I think the stock size is 1 7/8ths or something like that. In any case it's
under 2.

It doesn't matter if you are simply going to match the header all of the way
back. I would get a good low restriction muffler to make your Jeep quiet.
The exhaust note should be a low rumble that is sweet and pleasant under
power, but silent with a slight gurgle while idling.

Frankly, I do not understand your opposition to a cat, other than the cost
and you might not be required to have one so spending the money is a waste.




"Pi-eyed Piper" <no@way.com> wrote in message
news:l0QSd.8425$9a3.829@edtnps91...
> That's what I'm planning to do, 2.25 all the way back. Minus the cat.
thats
> GONE in a big way. Just wondering if stock was 2.25", I guess not. I think
> it's 2" but I'll measure
>
>
>
>
>
> "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> news:nt-dnfoNJojLV4bfRVn-pQ@ez2.net...
> > When I put on a 2" header, I replaced the entire exhaust system with 2"
> > stuff. I have been told that I lost a small amount of low end torque
> because
> > I removed all of the back pressure. I am not sure I can explain why
torque
> > and backpressure are related, but assuming this is true, the only stock
> > parts in the system should be the tail pipe itself.
> >
> > Since you are adding a 2.25" header, then I would suggest a 2.25 CAT and
> > muffler, and go with a 2" tail pipe to choke the system down a little.
> Scrap
> > all of the stock crap that you have and put in all new low restriction
> stuff
> > made of 304 Stainless Steel, and close the system down with a smaller
tail
> > pipe.
> >
> >
> >
> >
> > "Pi-eyed Piper" <no@way.com> wrote in message
> > news:9oPSd.8418$9a3.6664@edtnps91...
> > > thanks bill, thats a good idea....and simple
> > >
> > > In Alberta we have pretty lean smog rules, we can run pretty much any
> > setup
> > > hassle free...I have a 2.25" header I'm installing, I was just curious
> > what
> > > the stock stuff was..2"?
> > >
> > >
> > > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > > news:421BAF98.A1EEAEBF@***.net...
> > > > Hi Jason,
> > > > It's against the law to cut the catalytic convert out of the
> > > > system. ;-) Got something to make a caliber out of:
> > > > http://www.----------.com/caliber.jpg Clamp two straight edges
> together
> > > > parallel to transfer the measurement.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:--------------------
> > > >
> > > > Pi-eyed Piper wrote:
> > > > >
> > > > > Does anyone have a link that references the stock pipe size of an
> > 89YJ,
> > > 4.2L
> > > > >
> > > > > thanks
> > > > >
> > > > > Jason
> > >
> > >
> >
> >
>
>

 

I think the stock size is 1 7/8ths or something like that. In any case it's
under 2.

It doesn't matter if you are simply going to match the header all of the way
back. I would get a good low restriction muffler to make your Jeep quiet.
The exhaust note should be a low rumble that is sweet and pleasant under
power, but silent with a slight gurgle while idling.

Frankly, I do not understand your opposition to a cat, other than the cost
and you might not be required to have one so spending the money is a waste.




"Pi-eyed Piper" <no@way.com> wrote in message
news:l0QSd.8425$9a3.829@edtnps91...
> That's what I'm planning to do, 2.25 all the way back. Minus the cat.
thats
> GONE in a big way. Just wondering if stock was 2.25", I guess not. I think
> it's 2" but I'll measure
>
>
>
>
>
> "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> news:nt-dnfoNJojLV4bfRVn-pQ@ez2.net...
> > When I put on a 2" header, I replaced the entire exhaust system with 2"
> > stuff. I have been told that I lost a small amount of low end torque
> because
> > I removed all of the back pressure. I am not sure I can explain why
torque
> > and backpressure are related, but assuming this is true, the only stock
> > parts in the system should be the tail pipe itself.
> >
> > Since you are adding a 2.25" header, then I would suggest a 2.25 CAT and
> > muffler, and go with a 2" tail pipe to choke the system down a little.
> Scrap
> > all of the stock crap that you have and put in all new low restriction
> stuff
> > made of 304 Stainless Steel, and close the system down with a smaller
tail
> > pipe.
> >
> >
> >
> >
> > "Pi-eyed Piper" <no@way.com> wrote in message
> > news:9oPSd.8418$9a3.6664@edtnps91...
> > > thanks bill, thats a good idea....and simple
> > >
> > > In Alberta we have pretty lean smog rules, we can run pretty much any
> > setup
> > > hassle free...I have a 2.25" header I'm installing, I was just curious
> > what
> > > the stock stuff was..2"?
> > >
> > >
> > > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > > news:421BAF98.A1EEAEBF@***.net...
> > > > Hi Jason,
> > > > It's against the law to cut the catalytic convert out of the
> > > > system. ;-) Got something to make a caliber out of:
> > > > http://www.----------.com/caliber.jpg Clamp two straight edges
> together
> > > > parallel to transfer the measurement.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:--------------------
> > > >
> > > > Pi-eyed Piper wrote:
> > > > >
> > > > > Does anyone have a link that references the stock pipe size of an
> > 89YJ,
> > > 4.2L
> > > > >
> > > > > thanks
> > > > >
> > > > > Jason
> > >
> > >
> >
> >
>
>

