Just picked up a 210amp CIG Transmig. Going to give a shot at making up some exhaust and intercooler piping. Was curious to how people go about smoothing the inside of the weld once the pipes have been welded together. If the join was close to an end you could get a die grinder in there. But what about if a long pipe was welded on, there would be no way to reach the weld on the inside correct?

just dremel it or something

justin, thats what he said he could do if its a small pipe. but he wants to know how do u smooth it if its a long pipe and the dremel cant reach

oh sorry i just read more, lol looks like your in a bit of a pickle can you get extensions or something for drills? :/

fill the pipe with sand and shake it. will get rid of any loose welds that exist

how good can you weld? if your careful, you wont need to clean out the inside...

Quote: Originally Posted by Nukz fill the pipe with sand and shake it. will get rid of any loose welds that exist lol...not quite shouldnt need to cllean it up if your a good welder

if its straight piece, a long rat tail file will work. if curved, not a great deal u can do...other than learn to adjust your welder to make sure that penetration into the metal is enough / correct.

if you but em up nice and close with like a 1mm gap you shouldnt have any problems. nothing major anyway

Quote: Originally Posted by airbagsVL lol...not quite shouldnt need to cllean it up if your a good welder mate heard from heaps of fabricators thats how its done. if the two adjoining faces arent 100% flush, theres bound to be some loose weld around the void, especially if your a noob

or purge weld it maybe like they do with stainless tig welding, you put a regulated low pressure into the pipe and block off the other end. works with tig it may work with mig? just a thought

with this pipe u will only need a 1mm gap if that for peno, if u can weld pretty good make the gap a touch smaller and burn it in hot so u r sure ive got the peno and if u move quick enuff it wont burn right through and be an ugly thing...... lol

hmm i guess ill go grab some pipes and practice and see how good I can get it.

maybe even grind a SMALL v into the pipes and make no gap........ that way ull get peno to the pipe and u wont have any burn thorugh... leave a 1mm flat face... dont v right the way through man......... should be mint like that.......

yeah just butt it hard up and put some weld around it. i wouldnt get too caught up trying to get perfect peno. your not welding pressure vessels here

you could always just stop start if you have to, that way you know you wont burn through and its easy to clean up.

Quote: Originally Posted by R34NRG yeah just butt it hard up and put some weld around it. i wouldnt get too caught up trying to get perfect peno. your not welding pressure vessels here boilermaker/welder?? reason: we just went through tafe and **** me all i heard about was pressure vessel welds, as im a 4th year app boiley im stuck welding at tafe for last 2 weeks........... yaya

Get the two joints to butt up perfectly without gaps and V-grove the the ends if you know what i mean, and you shouldn't need any inside finishing. Practice on a few straight bits so you can see how much penetration you have with your settings.

sand blast, but if its just turbo back exorst dont bother

u cnt sand blast inside ur pipe to clean weld man.....