Cutting welds

[poormillionaire2]

So, I was going to replace my catback this summer, but I found out that TSP makes a true-dual system for the LT1 for the same price as the catback I was considering to get. But the problem is that my dumbass muffler shop weled my y-pipe to my passenger side collector. Its a slip-fit, so I was wondering if its possible to cut the y-pipe off the collector without ruining the header. I was thinking that I could just get a cut-off wheel and cut the surface of just where its welded and then slip the pipes off each other. Is that possible? Has anyone else tried/done something like this?

[wrightz28]

I think a angle grinder would be easier to take down the weld, then slip the pipe, may take a little flanaggleing but a cut off wheel, runs much higher rpms and scores more chance of doing damage the the grinder.

Note, this will throw a lot of hot sparks around so plan accordingly.

[goldz28]

Sawsal, or whatever they are called.

http://cgi.ebay.com/CRAFTSMAN-172-26...ayphotohosting

[skibum1111]

Use the sawzall to cut the pipe, remove the header and do some surgery on a bench. Just be careful not to wreck the collector, and an angle grinder will be best for the surgery.

[poormillionaire2]

Well, the header is not coming off the car if it doesn't have to. It was a bitch to put in, so it will be a bitch to remove. I just wanted to keep it in the car and grind down the welds and remove the pipes.

[wrightz28]

Originally Posted by poormillionaire2

. I just wanted to keep it in the car and grind down the welds and remove the pipes.

4 /12" angle grinder

Sawsall I knew a guy who wanted a rag top so bad, had a POS Riviera, case of beer and a sawzall, do the math.

[poormillionaire2]

Angle grinder...I'll keep that in mind.
Won't probably do this for awhile, but just trying to think/plan ahead for the summer. Thanks guys.