> of my tractors, I formed a piece of 16 or 18 gauge sheet metal to match the
> shape of the manifold and brazed it in place.  It has been there for over
> two years now without problems.   The original cast manifold lasted 70 years
> of hard use before breaking.  I bet my patch lasts at least 10 years of
> occasional use.  
> 
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Kevin
> Sent: Monday, January 29, 2007 6:10 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Hole in exhaust manifold....
> 
> I never had a heat gauge that would measure 2000 degrees, but I had a 68
> Dodge Super Bee that after changing camshaft in the 413 engine.  And having
> the exhaust valves duration changed so much that after a good run on warm
> engine, the ex manifolds would be glowing red hot. It almost looked like you
> could see through them. Even in bright daylight.
> -----------------------------------------snip
> Now it's been a while since I taught this stuff, but doesn't braise melt
> around 800?
> -------------------------------------------snip
> If your exhaust manifold was made out of brase or brass yes they it would
> melt.
> Since I dont have the measuring device or the car that done it, im out.
> You can lead a horse to water     but can you make it drink ??
> All anyone is doing is trying to say how each and everyone would fix thier
> own manifold if we all had holes in ours.
> I have learned alot of ways to cure the problem and how others approach and
> repair thier stuff. Here I thought that I was the master of rigging oh well
> cant win em all. I still say the manifold is rotten burnt out junk and
> should be replaced.
> But thats just the way I would fix it if it were mine. I hope the putty or
> wharever fixes it and it never gives more trouble.
> Im out.
> ironman
> Kevin Mosier
> 270-388-4052
> 
> ----- 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 5:21 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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> > http://www.antique-tractor.com/mailman/listinfo/at 
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