You just have to watch out for leaks from the cut. If the cut is still
exposed it allows a jet of exhaust to blow out at the floorboards. This
can get inside the vehicle.

Mike

Ben wrote:
>
> Well.. It was easier then doing drum brakes..imho.. Once we got the old CAT
> off, it took us about 15 minutes to put the new one on.. It took us more
> time to go to the Muffler shop to get the 9in extention then it did to get
> the CAT off... We used an impact wrench to tighten the clamps down.. So I am
> not too worried about leaks..
>
> Ben
> 95 YJ 2.5
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40FA8701.655DE84@sympatico.ca...
> > I gave up doing exhausts years ago because as you found out, a properly
> > installed system has the clamps on tight enough to crease the pipes
> > together so they can never just fall off.
> >
> > It is just plain too much trouble to cut and hand pound the pipes apart
> > as I don't have air tools.
> >
> > I have also seen a mess of pipes lately that a sawsall reciprocating saw
> > wouldn't even cut.
> >
> > I do not recommend anyone do their own and I don't consider having to
> > cut and chisel something off as 'easy'.
> >
> > How did you address the left over cut in the pipe? Oh, that is what the
> > extension you had to go back for was for right?
> >
> > If you left the cut there, then you have a potentially deadly leak.
> > Carbon Monoxide is nasty stuff.
> >
> > Also up here in Canada, the warranty is void on the muffler or cat if
> > you install it yourself. I prefer to pay and get a 'lifetime warranty'
> > on mine.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Ben wrote:
> > >
> > > Well..I am posting this because of alot of people have asked about
> changing
> > > the CAT out on their Jeep. I changed my CAT today.. It was easy.. And
> alot
> > > cheaper then going to Midas.. Took a buddy and myself about two hours to
> > > change out.. Taking the old one off was what took the largest amount of
> > > time.. Some genius at the plant must had a bad day... They torqued the
> front
> > > clamp down so hard it caused a crease.. It kept the CAT from sliding
> off..
> > > We had to make a cut perpendicular to the pipe and then used an air
> chisel
> > > to get it off.. I got the universal CAT from Advance Auto.. $55 and we
> > > needed a 9 inch pipe section which we got from a exhaust shop for free
> and
> > > they even flanged it for me :) I wish I would have taken pics of
> it
> > > but I forgot my camera at the house...
> > >
> > > One piece of advice.. Brace the tranny before taking the skid plate
> off..
> > > The skid plate is part of the tranny mount..
> > >
> > > I have one question though.. When did they change from using platinum
> > > pellets to this micro honeycomb stuff.. I cut mine open for the fun of
> it
> > > and that is what it had in it...
> > >
> > > I hope this helps anyone one that is reading this...
> > >
> > > Ben
> > > 95 YJ 2.5L

 

We only cut the CAT not the pipe coming from the head.. That pipe is
intact... We cut the CAT just enough to use the air chisle to open it up so
we could slide it off...


