i need to rotate a flange on my exhaust, i cant get it to line up. My plan is to cut the exhaust pipe about 2 inches behind the flange and then rotate and weld it back on. i have an aftermarket stainless steel exhaust. im wondering what kind of setting i should set my wire feed welder too. its a medium sized one with gas and all that, not a little hobby welder or anything. thanks a lot guys. any pointers would be great.

 

A make and model number would help. Also what thickness is the piping?

Best bet is just to get some metal that is the same thickness as what you need to weld and try out different settings on that before hand. Use stainless steel wire if possible so the welds won't rust.

 

try to find out what kind of stainless you've got, and get the proper wire for your application.

 

not to discourage you,but it sounds like you're pretty inexperienced when it comes to welding-you may be better off to go ahead and cut the pipe,mark the correct orientation,then take it to a muffler shop to be welded.i wouldn't think anybody would charge you more than $10.
knowing how to weld is a great skill to have,but this would be an expensive part to be your learning project.i'd recommend,as said above,at least getting some scrap metal(preferably of the same thickness as your header)and learn on it first.
Chris

 

i have plenty of experience welding, and am pretty good at it (not to brag). The thing is, everytime I use this welder my buddy has, it just doens't work right for me. The welds come out really really shitty. The exhaust is T-304 stainless steel and is maybe an 1/8" or so thick. Your basic aftermarket stainless exhaust. Its a 91 civic......

 

assuming the welder is decent quality,and functioning properly,it sounds like you need to play with the wire speed and/or heat settings.get some scrap stuff and play around until you get it set up right.
Chris

 

I SERIOUSLY doubt your exhaust is 1/8" thick. Most likely it's .050"- maybe .062", but I doubt it.
If your buddy has a gasless welder that explains why you're having problems welding with it.
As for your application, rule of thumb is 1 amp per ten thousandths (ie 5 amps for .050"). Make sure your cut is perpendicular to the axis of the pipe or you're going to end up welding two ellipses back together instead of two circles. Just tack it in three or four places before you try to lay the whole bead on so the gap doesn't pull apart as you move around the pipe.

 

ok, bad guestimate on my part But the welder is pretty decent and has a gas tank attached, its not a little play welder Is there anything I should set the gas tank to? Or just open it and your good. I noticed there is an adjuster so what should I adjust it to?