How to do a Weld on Exhaust Pipe..

[pozidriv]

Now my real question, can you simply (tig?) weld an exhaust pipe, or is it some sort of galvanized (sendzimir?, zincor?) steel?

Thanks!

 

[Zrexxer]

That's not TIG, it's MIG, or more accurately, GMAW. And yes, you can just MIG through most plating/coatings on something like exhaust tubing. Although the welds will be subject to rust in the heat-affected zone, assuming it's not stainless of course.

That being said, the rest of that video was full of WTF. Like welding with absolutely no eye protection.

 

[pi_guy]

Now my real question, can you simply (tig?) weld an exhaust pipe, or is it some sort of galvanized (sendzimir?, zincor?) steel?

Thanks!

Have a hard time watching idiots not using proper equipment.

TIG works great with stainless

MIG is fine for regular steel especially for over head welding which is rather difficult with TIG

 

[shoot summ]

Don't have your answer, but got a tickle out of the commentary associated with the video.

"bad cadillac converter"...

I would think his welds could be a little better with the proper eye/face protection as well...

 

[MagnumForce]

You can mig galvanized without any problem other that the spiderwebs it throws off. That said the fumes are very toxic and will make you sick with very little exposure. Make sure you have plenty of ventilation.

 

[pozidriv]

The description below the video is as incredible as the video itself, I checked out their website, cause I thought it was a trollvideo. Guess what; more idiocy...

I know he was mig welding, but I've got access to a TIG machine, I already removed the exhaust, so doing it with the tig won't be too hard.
It's not made of stainless steel (it stems from a 1986 Volvo 340), so I was wondering what the coating might be and if I would need to grind it off before tig welding it.

Also, I heard that some kinds of galvanized steel produce a lot of toxic gases when welding on them? I would ask George from Clearwater, but I doubt he can still read this...

Edit: MagnumForce already answered the fume question. I guess it's best to grind it to the bare steel then, and use some tectyl ML coating afterwards?

 

[Movover]

"Busted Cadillac converter and we replaced it and did a custom welding job. now this Caravan will get better gas mileage runs client along with smooth riding."

Wonder if my Cadillac converter is bad? Every time I drive it feels and looks like a minivan not very smooth either!

 

[malibu101]

My gosh, it seemed like he was going for the award for how much weld can a guy put on one small area of exhaust pipe.

 

[madcrisis]

Holy Shnikes hes not even blinking when he strikes the arc! his eyes have to be itching like crazy if he can still even see!

 

[MagnumForce]

Grind or not, you still get the fumes.

 

[rlitman]

can you simply (tig?) weld an exhaust pipe, or is it some sort of galvanized (sendzimir?, zincor?) steel?

Exhaust pipe is aluminized, not galvanized. Burning off the coating is not known to be dangerous.

 

[Bondo]

Ayuh,... That video is Proof youtube is not the place to learn how to weld,....

 

[Jason280]

Ho
Lee
Fuk

 

[rockinacummins]

Not a good example video,but yes you can simply MIG exhaust.

 

[JDon99]

I also like how he is smacking the weld with the the cup on the gun...wtf

 

[xxaler]

I wish they did a close up at the end, I love those exhaust mungballs all along the bottom and sides, and nothing but an open gap at the top!

 

[erty67]

How is that guy not blind??

 

[NUTTSGT]

My gosh, it seemed like he was going for the award for how much weld can a guy put on one small area of exhaust pipe.

LOL, I was thinking the same thing till I remembered him saying something about filling a hole at the beginning.

 

[Beefbuzz]

Wow.

I look like I am ready to wrestle a grizzly bear when I weld, this guy would be better off wearing a bikini and sunglasses.

 

[Rt jam]

I can kind of understand some random person mixing up Cadillac and catalytic convertor but the video is from a muffler shop.

 

[INSP380]

That was painful to watch. That has to be the biggest POS weld job I've seen on the internet yet. I want to call the number on his shirt and ask for the blind guy.....idiot!

Steve

 

[GTA Matt]

I seriously only lasted about 2.8 seconds in, but after reading some comments, I suppose we have found the guy that welded this jewel?

