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Old 05-01-2004, 10:49 PM
Grumpy
 
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Exhaust welding?

Okay, got a project that is going to involve custom pipe bending and hanger welding on the exhaust pipe.

Never mig welded anything before.. Well unless you count being back in my HS days taking a car battery with two wires attached and seeing if it could weld stuff, then laughing like beavis and butthead

Anyway could you mig weld exhaust pipe hangers? I dont see a reason why not, but I have never done it before.

Thanks.
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Old 05-02-2004, 12:37 AM
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Some guys still are gas welding exhaust systems but shops are mig welding them. Mig is faster and acetylene is a very expensive gas. A bottle of acetylene may look large but there's not very much gas in a bottle of it.
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Old 05-02-2004, 01:53 AM
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Dont forget the TIG welding ...

Most pipe welding done over here is done with TIG.
Its easier to "control" the melted metal, and you get a better looking result ...
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Old 05-02-2004, 08:17 AM
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Yes, MIG will work well. That is all I used on all my piping for the S-10. Probably 40 butt welds or more.

Chris
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Old 05-02-2004, 08:38 AM
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yep mig is fine just unhook your battery first. its also real easy going with a mig. just tac it up there and make sure it all looks nice, then fill it in. watch the tops of the pipes. if its still on the car its a little harder to get to.
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Old 05-02-2004, 11:45 AM
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I agree mig is the way to go and that's all I use. I have never seen an exhaust shop tig weld an exhaust system, that would slow down production and cost more. Not to mention trying to get in the tight places (like above the tubing and between the floor of the car). If it was a stainless system then I could see why you would want to tig it.

If you are going to mig it make sure you pop for the bottle of argon/CO2 and stay away from the flux core wire. Your welds will be much nicer and you won't have all that flash. Flux core if fine for farm equipment when trying to weld out in the wind.

Royce
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Old 05-02-2004, 02:19 PM
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what kind of car is it?

if you have any electronics in it, you may want to disconnect/remove them ...

welding can mess up electronic equipment, even if
the battery is disconnected ....

about the TIG welding, i read to fast, i guess ...
i didnt see that he was about to weld with the exhaust on
the car ... MIG is easier then ...
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Old 05-02-2004, 08:11 PM
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It's not in the car, I'm ordering the 10 foot section of pipe tomorrow as soon as the place opens.

It's for my isuzu, it's going to be welded while not on the car, the pipe will be bent first, the marked as to where the hangers go and then welded and cut in sections.

thanks.

Picked a mig welder up for $190.00.
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Old 05-02-2004, 08:19 PM
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man where can you get a mig for 190 cheapest around here is like 400
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