O2 Bung Welding - .035 flux

[rcamacho]

I'm planning on welding in a bung for an O2 sensor this week. Is 0.35 flux acceptable or would it be too hot and burn through? Fairly thick 2 1/2" pipe.

 

[blazinzuk]

Depends on how good a welder you are. Not to cop out on you or anything but that would be fine if you know how to weld. You can also stitch weld it. you need to find some stuff to practice on before you start if you are worried about blowing holes through the pipe

 

[Russell]

Try your best to keep most of the arc against the 02 sensor bung, and just slip over towards the pipe a little bit. You'll be far less likely to burn through.

Also, if you have access, use a solid core wire with gas, Its a lot easier to control the bead with it that way

 

[rcamacho]

Thanks. I was able to weld in the bung just fine with .035 flux wire. It looks like heck but it's sealed and should hold just fine.

 

[Russell]

haha, my exhaust looks pretty boogered too. But, for being under the truck, and out of view, its good enough!

 

[87BrnRsd]

I got some cheapo flowtech afterburner headers...and the welds look like crap from the factory. Oh well...still better than manifolds....
-Harrison