I welded up some piping with a crappy flux core mig my old roomate let me use. It looks like crap and likely has holes. Can I grind down all the welds so that everyhting is flush and have it rewelded with a tig or a better mig, or do I need to just cut the pipe before the welds and re do everyhting. If I have to I'll just get some more pipe, aluminized isn't expensive. Here's a picture of the atrocity:

 

It'll probably weld like **** and pop all over the place if you go over it with tig.

 

ok, so better to just cut the pipe and re do everyhting? no big deal, just want it done right

 

if your not running a crazy amount of boost i would just grind them down. look for any holes and just weld those holes closed.

 

i KNOW there's holes because I had to fill some holes when i used a flashlight trick to spot holes. if i grind it down, there's gonna be more holes. I won't be using much boost. 3psi on a basemap till i can get to a dyno to get tuned at 8psi. I'm sure it wouldn't cost much to have piping welded together at like 6 joints for the cold side, especially if i cut the pipe to fit beforehand.

 

It would of came out better if you would of cleaned the galvanized coating of first before you welded it, but I would just grind it down and fill your holes and then grind it down again and paint it.

 

I don't have access to a grinder anymore, so i cant fill anyhting, but i still have my trusty angle grinder

 

grind them down and then go over them with again with a MIG. Your guy obviously sucks at flux core its no harder than regular mig just a bit messier. After you wire wheel a flux core weld down you'd be hard pressed to tell the difference.

 

i made those crappy welds... it was my first time welding on a crappy welder, most likely not setup right either. Well, when i test fit it the bov needs to be moved b/c on the other accord i took out cruise control. it's here in this one so im gonna hafta redo it anyways. oh well.