[Farmall] 1949 H Exhaust Pipe

[corley5 at forestryforum.com]

  I've welded them in place with nickle cast rod still on the engine. 
Clean both up real good with a wire wheel.  Get the pipe lined up in the
manifold the way you want and then heat it and the manifold cherry red
where they meet.  Weld a little on one side then skip directly across
and weld a little.  I've welded them all the way around and welded on
only two sides.  Both methods have held up fine.  As long as you don't
have any gas leaks there shouldn't be problem but I filled my tanks 1st
and covered them with an old piece of canvas tarp before I started
playing with fire.

Greg W.
Wolverine, Mi


> *Thanks for the quick reply, John.  I don't know what "chased" means.  Is
> that the same as tapping?  * *It does appear as if there were threads in
> the manifold at one time, but they are almost indistinguishable.  **Rust
> and carbon buildup, I suppose.  I've never tried to tap cast iron.  **Are
> there any pitfalls that I should know about? Tim*
>
> On Wed, Jun 6, 2012 at 3:19 PM, Gwinn, John J (GE Transportation) <
> john.J.gwinn at ge.com> wrote:
>
>> >From my experience, there is no adhesive product for the application
>> you
>> describe.  The original manifold was threaded for two inch normal pipe
>> thread (NPT).  The manifold threads need to be "chased" and a new
>> threaded
>> pipe stub screwed in-place.  Such a repair will give you an adequate
>> exhaust seal and provide sufficient support for your muffler or exhaust
>> pipe.  Such a repair is fairly inexpensive and quick to apply.
>>
>> -----Original Message-----
>> From: farmall-bounces at lists.antique-tractor.com [mailto:
>> farmall-bounces at lists.antique-tractor.com] On Behalf Of Tim Savelle
>> Sent: Wednesday, June 06, 2012 3:07 PM
>> To: Farmall/IHC mailing list
>> Subject: [Farmall] 1949 H Exhaust Pipe
>>
>> Got a problem.  The exhaust pipe on my 1949H broke lose from the
>> manifold
>> recently when I hit a bump.  The pipe is 2" black iron pipe, and a
>> previous
>> owner had apparently not welded it very good to the manifold.  Someone
>> in
>> my tractor club suggested grinding down the end of the pipe until it
>> fits
>> inside the manifold and drive it in place.  I did that, but afraid of
>> breaking the manifold driving it in I decided to seat it good and try to
>> seal it.  I've tried two different compounds:  a muffler sealer from a
>> parts store and JB Weld.  Neither held up under the heat.  I don't think
>> a
>> welder is going to be willing to try to weld or braze it back into place
>> because of the proximity to the gas tank and other meltable things, and
>> I
>> would prefer not to take off the manifold nor the gas tank due to the
>> time
>> involved.  Does anyone know of a sealing compound of some sort that will
>> stand up to the heat at the intersection of the exhaust pipe and
>> manifold?
>>  Guess I'm looking for a quick, easy fix here if one can be found to
>> prevent extended down time for repairs.  Thanks a bunch, Tim
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