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40FBCB41.DA0E13B1@sympatico.ca...
> You just have to watch out for leaks from the cut. If the cut is still
> exposed it allows a jet of exhaust to blow out at the floorboards. This
> can get inside the vehicle.
>
> Mike
>
> Ben wrote:
> >
> > Well.. It was easier then doing drum brakes..imho.. Once we got the old
CAT
> > off, it took us about 15 minutes to put the new one on.. It took us more
> > time to go to the Muffler shop to get the 9in extention then it did to
get
> > the CAT off... We used an impact wrench to tighten the clamps down.. So
I am
> > not too worried about leaks..
> >
> > Ben
> > 95 YJ 2.5
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:40FA8701.655DE84@sympatico.ca...
> > > I gave up doing exhausts years ago because as you found out, a
properly
> > > installed system has the clamps on tight enough to crease the pipes
> > > together so they can never just fall off.
> > >
> > > It is just plain too much trouble to cut and hand pound the pipes
apart
> > > as I don't have air tools.
> > >
> > > I have also seen a mess of pipes lately that a sawsall reciprocating
saw
> > > wouldn't even cut.
> > >
> > > I do not recommend anyone do their own and I don't consider having to
> > > cut and chisel something off as 'easy'.
> > >
> > > How did you address the left over cut in the pipe? Oh, that is what
the
> > > extension you had to go back for was for right?
> > >
> > > If you left the cut there, then you have a potentially deadly leak.
> > > Carbon Monoxide is nasty stuff.
> > >
> > > Also up here in Canada, the warranty is void on the muffler or cat if
> > > you install it yourself. I prefer to pay and get a 'lifetime
warranty'
> > > on mine.
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Ben wrote:
> > > >
> > > > Well..I am posting this because of alot of people have asked about
> > changing
> > > > the CAT out on their Jeep. I changed my CAT today.. It was easy..
And
> > alot
> > > > cheaper then going to Midas.. Took a buddy and myself about two
hours to
> > > > change out.. Taking the old one off was what took the largest amount
of
> > > > time.. Some genius at the plant must had a bad day... They torqued
the
> > front
> > > > clamp down so hard it caused a crease.. It kept the CAT from sliding
> > off..
> > > > We had to make a cut perpendicular to the pipe and then used an air
> > chisel
> > > > to get it off.. I got the universal CAT from Advance Auto.. $55 and
we
> > > > needed a 9 inch pipe section which we got from a exhaust shop for
free
> > and
> > > > they even flanged it for me :) I wish I would have taken pics
of
> > it
> > > > but I forgot my camera at the house...
> > > >
> > > > One piece of advice.. Brace the tranny before taking the skid plate
> > off..
> > > > The skid plate is part of the tranny mount..
> > > >
> > > > I have one question though.. When did they change from using
platinum
> > > > pellets to this micro honeycomb stuff.. I cut mine open for the fun
of
> > it
> > > > and that is what it had in it...
> > > >
> > > > I hope this helps anyone one that is reading this...
> > > >
> > > > Ben
> > > > 95 YJ 2.5L

 

We only cut the CAT not the pipe coming from the head.. That pipe is
intact... We cut the CAT just enough to use the air chisle to open it up so
we could slide it off...


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40FBCB41.DA0E13B1@sympatico.ca...
> You just have to watch out for leaks from the cut. If the cut is still
> exposed it allows a jet of exhaust to blow out at the floorboards. This
> can get inside the vehicle.
>
> Mike
>
> Ben wrote:
> >
> > Well.. It was easier then doing drum brakes..imho.. Once we got the old
CAT
> > off, it took us about 15 minutes to put the new one on.. It took us more
> > time to go to the Muffler shop to get the 9in extention then it did to
get
> > the CAT off... We used an impact wrench to tighten the clamps down.. So
I am
> > not too worried about leaks..
> >
> > Ben
> > 95 YJ 2.5
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:40FA8701.655DE84@sympatico.ca...
> > > I gave up doing exhausts years ago because as you found out, a
properly
> > > installed system has the clamps on tight enough to crease the pipes
> > > together so they can never just fall off.
> > >
> > > It is just plain too much trouble to cut and hand pound the pipes
apart
> > > as I don't have air tools.
> > >
> > > I have also seen a mess of pipes lately that a sawsall reciprocating
saw
> > > wouldn't even cut.
> > >
> > > I do not recommend anyone do their own and I don't consider having to
> > > cut and chisel something off as 'easy'.
> > >
> > > How did you address the left over cut in the pipe? Oh, that is what
the
> > > extension you had to go back for was for right?
> > >
> > > If you left the cut there, then you have a potentially deadly leak.
> > > Carbon Monoxide is nasty stuff.
> > >
> > > Also up here in Canada, the warranty is void on the muffler or cat if
> > > you install it yourself. I prefer to pay and get a 'lifetime
warranty'
> > > on mine.
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Ben wrote:
> > > >
> > > > Well..I am posting this because of alot of people have asked about
> > changing
> > > > the CAT out on their Jeep. I changed my CAT today.. It was easy..
And
> > alot
> > > > cheaper then going to Midas.. Took a buddy and myself about two
hours to
> > > > change out.. Taking the old one off was what took the largest amount
of
> > > > time.. Some genius at the plant must had a bad day... They torqued
the
> > front
> > > > clamp down so hard it caused a crease.. It kept the CAT from sliding
> > off..
> > > > We had to make a cut perpendicular to the pipe and then used an air
> > chisel
> > > > to get it off.. I got the universal CAT from Advance Auto.. $55 and
we
> > > > needed a 9 inch pipe section which we got from a exhaust shop for
free
> > and
> > > > they even flanged it for me :) I wish I would have taken pics
of
> > it
> > > > but I forgot my camera at the house...
> > > >
> > > > One piece of advice.. Brace the tranny before taking the skid plate
> > off..
> > > > The skid plate is part of the tranny mount..
> > > >
> > > > I have one question though.. When did they change from using
platinum
> > > > pellets to this micro honeycomb stuff.. I cut mine open for the fun
of
> > it
> > > > and that is what it had in it...
> > > >
> > > > I hope this helps anyone one that is reading this...
> > > >
> > > > Ben
> > > > 95 YJ 2.5L