I mig weld exhaust daily, flex pipes, mufflers, converters, duals, etc. As long as you're not standing over the weld directly, the fumes aren't noticeable. Smaller mig welders won't really give you the bad flash burns (it still hurts) that a big machine or a tig will, but it's still very very stupid to weld unprotected, and we all know the long term affects are far worse then just your eyes burning a few hours later. I can't believe this is a real shop showing this garbage.

 

[RedneckWelder]

*****...

 

[classicJackets]

I can't be the only one who thought that was Danny Devito at first..

 

[Engine]

Das wat dey call fillwing a hol.
:tard::tard::tard:

 

[justanengineer]

What's that old saying about 5 lbs of wire in a 2 inch weld?

Oops nvm, its 10 lbs of **** in a 5 lb bag! Still seems appropriate tho.

 

[Jure]

OSHA approved!

 

[Wrenchinfool]

Ho
Lee
Fuk[/QUOTE

We
Too
Low

 

[dlcwent]

OSHA approved!

Of course. They have high standards.

 

[thehorse13]

At least they were nice enough to tell us where NOT to go for all our, "automotive needs".

 

[pozidriv]

This doesn't seem like an aluminized exhaust to me? Grinding off the coating and using a TIG won't gas me?

 

[Bigplum]

Get a welder near that and it will just blow thru , it's rotten on the inside, time for a new one

 

[Bondo]

Get a welder near that and it will just blow thru , it's rotten on the inside, time for a new one

Ayuh,.... Agreed,... a waste of time weldin' on that,....

 

[pozidriv]

****, I did not want to hear that
I'm just a hobbyist and I really like to actually repair something, instead of just swapping it out. I agree that replacement is probably the best option here, but is there no conceivable repair possible? Like welding some plate on top of the gap and then attach the support hook on that plate? I'm definitely going to try welding on it, if only to fail and learn from it I'm sure the guys at clearwater muffler shop would do the same.
Thanks for the replies!!

 

[Heavymetalmechanic]

For a 'get-r-done' type fix:

Find some thin scrap plate/sheet, cut it to fit over the hole with at least 1" overlap, contour the one side so it fits flush against the curved edge of the muffler.
The thicker rim of the muffler will handle the weld better. Smear the hole with muffler putty and press the patch you made into place. Tack weld the upper and lower contact points along the rim. Let the putty cure overnight (it may not fully cure, some require exhaust temps...) to limit the off gassing when you finish welding along the rim.

Lots of potential 'hiccups' with this, but it will keep you on the road until you can source a new/better one.

Just an option. I do agree that based on that picture you will be running into more issues with that exhaust system in the near future.

 

[DekeT]

Exhaust pipe is aluminized, not galvanized. Burning off the coating is not known to be dangerous.

Burning of any metal produces toxic fumes.

 

[MagnumForce]

But nothing like galvanized

 

[slyonedoofy]

Now my real question, can you simply (tig?) weld an exhaust pipe, or is it some sort of galvanized (sendzimir?, zincor?) steel?

Thanks!

I wonder if I can get him to weld my gas tank?

 

[altersaddle]

This doesn't seem like an aluminized exhaust to me? Grinding off the coating and using a TIG won't gas me?

Grinding off the coating will also grind off the paper-thin metal that's left there. It fell off for a reason, like others have said.

Also, the TIG puddle is going to absorb tons of nasty contaminants from the far side of the sheet.

Personally, I would braze a repair on this if you really really really needed to keep it. Buy a new one, unless you want to fix it again in two months.

 

[Zeke]

He gets away with welding w/o a dark lens because he is standing in line with the gun, He can't even see his arc, he's welding by feel and sound. You can tell by the sound of the arc that he's just guessing at it. Not saying this is anything but bad because the radiation can and will bounce off nearby parts and burn the eyes. I bet under a dirty car a lot of the radiation is absorbed.

If you look at the sun with a disc to block the sun itself you see the corona. I think there may be a corona effect in a welding arc but I don't know. No need to know because I wear the right gear.

You sometimes see someone and/or a helper close their eyes for a tack. Or they turn their head. If the arc can see your eyelids its going to send radiation right through the eyelid to the retina. All shops or anywhere welding is done with more than one person in the room should have welding curtains.