Exhaust pipe

David G · Nov 30, 2020

If I want to get exhaust tubing that is aluminized, can I grind that off so I can weld with Mig?

This is on my air cleaner replacement, body is 5" thinwall tubing.

Janicholson · Nov 30, 2020

Yes, and it doesn't take much to do the trick. Jim

David G · Nov 30, 2020

Thanks, I do not need SS, as I will paint it.

How important is it to have the air go in the outside of filter?

504 · Nov 30, 2020

It is weld through,no need to grind it off. I can't think of anything I have ever been around that pulled the air from the inside to the outside. The only problem I can see is less filter (cubic feet)on the inside than the outside. I can't see where that would be a problem with your application at all. BTW you might want to paint the inside seam on the pipe with cheap silver spray paint,the seam will rust over time,but I have had good results painting the seam.

David G · Nov 30, 2020

I appreciate all the good information.

If I did want to go stainless, any magic to welding it?

jm. · Nov 30, 2020

David not sure I am following you question but most dry element filters are mad for air flow from out to in. Now I am no engineer like you and have no idea why but this has always been stressed in ever school I attended. Will you lay the element down or mount it vertical.

David G · Nov 30, 2020

It will be vertical, fit right into the same place as old oil bath housing. I am converting to dry so that if I put a air flow transmitter in, it will not foul from the carried over oil.

jm. · Nov 30, 2020

Smart move for sure. After I saw your earlier post I started to thinking about location and what was out there already built. I think you will build something that looks better than anything I could think of.

Janicholson · Nov 30, 2020

Yes it is called TIG welding. If you do that it will be pretty slick. No real need for it, especially if the aluminized steel is painted. Jim

David G · Nov 30, 2020

Thanks.

DoubleO7 · Nov 30, 2020

On a round paper filter, there is more media surface exposed to air flow on the outside versus all the folds so close together and inner diameter on the inside.

And you can weld stainless with a mig welder.
Tri-mix gas is usually recommended for best results.
Can use 75/25 mix in a pinch but weld won't be as "pretty".

Welding with a tig machine will leave a artful bead if the operator is good at it.

David G · Nov 30, 2020

Maybe I do carbon steel and paint.

I have the 25/75 gas

johndeere720GA · Dec 1, 2020

Also on one that size it would be difficult to see how dirty it is if the air is flowing inside to out.
One other consideration is pleated filters are re-enforced on the inside (some on the outside as well) but if the element you are looking at is not re-enforced on the outer perimeter i would suggest adding some hardware cloth or other strong screen to keep the element from blowing out.

dr sportster · Dec 1, 2020

The seam is often backed by a piece of copper or brass as a heat sink . Not straight argon but a mix of gases . Sometimes an inert gas is also blown onto the backside of weld or inside a vessel .

MarkB_MI · Dec 2, 2020

I once tried welding stainless with MIG using Ar/CO<sub>2</sub> mix and stainless wire. It worked, but it looked like crap. The carbon in the gas mix reacts with the chrome in the stainless to form chromium carbide. The result is a very black bead that is nearly impossible to grind and is subject to rust. Now I have a TIG welder, and in a utopia so would everybody else.

Exhaust pipe

David G

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Janicholson

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David G

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504

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David G

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jm.

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David G

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jm.

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Janicholson

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David G

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DoubleO7

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