alright so i recently got a new exhaust (cat-back) welded up on my truck. I did not pay much for the amount of work the guy had to do for how tight the exhaust is under my truck, and he did a pretty good job and i like it. I was under my truck the other day feeling around the welds and i noticed some leaks. Now i am no welder but i have at least watched my truck have a couple exhausts put on, so i am familiar with watching welding i guess. the places it is leaking from look very hard to get it and i am out of town so i was going to take it to the closest shop to have them close the leaks. like i said though the the leaks look very hard to get to, so i am wondering should i take it to a shop and try to get them to close it up or can i use JB Weld on the leaks? thanks

 

maybe this was the wrong spot to put this thread....

but if anyone cares i found out JB weld is only good to about 500 degrees i went to advanced auto and picked up some Permatex Muffler and Tailpipe Bandage and some Permatex Muffler and Tailpipe Putty. ideally you are supposed to use the putty then the bandage it probably doesnt matter but i got them both anyways. the putty is good to 2000 degrees so it should hold pretty well and surprisingly it doenst take long to set, you just use the heat of the exhaust to cure the bandage and putty. it states on the putty to not race the motor until putty hardens completely which is about 24 hours, so its good if the car is just a daily driver it says just to let it stand overnight

wish me luck

 

well i put on the putty and the bandages and they look pretty tough i put the putty on last night and just now put the bandages on it looks like a pretty permanent fix, i think they are going to do the job, i have not driven around yet but after a week or so ill post on here to see how it goes

 

does it look like that putty is removable or is it stuck on there for ever?

My chevy's manifold bolts have broken in the back and one side is starting to leak really bad. I was thinking of maby pushing a little of that putty stuff in there to help it because I dont have the money to fix it.

 

just looking at it and feeling around with my hands, it feels like its on there pretty good; however, i think you could probably drill it out or sand it off if need be

oh and update for the bandage material, i think the bandages work the best around a round/flat piece of tubing, i tried wrapping it around the welds and some stuck good, but since its not perfectly flat it did not stick as good as i had hoped, but the putty is on there good enough i don't think it will leak again