CK5
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One Piece at a Time: My 1985 Diesel Suburban
- Thread starter AgDieseler
- Start date
I've just been reading up on welding stainless steel for a work project and it made me think of your exhaust project. When you TIG stainless do you still have to passivate the weld areas?
I’m definitely not the pro, but I’ll answer that I only carefully clean inside and outside of every piece, wipe it with an alcohol, give it a lot of gas coverage with a large cup, and keep heat input low enough that the heat affected zone rainbow never gets outside my gas lense. All that is designed to keep any stray bits of ferrous material out of the weld area, and prevent the rando’ surface corrosion later on. When I’m done welding, I wipe it down again, and that’s it.
David
We're likely going to be MIG welding so I think the passivating is more of an issue. I don't know anything about TIG so I was curious about the difference.
One last straight section and a turn down is next.
David
David
Passivation of stainless welds can be done regardless of the welding process used. It's meant to clean and stabilize the weld. The rainbow colors are also removed from the weld. Returning it to its natural state.
All the stainless high pressure pipe that I transported to the base while in FL was passovated before being installed.
https://tigbrush.com/start/
First one that came up in my search.
It was several hours, split up into a few different occasions, over a few days.......
As always, I love seeing your work.
Martin
Thanks bud. It’s a lot of fun learning new skills working on this old truck.
Also, the turbo shop just called. It’s ready to go. Seal kits are quick, and they had the billet compressor wheel on the shelf.
After this, I’m going to be able to hang with the flat brims in the bro dozer aisle.
David
Ha, I do remember reading a post a few days ago saying there was no need for a billet wheel.
Martin
Martin
I reserve the right to change my mind. Seeing as the cast wheel is rated for 325hp, it’s still probably not “needed.”
David
I’m still waiting for the clickity clack of secondary stop rings and bumps
I’m still waiting for the clickity clack of secondary stop rings and bumps
Doubtful you'll hear it over the clacky clack of the 6.2
I’m running out of things that will keep me from a solid test drive!
I usually can’t hear my thoughts, but I prefer the rattle anyway.
Fancy bits.
Majestic works fast.
Tailpipe welding is 70% done. After 4 hours, I started losing focus and called it a night. Pies chew the hours, but I enjoy the work.
With all the pieces of pie, lots of extra tacks are useful to keep the 304 for wiggling out of shape.
It’s all setup for tomorrow.
David
What is this meter for?
That’s a NOCO brand battery charger.
Done.
Test fit install.
Build a hanger.
Weld the turndown.
Install turbo.
Party.
David
Test fit install.
Build a hanger.
Weld the turndown.
Install turbo.
Party.
David
Cocktail Hour starts Thursdays at 6:30PM CST.....
Don't say you weren't warned.
-G
Don't say you weren't warned.
-G
I’ll cheers to that. 
Just under the wire.
David
David
Will you just leave the exhaust like that for everyone to admire!?
Talking about the tig welding.
Talking about the tig welding.
