Does anyone have a link that references the stock pipe size of an 89YJ, 4.2L

thanks

Jason

 

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

 

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

 

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

 

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

 

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

 

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

 

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
>
>

 

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
>
>

 

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
>
>