Re: '98 TJ- Help replacing cat
 

Thanks for the info, all. Anyone use a sawsall for this job.

DougW wrote:
> Mike Romain wrote:
>> Once the u-bolt has crimped the two pipes together you need an air
>> chisel to get them apart. The outer pipe has to be stretched or cut
>> on an angle and peeled off the inner pipe, it will not slip off.
>>
>> Usually it is fastest to just cut the sucker and add a 4" 'butt'
>> coupling with two new clamps.
>
> I managed to get my old cat off with an angle grinder for the big work
> and a diamond cutting wheel on the dremmel for where the grinder would
> not fit. Took a while to cut and peel pipe back.
>

Re: '98 TJ- Help replacing cat
 

Thanks for the info, all. Anyone use a sawsall for this job.

DougW wrote:
> Mike Romain wrote:
>> Once the u-bolt has crimped the two pipes together you need an air
>> chisel to get them apart. The outer pipe has to be stretched or cut
>> on an angle and peeled off the inner pipe, it will not slip off.
>>
>> Usually it is fastest to just cut the sucker and add a 4" 'butt'
>> coupling with two new clamps.
>
> I managed to get my old cat off with an angle grinder for the big work
> and a diamond cutting wheel on the dremmel for where the grinder would
> not fit. Took a while to cut and peel pipe back.
>

Re: '98 TJ- Help replacing cat
 

Thanks for the info, all. Anyone use a sawsall for this job.

DougW wrote:
> Mike Romain wrote:
>> Once the u-bolt has crimped the two pipes together you need an air
>> chisel to get them apart. The outer pipe has to be stretched or cut
>> on an angle and peeled off the inner pipe, it will not slip off.
>>
>> Usually it is fastest to just cut the sucker and add a 4" 'butt'
>> coupling with two new clamps.
>
> I managed to get my old cat off with an angle grinder for the big work
> and a diamond cutting wheel on the dremmel for where the grinder would
> not fit. Took a while to cut and peel pipe back.
>

Re: '98 TJ- Help replacing cat
 

Yes, the sawsall will put the cut into the pipes. You need a good
blade. I have managed to just cut the one outer pipe on the angle to
start the peel with my sawsall when I had room to use it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

GTK wrote:
>
> Thanks for the info, all. Anyone use a sawsall for this job.
>
> DougW wrote:
> > Mike Romain wrote:
> >> Once the u-bolt has crimped the two pipes together you need an air
> >> chisel to get them apart. The outer pipe has to be stretched or cut
> >> on an angle and peeled off the inner pipe, it will not slip off.
> >>
> >> Usually it is fastest to just cut the sucker and add a 4" 'butt'
> >> coupling with two new clamps.
> >
> > I managed to get my old cat off with an angle grinder for the big work
> > and a diamond cutting wheel on the dremmel for where the grinder would
> > not fit. Took a while to cut and peel pipe back.
> >

Re: '98 TJ- Help replacing cat
 

Yes, the sawsall will put the cut into the pipes. You need a good
blade. I have managed to just cut the one outer pipe on the angle to
start the peel with my sawsall when I had room to use it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

GTK wrote:
>
> Thanks for the info, all. Anyone use a sawsall for this job.
>
> DougW wrote:
> > Mike Romain wrote:
> >> Once the u-bolt has crimped the two pipes together you need an air
> >> chisel to get them apart. The outer pipe has to be stretched or cut
> >> on an angle and peeled off the inner pipe, it will not slip off.
> >>
> >> Usually it is fastest to just cut the sucker and add a 4" 'butt'
> >> coupling with two new clamps.
> >
> > I managed to get my old cat off with an angle grinder for the big work
> > and a diamond cutting wheel on the dremmel for where the grinder would
> > not fit. Took a while to cut and peel pipe back.
> >

Re: '98 TJ- Help replacing cat
 

Yes, the sawsall will put the cut into the pipes. You need a good
blade. I have managed to just cut the one outer pipe on the angle to
start the peel with my sawsall when I had room to use it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

GTK wrote:
>
> Thanks for the info, all. Anyone use a sawsall for this job.
>
> DougW wrote:
> > Mike Romain wrote:
> >> Once the u-bolt has crimped the two pipes together you need an air
> >> chisel to get them apart. The outer pipe has to be stretched or cut
> >> on an angle and peeled off the inner pipe, it will not slip off.
> >>
> >> Usually it is fastest to just cut the sucker and add a 4" 'butt'
> >> coupling with two new clamps.
> >
> > I managed to get my old cat off with an angle grinder for the big work
> > and a diamond cutting wheel on the dremmel for where the grinder would
> > not fit. Took a while to cut and peel pipe back.
> >