 

We only cut the CAT not the pipe coming from the head.. That pipe is
intact... We cut the CAT just enough to use the air chisle to open it up so
we could slide it off...


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40FBCB41.DA0E13B1@sympatico.ca...
> You just have to watch out for leaks from the cut. If the cut is still
> exposed it allows a jet of exhaust to blow out at the floorboards. This
> can get inside the vehicle.
>
> Mike
>
> Ben wrote:
> >
> > Well.. It was easier then doing drum brakes..imho.. Once we got the old
CAT
> > off, it took us about 15 minutes to put the new one on.. It took us more
> > time to go to the Muffler shop to get the 9in extention then it did to
get
> > the CAT off... We used an impact wrench to tighten the clamps down.. So
I am
> > not too worried about leaks..
> >
> > Ben
> > 95 YJ 2.5
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:40FA8701.655DE84@sympatico.ca...
> > > I gave up doing exhausts years ago because as you found out, a
properly
> > > installed system has the clamps on tight enough to crease the pipes
> > > together so they can never just fall off.
> > >
> > > It is just plain too much trouble to cut and hand pound the pipes
apart
> > > as I don't have air tools.
> > >
> > > I have also seen a mess of pipes lately that a sawsall reciprocating
saw
> > > wouldn't even cut.
> > >
> > > I do not recommend anyone do their own and I don't consider having to
> > > cut and chisel something off as 'easy'.
> > >
> > > How did you address the left over cut in the pipe? Oh, that is what
the
> > > extension you had to go back for was for right?
> > >
> > > If you left the cut there, then you have a potentially deadly leak.
> > > Carbon Monoxide is nasty stuff.
> > >
> > > Also up here in Canada, the warranty is void on the muffler or cat if
> > > you install it yourself. I prefer to pay and get a 'lifetime
warranty'
> > > on mine.
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Ben wrote:
> > > >
> > > > Well..I am posting this because of alot of people have asked about
> > changing
> > > > the CAT out on their Jeep. I changed my CAT today.. It was easy..
And
> > alot
> > > > cheaper then going to Midas.. Took a buddy and myself about two
hours to
> > > > change out.. Taking the old one off was what took the largest amount
of
> > > > time.. Some genius at the plant must had a bad day... They torqued
the
> > front
> > > > clamp down so hard it caused a crease.. It kept the CAT from sliding
> > off..
> > > > We had to make a cut perpendicular to the pipe and then used an air
> > chisel
> > > > to get it off.. I got the universal CAT from Advance Auto.. $55 and
we
> > > > needed a 9 inch pipe section which we got from a exhaust shop for
free
> > and
> > > > they even flanged it for me :) I wish I would have taken pics
of
> > it
> > > > but I forgot my camera at the house...
> > > >
> > > > One piece of advice.. Brace the tranny before taking the skid plate
> > off..
> > > > The skid plate is part of the tranny mount..
> > > >
> > > > I have one question though.. When did they change from using
platinum
> > > > pellets to this micro honeycomb stuff.. I cut mine open for the fun
of
> > it
> > > > and that is what it had in it...
> > > >
> > > > I hope this helps anyone one that is reading this...
> > > >
> > > > Ben
> > > > 95 YJ 2.5L

