Needing some help with exhaust issues

What's up everyone.

I was just wondering if someone that is good with exhaust could give me a bit of info. I had some straight pipes put on back before I realized that it was not all that complicated to do. Thinking that having a shop do it would get me on the road faster.....uhh NO... to make it short the guy did a horrible job on the pipes. It looks as if on the driver side pipe he didn't measure it properly and then got lazy and instead of pulling it and makeing another he just welded a peice at the end. That didn't work I am spitting exhaust out of three differant welds. I guess my question is would it be safe to just reweld the problem areas or should I yank the whole thing and start from scratch . I am a bit leary to do so cause all that I have to weld is a little 110W hobby welder not sure if this will do. It is good to fix things around the house to keep the warden off my back, don't know about useing it for this task.

I have done the reasearch it says that it should do the job but it will take a long time to get a good bead. Just thought I would ask to see if anyone had any thoughts on how I could get this fixed. Thanks and have a good one.

( Will get pics when I can get to the house)

 

If you got a welder, just weld it up.

I don't really see the problem.

I'd take the pipe off the car and weld it so you don't have to be laying on your back getting hot nubs in your face and hair and shirt.

exhaust pipe is thin. A hobby welder should weld it just fine.

My advice would be to lay down short beads or maybe even a series of tacks. You don't want to build up too much heat or you'll get blowthrough as your welding and then you'll have to patch a big hole.

What I do is weld....wait wait...metal cools....weld...wait wait....metal cools....weld.


I hope this answers your question.

 

That does answer my question. Thanks for the help.

 

as tingler says i would definatly pull the exhaust down and do it out from under the car. the worst spot to weld exhaust is on the top side right against the floor board because you cant see it or get to it. If anything just clean the old welds up a little and then fill in the holes. i have been through this before with letting someone else do it and its never right. The one that usually welds is only making 5 bucks an hour and knows less then you do about exhaust work and welding.

 

I agree with all of this, you really can't trust many exhaust shops. Even ones that the old guys swear by have gone waaay down hill since the golden days. Its too bad but your best bet is to make the decision and do it on your own.

 

Yeah, there is some more good advice right there.
Clean the area to be welded.

I like to use a wire brush wheel attachement on my 4 1/2" angle grinder.

If you don't have that, get yourself a simple wire brush and scrub the area to be welded real good. You want to see shiny metal.

You probably already know this, but I figured I'd throw it out there anyhow.

Also be careful about welding on exhaust. You can make yoursef sick from the fumes coming off of it. I normally do it outside and as dumb as it sounds, I hold my breath while welding exhaust and walk away to take a breath while the fumes dissapate. It does two things, one it allows the metal to cool and two I'm not breathing the fumes.

 

Thank you all for the great tips. I pulled the pipe lastnight and it was bad. going to get another disk for my grinder today and get to the repairs. Thanks again all of you.