 

Bill says some really stupid stuff from time to time <hehehe>, but I am with
him 100% on this point.

Just go visit the local Mom&Pop Muffler store in your town. They will
fabricate you something that is hands down better than anything you can get
on the 'net. And, if there is a diner near by, you can get breakfast while
you wait.





"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:421BE01F.77C33D4D@***.net...
> I'd give your local shop the work, I bet they'l custom fabricate to
> your specs far cheaper than anything you may find online:
>
http://shopping.yahoo.com/search;_yl...st+system&did=
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Pi-eyed Piper wrote:
> >
> > That's what I'm planning to do, 2.25 all the way back. Minus the cat.
thats
> > GONE in a big way. Just wondering if stock was 2.25", I guess not. I
think
> > it's 2" but I'll measure

 

Bill says some really stupid stuff from time to time <hehehe>, but I am with
him 100% on this point.

Just go visit the local Mom&Pop Muffler store in your town. They will
fabricate you something that is hands down better than anything you can get
on the 'net. And, if there is a diner near by, you can get breakfast while
you wait.





"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:421BE01F.77C33D4D@***.net...
> I'd give your local shop the work, I bet they'l custom fabricate to
> your specs far cheaper than anything you may find online:
>
http://shopping.yahoo.com/search;_yl...st+system&did=
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Pi-eyed Piper wrote:
> >
> > That's what I'm planning to do, 2.25 all the way back. Minus the cat.
thats
> > GONE in a big way. Just wondering if stock was 2.25", I guess not. I
think
> > it's 2" but I'll measure

 

Bill says some really stupid stuff from time to time <hehehe>, but I am with
him 100% on this point.

Just go visit the local Mom&Pop Muffler store in your town. They will
fabricate you something that is hands down better than anything you can get
on the 'net. And, if there is a diner near by, you can get breakfast while
you wait.





"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:421BE01F.77C33D4D@***.net...
> I'd give your local shop the work, I bet they'l custom fabricate to
> your specs far cheaper than anything you may find online:
>
http://shopping.yahoo.com/search;_yl...st+system&did=
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Pi-eyed Piper wrote:
> >
> > That's what I'm planning to do, 2.25 all the way back. Minus the cat.
thats
> > GONE in a big way. Just wondering if stock was 2.25", I guess not. I
think
> > it's 2" but I'll measure

 

Getting rid of the cat means one less thing to go wrong...one less power
robbing emission's crapola

"Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
news:KdSdnY25QtL_YIbfRVn-tw@ez2.net...
> I think the stock size is 1 7/8ths or something like that. In any case
it's
> under 2.
>
> It doesn't matter if you are simply going to match the header all of the
way
> back. I would get a good low restriction muffler to make your Jeep quiet.
> The exhaust note should be a low rumble that is sweet and pleasant under
> power, but silent with a slight gurgle while idling.
>
> Frankly, I do not understand your opposition to a cat, other than the cost
> and you might not be required to have one so spending the money is a
waste.
>
>
>
>
> "Pi-eyed Piper" <no@way.com> wrote in message
> news:l0QSd.8425$9a3.829@edtnps91...
> > That's what I'm planning to do, 2.25 all the way back. Minus the cat.
> thats
> > GONE in a big way. Just wondering if stock was 2.25", I guess not. I
think
> > it's 2" but I'll measure
> >
> >
> >
> >
> >
> > "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> > news:nt-dnfoNJojLV4bfRVn-pQ@ez2.net...
> > > When I put on a 2" header, I replaced the entire exhaust system with
2"
> > > stuff. I have been told that I lost a small amount of low end torque
> > because
> > > I removed all of the back pressure. I am not sure I can explain why
> torque
> > > and backpressure are related, but assuming this is true, the only
stock
> > > parts in the system should be the tail pipe itself.
> > >
> > > Since you are adding a 2.25" header, then I would suggest a 2.25 CAT
and
> > > muffler, and go with a 2" tail pipe to choke the system down a little.
> > Scrap
> > > all of the stock crap that you have and put in all new low restriction
> > stuff
> > > made of 304 Stainless Steel, and close the system down with a smaller
> tail
> > > pipe.
> > >
> > >
> > >
> > >
> > > "Pi-eyed Piper" <no@way.com> wrote in message
> > > news:9oPSd.8418$9a3.6664@edtnps91...
> > > > thanks bill, thats a good idea....and simple
> > > >
> > > > In Alberta we have pretty lean smog rules, we can run pretty much
any
> > > setup
> > > > hassle free...I have a 2.25" header I'm installing, I was just
curious
> > > what
> > > > the stock stuff was..2"?
> > > >
> > > >
> > > > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > > > news:421BAF98.A1EEAEBF@***.net...
> > > > > Hi Jason,
> > > > > It's against the law to cut the catalytic convert out of the
> > > > > system. ;-) Got something to make a caliber out of:
> > > > > http://www.----------.com/caliber.jpg Clamp two straight edges
> > together
> > > > > parallel to transfer the measurement.
> > > > > God Bless America, ßill O|||||||O
> > > > > mailto:--------------------
> > > > >
> > > > > Pi-eyed Piper wrote:
> > > > > >
> > > > > > Does anyone have a link that references the stock pipe size of
an
> > > 89YJ,
> > > > 4.2L
> > > > > >
> > > > > > thanks
> > > > > >
> > > > > > Jason
> > > >
> > > >
> > >
> > >
> >
> >
>
>

 

Getting rid of the cat means one less thing to go wrong...one less power
robbing emission's crapola

"Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
news:KdSdnY25QtL_YIbfRVn-tw@ez2.net...
> I think the stock size is 1 7/8ths or something like that. In any case
it's
> under 2.
>
> It doesn't matter if you are simply going to match the header all of the
way
> back. I would get a good low restriction muffler to make your Jeep quiet.
> The exhaust note should be a low rumble that is sweet and pleasant under
> power, but silent with a slight gurgle while idling.
>
> Frankly, I do not understand your opposition to a cat, other than the cost
> and you might not be required to have one so spending the money is a
waste.
>
>
>
>
> "Pi-eyed Piper" <no@way.com> wrote in message
> news:l0QSd.8425$9a3.829@edtnps91...
> > That's what I'm planning to do, 2.25 all the way back. Minus the cat.
> thats
> > GONE in a big way. Just wondering if stock was 2.25", I guess not. I
think
> > it's 2" but I'll measure
> >
> >
> >
> >
> >
> > "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> > news:nt-dnfoNJojLV4bfRVn-pQ@ez2.net...
> > > When I put on a 2" header, I replaced the entire exhaust system with
2"
> > > stuff. I have been told that I lost a small amount of low end torque
> > because
> > > I removed all of the back pressure. I am not sure I can explain why
> torque
> > > and backpressure are related, but assuming this is true, the only
stock
> > > parts in the system should be the tail pipe itself.
> > >
> > > Since you are adding a 2.25" header, then I would suggest a 2.25 CAT
and
> > > muffler, and go with a 2" tail pipe to choke the system down a little.
> > Scrap
> > > all of the stock crap that you have and put in all new low restriction
> > stuff
> > > made of 304 Stainless Steel, and close the system down with a smaller
> tail
> > > pipe.
> > >
> > >
> > >
> > >
> > > "Pi-eyed Piper" <no@way.com> wrote in message
> > > news:9oPSd.8418$9a3.6664@edtnps91...
> > > > thanks bill, thats a good idea....and simple
> > > >
> > > > In Alberta we have pretty lean smog rules, we can run pretty much
any
> > > setup
> > > > hassle free...I have a 2.25" header I'm installing, I was just
curious
> > > what
> > > > the stock stuff was..2"?
> > > >
> > > >
> > > > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > > > news:421BAF98.A1EEAEBF@***.net...
> > > > > Hi Jason,
> > > > > It's against the law to cut the catalytic convert out of the
> > > > > system. ;-) Got something to make a caliber out of:
> > > > > http://www.----------.com/caliber.jpg Clamp two straight edges
> > together
> > > > > parallel to transfer the measurement.
> > > > > God Bless America, ßill O|||||||O
> > > > > mailto:--------------------
> > > > >
> > > > > Pi-eyed Piper wrote:
> > > > > >
> > > > > > Does anyone have a link that references the stock pipe size of
an
> > > 89YJ,
> > > > 4.2L
> > > > > >
> > > > > > thanks
> > > > > >
> > > > > > Jason
> > > >
> > > >
> > >
> > >
> >
> >
>
>