 

We only cut the CAT not the pipe coming from the head.. That pipe is
intact... We cut the CAT just enough to use the air chisle to open it up so
we could slide it off...


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:40FBCB41.DA0E13B1@sympatico.ca...
> You just have to watch out for leaks from the cut. If the cut is still
> exposed it allows a jet of exhaust to blow out at the floorboards. This
> can get inside the vehicle.
>
> Mike
>
> Ben wrote:
> >
> > Well.. It was easier then doing drum brakes..imho.. Once we got the old
CAT
> > off, it took us about 15 minutes to put the new one on.. It took us more
> > time to go to the Muffler shop to get the 9in extention then it did to
get
> > the CAT off... We used an impact wrench to tighten the clamps down.. So
I am
> > not too worried about leaks..
> >
> > Ben
> > 95 YJ 2.5
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:40FA8701.655DE84@sympatico.ca...
> > > I gave up doing exhausts years ago because as you found out, a
properly
> > > installed system has the clamps on tight enough to crease the pipes
> > > together so they can never just fall off.
> > >
> > > It is just plain too much trouble to cut and hand pound the pipes
apart
> > > as I don't have air tools.
> > >
> > > I have also seen a mess of pipes lately that a sawsall reciprocating
saw
> > > wouldn't even cut.
> > >
> > > I do not recommend anyone do their own and I don't consider having to
> > > cut and chisel something off as 'easy'.
> > >
> > > How did you address the left over cut in the pipe? Oh, that is what
the
> > > extension you had to go back for was for right?
> > >
> > > If you left the cut there, then you have a potentially deadly leak.
> > > Carbon Monoxide is nasty stuff.
> > >
> > > Also up here in Canada, the warranty is void on the muffler or cat if
> > > you install it yourself. I prefer to pay and get a 'lifetime
warranty'
> > > on mine.
> > >
> > > Mike
> > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > 88 Cherokee 235 BFG AT's
> > >
> > > Ben wrote:
> > > >
> > > > Well..I am posting this because of alot of people have asked about
> > changing
> > > > the CAT out on their Jeep. I changed my CAT today.. It was easy..
And
> > alot
> > > > cheaper then going to Midas.. Took a buddy and myself about two
hours to
> > > > change out.. Taking the old one off was what took the largest amount
of
> > > > time.. Some genius at the plant must had a bad day... They torqued
the
> > front
> > > > clamp down so hard it caused a crease.. It kept the CAT from sliding
> > off..
> > > > We had to make a cut perpendicular to the pipe and then used an air
> > chisel
> > > > to get it off.. I got the universal CAT from Advance Auto.. $55 and
we
> > > > needed a 9 inch pipe section which we got from a exhaust shop for
free
> > and
> > > > they even flanged it for me :) I wish I would have taken pics
of
> > it
> > > > but I forgot my camera at the house...
> > > >
> > > > One piece of advice.. Brace the tranny before taking the skid plate
> > off..
> > > > The skid plate is part of the tranny mount..
> > > >
> > > > I have one question though.. When did they change from using
platinum
> > > > pellets to this micro honeycomb stuff.. I cut mine open for the fun
of
> > it
> > > > and that is what it had in it...
> > > >
> > > > I hope this helps anyone one that is reading this...
> > > >
> > > > Ben
> > > > 95 YJ 2.5L