Exhaust Install

[intimidator2000]

I just bought exhaust and was having it installed when the guy who was installing it said the bolts are rusted out that he has to weld my new pipe to the old pipe and I was wondering would that be problem.

 

[dsmclipse97]

only if you needed to take it off...

 

[totaleclipse_05]

Did you buy a full exhaust or just like a muffler? If it's a full exhaust, it should have a flange that can bolt up to like the cat. You shouldn't need to weld it to the existing pipe.

 

[intimidator2000]

its a full exhaust but my cat bolts is rusted out, so he was telling me that he would have cut the flange out and weld the pipe to my cat pipe.

 

[Locke]

If it is a full exhaust, have him cut the old bolts off (or whatever) and make him bolt it on. It is always best to have it done right. (especially when you are paying for the labor)

 

[Locke]

I guess it is a full exhaust. Do as ^^ above, anyways.

 

[intimidator2000]

The only thing is that flange on my cat is rusted together too.

 

[DSMcrazy3]

I would just get a high flow cat(a real one) to compliment the exhaust and that way it can still be bolted up. It'll be a bit more pricey but worth it.

 

[totaleclipse_05]

The only thing is that flange on my cat is rusted together too.

You can always break them loose once the bolts are off. Mine was rusted beyond unbolting and they took a torch to them and got them off. If I ever want to bolt it back up, I can just drill holes into the cat's flanges instead of using the studs that were on there and then use regular nuts and bolts to bolt it up to the exhaust.

 

[cs82685]

The only thing is that flange on my cat is rusted together too.

This isn't a big problem, read on...

You can always break them loose once the bolts are off. Mine was rusted beyond unbolting and they took a torch to them and got them off. If I ever want to bolt it back up, I can just drill holes into the cat's flanges instead of using the studs that were on there and then use regular nuts and bolts to bolt it up to the exhaust.

Bingo this is exactly what I did when I bolted up my turbo dp to my stock cat. stock dp and cat were inseparable. I was working on the opposite side of the cat, but the same principle applies. A grinder with a cutting wheel between the flanges made them no longer inseparable. After they were separated, I just had to drill out where the stock bolts where, clean up the flange a bit and get some new hardware.

Sounds like you're guy is talking about cutting after the flange and cutting the flange of your nice new catback then welding them together instead of just cutting between the two flanges (cat and stock cat-back) and bolting it up to the flange on the cat like he should Sure it's easier for him to cut through your pipes than to cut through the flanges, but that doesn't help you if you ever want to remove the exhaust, especially if you end up wanting to sell it.

 

[intimidator2000]

would there be any performance problems if he welds it together.

 

[Locke]

No performance problems at all.

But you paid for a kit that had flanges on it, why not use them? Its really not that difficult to separate the old flanges if you are equipped. The muffler shop is equipped.

I had to do about the same thing, and I am sure I don't have all the tools at my disposal that a muffler shop does. It took me, probably about an hour, maybe a little more, to get all my exhaust hung. I did it in my garage.

IMO they should do it right, or not do it at all. I am guessing you have, what, 50 or 60 (or more) muffler shops near you?

The end result is the same, if he welds the pipe on, or bolts it up. It is always up to you.

 

[4UH8ERS]

would there be any performance problems if he welds it together.

These guys are giving you great advice, you should listen to them. If you are going to let the guy weld it regardless of what we tell you then why are even asking. We are trying to help, please don't ask us a question yet ignore our advice.

Welding an exhuast has nothing to do with changing the bends or altering the dimensions of the piping, therefore its not going to effect the performance.

 

[totaleclipse_05]

Just tell the guy to stop being lazy and do it right. It took my exhaust guy about 5 min to take the cat out from start to finish. Don't cut up a perfectly new cat-back exhaust because the guy is lazy. If that's what he wants to do, go to another one.

 

[intimidator2000]

I am trying to see the pros and the cons.

 

[Alvin77]

There are absolutely no pros (for you) if he welds it on

The only reason he wants to weld it is so that he doesn't have to spend an extra 5 minutes separating the flanges

 

[zd0gg]

hey guys,

i am bumping this thread up, because i was trying to install a cat-back and me and a friend could not get one of the bolts on the flange connecting the muffler section of pipe and the s shaped pipe. We got two of the bolts out of the flange, they were sorta on the sides, and there is a third which is a bit higher, or more up towards the bottom of the car. We put a bunch of wd-40 and that sob still didnt budge.

Gave up for the night, do you guys have any suggestions?

We got a suggestion to use a torch, but i was like....well we put alot of wd-40, and it like got sprayed on the pipes a lil to, and might of gotten on other parts, so.....i was like i am not trying to create a bonfire under the car.

Thanks

 

[slow420at]

i had the same thing i gust used the drill and made other holes