stock exhaust pipe size
02-22-2005, 07:21 PM
#11
Guest
Posts: n/a
Re: stock exhaust pipe size
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
> >
> >
>
>
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
> >
> >
>
>
02-22-2005, 07:21 PM
#12
Guest
Posts: n/a
Re: stock exhaust pipe size
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
> >
> >
>
>
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
> >
> >
>
>
02-22-2005, 07:21 PM
#13
Guest
Posts: n/a
Re: stock exhaust pipe size
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
> >
> >
>
>
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
> >
> >
>
>
02-22-2005, 07:52 PM
#14
Guest
Posts: n/a
Re: stock exhaust pipe size
I think it was 1 7/8 actually.
I have my 86 CJ7 running a 2" straight pipe back to a Dynomax muffler
with good results.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Pi-eyed Piper wrote:
>
> 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 have my 86 CJ7 running a 2" straight pipe back to a Dynomax muffler
with good results.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Pi-eyed Piper wrote:
>
> 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
02-22-2005, 07:52 PM
#15
Guest
Posts: n/a
Re: stock exhaust pipe size
I think it was 1 7/8 actually.
I have my 86 CJ7 running a 2" straight pipe back to a Dynomax muffler
with good results.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Pi-eyed Piper wrote:
>
> 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 have my 86 CJ7 running a 2" straight pipe back to a Dynomax muffler
with good results.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Pi-eyed Piper wrote:
>
> 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
02-22-2005, 07:52 PM
#16
Guest
Posts: n/a
Re: stock exhaust pipe size
I think it was 1 7/8 actually.
I have my 86 CJ7 running a 2" straight pipe back to a Dynomax muffler
with good results.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Pi-eyed Piper wrote:
>
> 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 have my 86 CJ7 running a 2" straight pipe back to a Dynomax muffler
with good results.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Pi-eyed Piper wrote:
>
> 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
02-22-2005, 08:45 PM
#17
Guest
Posts: n/a
Re: stock exhaust pipe size
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
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
02-22-2005, 08:45 PM
#18
Guest
Posts: n/a
Re: stock exhaust pipe size
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
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
02-22-2005, 08:45 PM
#19
Guest
Posts: n/a
Re: stock exhaust pipe size
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
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
02-22-2005, 10:41 PM
#20
Guest
Posts: n/a
Re: stock exhaust pipe size
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
> > >
> > >
> >
> >
>
>
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
> > >
> > >
> >
> >
>
>