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Welding Exhaust - Question For You Welders Out There

Old May 3, 2022 | 01:48 PM
  #21  
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Originally Posted by Brandon318
It took about 20 minutes to drop the entire thing but I also have a entirely rust-free CA disco. Definitely soak the manifold nuts in some kind of penetrant and let it do it's thing for 20 minutes. (I use Liquid Wrench. PB Blaster is the famous one, but LW works a lot better in my experience. I used PB foreeevvverrrr and then watched a ProjectFarm video comparing a bunch of brands. LW won, so I gave it a shot, and yeah, it's way better.) Leave the front cross member in so when the manifold nuts are undone (easy to do under the car with extensions) it has a place to rest while you make sure everything (o2 sensors) are disconnected and such. I'd leave the tailpipe portion in unless you need to weld something there too. Just remove from the manifold connection to the back of the resonator.
I'm not planning on replacing the studs, but if they do break off, any reason why I can't just use stainless bolts instead of studs?
 
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Old May 3, 2022 | 02:30 PM
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That project farm video is worth the watch, and so are the two by AvE. PB is about useless.

You could go back with stainless bolts, or stainless all thread and cut your own studs.
 
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Old May 5, 2022 | 08:05 PM
  #23  
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Got the exhaust out (good call Brandon). As best I can tell I only have one visible crack. Should I just run a bead around each flange anyway?

 
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Old May 5, 2022 | 10:21 PM
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I did. It's only a matter of time until the rest of the welds give way.

I noticed a HUGE difference in the sound of the truck after doing this. Such an improvement.
 
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Old May 6, 2022 | 06:30 AM
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This is one of those things I would just outsource to a muffler shop, I think.

And 3 credit hours of my college degree are from a welding class. Long ago and in a galaxy far, far away. Oxy-acetylene and electric. Where I grew up, many of the local farmers had oxy-acetylene setups.
 
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Old May 6, 2022 | 08:22 AM
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Originally Posted by mln01
This is one of those things I would just outsource to a muffler shop, I think.

And 3 credit hours of my college degree are from a welding class. Long ago and in a galaxy far, far away. Oxy-acetylene and electric. Where I grew up, many of the local farmers had oxy-acetylene setups.
I hear you and you're probably right. I just wanted to see if this is something I could pick up on my own. I've always wanted to see if I could pick it up and the new entry level flux core welders are supposed to be pretty easy to use. We'll see. I may end up regretting my decision.
 
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