welding exhaust pipe

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brewzalot
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welding exhaust pipe

Postby brewzalot » Fri Jan 31, 2020 8:06 pm

Is there any physical reason an underslung exhaust pipe couldn't be cut at angles at the bends and welded instead of bending?

I have access to thin wall tubing, and decent welding skills.
Obviously the look would be a little different but I'm ok with that.

Thoughts ?

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Re: welding exhaust pipe

Postby Slim140 » Fri Jan 31, 2020 8:51 pm

I vote try it, just be careful if you have to tack it together on the tractor and don’t be welding around the gas tank.
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Re: welding exhaust pipe

Postby Jeff Silvey » Sat Feb 01, 2020 8:04 am

I agree with Shane.
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Re: welding exhaust pipe

Postby Gary Dotson » Sat Feb 01, 2020 8:18 am

Sure, exhaust pipes are often welded. Do a nice job welding and you can grind the welds and end up with a good looking pipe.

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Re: welding exhaust pipe

Postby MiCarl » Sat Feb 01, 2020 12:30 pm

Only reason I can think of is hard angles concentrate stresses vs. a curved section. It might be prone to cracking at the joints.
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Larry in WNY
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Re: welding exhaust pipe

Postby Larry in WNY » Tue Feb 04, 2020 8:30 pm

If it's not galvanized yes. Zinc gas is created if welding galvanized metal which is poisonous.
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brewzalot
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Re: welding exhaust pipe

Postby brewzalot » Tue Feb 04, 2020 10:03 pm

MiCarl wrote: It might be prone to cracking at the joints.


Shane N. wrote:don’t be welding around the gas tank


Larry in WNY wrote:If it's not galvanized


No welding near gas or using galvanized pipe, stress is a good point.
I was concerned more with hard angles affecting exhaust air flow.

thanks for the input- will give it a try
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Re: welding exhaust pipe

Postby outdoors4evr » Wed Feb 05, 2020 7:26 am

2 small cuts may turn out better than one large cut and a sharp bend.
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Re: welding exhaust pipe

Postby Clemsonfor » Thu Feb 06, 2020 9:24 am

brewzalot wrote:
MiCarl wrote: It might be prone to cracking at the joints.


Shane N. wrote:don’t be welding around the gas tank


Larry in WNY wrote:If it's not galvanized


No welding near gas or using galvanized pipe, stress is a good point.
I was concerned more with hard angles affecting exhaust air flow.

thanks for the input- will give it a try
Tim


At the size of these exhaust pipes and only 9hp at low rpm I don't think you need to worry much about the exhaust flow path. Doubt you will notice any difference.

If we were talking a 600hp race car then mandrel bends would be what you want and no hard or sharp transitions.


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