I ripped out my exhaust today to replace a bad catalytic converter and
muffler, and I noticed there wasn't any kind of gasket where the
exhaust headers meet with the exhaust pipe that goes to the cat. Just
metal to metal. Is there supposed to be a donut gasket or something
in there?

I looked at the walker exhaust page for the YJ which is here
http://www.walkerexhaust.com/ExhaustCouponScreen.asp
and it looks like they sell the gaskets I'm asking about, but only for
the 6cyl and earlier 4cyl exhausts (91-92) ... which makes me wonder
if there isn't supposed to be a gasket for my '94 4cyl.

 

mr_man did pass the time by typing:
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?

Depends, but usually yes. You can run across a composite O ring, flat
gasket, or lead wedge O ring depending on the coupling.

Look for a lead like O ring, it usally sticks to the header side just
below the flange. That pipe by the way is called a "down pipe" between
the header and the cat.

--
DougW

 

mr_man did pass the time by typing:
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?

Depends, but usually yes. You can run across a composite O ring, flat
gasket, or lead wedge O ring depending on the coupling.

Look for a lead like O ring, it usally sticks to the header side just
below the flange. That pipe by the way is called a "down pipe" between
the header and the cat.

--
DougW

 

mr_man did pass the time by typing:
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?

Depends, but usually yes. You can run across a composite O ring, flat
gasket, or lead wedge O ring depending on the coupling.

Look for a lead like O ring, it usally sticks to the header side just
below the flange. That pipe by the way is called a "down pipe" between
the header and the cat.

--
DougW

 

mr_man did pass the time by typing:
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?

Depends, but usually yes. You can run across a composite O ring, flat
gasket, or lead wedge O ring depending on the coupling.

Look for a lead like O ring, it usally sticks to the header side just
below the flange. That pipe by the way is called a "down pipe" between
the header and the cat.

--
DougW

 

The book I have for an '94 YJ four cylinder calls for that donut.
It's been my experience that if it uses that type of O ring gasket, that
it'll leak like crazy with anything else, so you must have after market
headers.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

mr_man wrote:
>
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?
>
> I looked at the walker exhaust page for the YJ which is here
> http://www.walkerexhaust.com/ExhaustCouponScreen.asp
> and it looks like they sell the gaskets I'm asking about, but only for
> the 6cyl and earlier 4cyl exhausts (91-92) ... which makes me wonder
> if there isn't supposed to be a gasket for my '94 4cyl.

 

The book I have for an '94 YJ four cylinder calls for that donut.
It's been my experience that if it uses that type of O ring gasket, that
it'll leak like crazy with anything else, so you must have after market
headers.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

mr_man wrote:
>
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?
>
> I looked at the walker exhaust page for the YJ which is here
> http://www.walkerexhaust.com/ExhaustCouponScreen.asp
> and it looks like they sell the gaskets I'm asking about, but only for
> the 6cyl and earlier 4cyl exhausts (91-92) ... which makes me wonder
> if there isn't supposed to be a gasket for my '94 4cyl.

 

The book I have for an '94 YJ four cylinder calls for that donut.
It's been my experience that if it uses that type of O ring gasket, that
it'll leak like crazy with anything else, so you must have after market
headers.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

mr_man wrote:
>
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?
>
> I looked at the walker exhaust page for the YJ which is here
> http://www.walkerexhaust.com/ExhaustCouponScreen.asp
> and it looks like they sell the gaskets I'm asking about, but only for
> the 6cyl and earlier 4cyl exhausts (91-92) ... which makes me wonder
> if there isn't supposed to be a gasket for my '94 4cyl.

 

The book I have for an '94 YJ four cylinder calls for that donut.
It's been my experience that if it uses that type of O ring gasket, that
it'll leak like crazy with anything else, so you must have after market
headers.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

mr_man wrote:
>
> I ripped out my exhaust today to replace a bad catalytic converter and
> muffler, and I noticed there wasn't any kind of gasket where the
> exhaust headers meet with the exhaust pipe that goes to the cat. Just
> metal to metal. Is there supposed to be a donut gasket or something
> in there?
>
> I looked at the walker exhaust page for the YJ which is here
> http://www.walkerexhaust.com/ExhaustCouponScreen.asp
> and it looks like they sell the gaskets I'm asking about, but only for
> the 6cyl and earlier 4cyl exhausts (91-92) ... which makes me wonder
> if there isn't supposed to be a gasket for my '94 4cyl.

 

i have the same year and the same engine, and no gasket or o-ring. but it
also leaks bad. but due to severe rust and corrosion i'm replacing the
headers and down pipe soon.

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:4096E925.39416AA1@***.net...
> The book I have for an '94 YJ four cylinder calls for that donut.
> It's been my experience that if it uses that type of O ring gasket, that
> it'll leak like crazy with anything else, so you must have after market
> headers.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> mr_man wrote:
> >
> > I ripped out my exhaust today to replace a bad catalytic converter and
> > muffler, and I noticed there wasn't any kind of gasket where the
> > exhaust headers meet with the exhaust pipe that goes to the cat. Just
> > metal to metal. Is there supposed to be a donut gasket or something
> > in there?
> >
> > I looked at the walker exhaust page for the YJ which is here
> > http://www.walkerexhaust.com/ExhaustCouponScreen.asp
> > and it looks like they sell the gaskets I'm asking about, but only for
> > the 6cyl and earlier 4cyl exhausts (91-92) ... which makes me wonder
> > if there isn't supposed to be a gasket for my '94 4cyl.