 

Getting rid of the cat means one less thing to go wrong...one less power
robbing emission's crapola

"Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
news:KdSdnY25QtL_YIbfRVn-tw@ez2.net...
> I think the stock size is 1 7/8ths or something like that. In any case
it's
> under 2.
>
> It doesn't matter if you are simply going to match the header all of the
way
> back. I would get a good low restriction muffler to make your Jeep quiet.
> The exhaust note should be a low rumble that is sweet and pleasant under
> power, but silent with a slight gurgle while idling.
>
> Frankly, I do not understand your opposition to a cat, other than the cost
> and you might not be required to have one so spending the money is a
waste.
>
>
>
>
> "Pi-eyed Piper" <no@way.com> wrote in message
> news:l0QSd.8425$9a3.829@edtnps91...
> > That's what I'm planning to do, 2.25 all the way back. Minus the cat.
> thats
> > GONE in a big way. Just wondering if stock was 2.25", I guess not. I
think
> > it's 2" but I'll measure
> >
> >
> >
> >
> >
> > "Jeff Strickland" <spamcatcher@yahoo.net> wrote in message
> > news:nt-dnfoNJojLV4bfRVn-pQ@ez2.net...
> > > When I put on a 2" header, I replaced the entire exhaust system with
2"
> > > stuff. I have been told that I lost a small amount of low end torque
> > because
> > > I removed all of the back pressure. I am not sure I can explain why
> torque
> > > and backpressure are related, but assuming this is true, the only
stock
> > > parts in the system should be the tail pipe itself.
> > >
> > > Since you are adding a 2.25" header, then I would suggest a 2.25 CAT
and
> > > muffler, and go with a 2" tail pipe to choke the system down a little.
> > Scrap
> > > all of the stock crap that you have and put in all new low restriction
> > stuff
> > > made of 304 Stainless Steel, and close the system down with a smaller
> tail
> > > pipe.
> > >
> > >
> > >
> > >
> > > "Pi-eyed Piper" <no@way.com> wrote in message
> > > news:9oPSd.8418$9a3.6664@edtnps91...
> > > > thanks bill, thats a good idea....and simple
> > > >
> > > > In Alberta we have pretty lean smog rules, we can run pretty much
any
> > > setup
> > > > hassle free...I have a 2.25" header I'm installing, I was just
curious
> > > what
> > > > the stock stuff was..2"?
> > > >
> > > >
> > > > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > > > news:421BAF98.A1EEAEBF@***.net...
> > > > > Hi Jason,
> > > > > It's against the law to cut the catalytic convert out of the
> > > > > system. ;-) Got something to make a caliber out of:
> > > > > http://www.----------.com/caliber.jpg Clamp two straight edges
> > together
> > > > > parallel to transfer the measurement.
> > > > > God Bless America, ßill O|||||||O
> > > > > mailto:--------------------
> > > > >
> > > > > Pi-eyed Piper wrote:
> > > > > >
> > > > > > Does anyone have a link that references the stock pipe size of
an
> > > 89YJ,
> > > > 4.2L
> > > > > >
> > > > > > thanks
> > > > > >
> > > > > > Jason
> > > >
> > > >
> > >
> > >
> >
> >
>
>