91 YJ catalytic converter?
 

Can anyone recommend a catalytic converter for my 91 YJ? There is a
huge difference is prices. I'm going to put it in myself and cannot
weld. Cheaper the better.

Thank you,
CTM

Re: 91 YJ catalytic converter?
 

testert555 wrote:
> Can anyone recommend a catalytic converter for my 91 YJ? There is a
> huge difference is prices. I'm going to put it in myself and cannot
> weld. Cheaper the better.

Get it welded in. (in some states the cat must be welded on the engine
side, has to do with emissions laws)

A good local muffler shop should be able to do the job for $100 or so.

--
DougW

Re: 91 YJ catalytic converter?
 

testert555 wrote:
> Can anyone recommend a catalytic converter for my 91 YJ? There is a
> huge difference is prices. I'm going to put it in myself and cannot
> weld. Cheaper the better.

Get it welded in. (in some states the cat must be welded on the engine
side, has to do with emissions laws)

A good local muffler shop should be able to do the job for $100 or so.

--
DougW

Re: 91 YJ catalytic converter?
 

DougW wrote:
> testert555 wrote:
>> Can anyone recommend a catalytic converter for my 91 YJ? There is a
>> huge difference is prices. I'm going to put it in myself and cannot
>> weld. Cheaper the better.
>
> Get it welded in. (in some states the cat must be welded on the
> engine side, has to do with emissions laws)
>
> A good local muffler shop should be able to do the job for $100 or
> so.

In what states does it have to be welded? Or is this more California
craziness?

--
--
--John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

Re: 91 YJ catalytic converter?
 

DougW wrote:
> testert555 wrote:
>> Can anyone recommend a catalytic converter for my 91 YJ? There is a
>> huge difference is prices. I'm going to put it in myself and cannot
>> weld. Cheaper the better.
>
> Get it welded in. (in some states the cat must be welded on the
> engine side, has to do with emissions laws)
>
> A good local muffler shop should be able to do the job for $100 or
> so.

In what states does it have to be welded? Or is this more California
craziness?

--
--
--John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)

Re: 91 YJ catalytic converter?
 

"DougW" <I.only.read.usenet@invalid.address> wrote in message
news:9Nm3j.27459$aN3.24619@newsfe12.phx...
> testert555 wrote:
> > Can anyone recommend a catalytic converter for my 91 YJ? There
> > is a huge difference is prices. I'm going to put it in myself and
> > cannot weld. Cheaper the better.
>
> Get it welded in. (in some states the cat must be welded on the
> engine side, has to do with emissions laws)
>
> A good local muffler shop should be able to do the job for $100 or so.
>
I can understand the OP's concerns about economy, but a budget converter
installed on the cheap isn't going to last long. Mine (OEM part) has
been on there since the emissions recall of 1995, and is still going
strong. I doubt that the "guts" are still in it, but that is what a
free flow exhaust is for, to let the converter chunks out. Seriously,
this isn't something you want to go cheap on.

Cheers,

Earle



--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

"DougW" <I.only.read.usenet@invalid.address> wrote in message
news:9Nm3j.27459$aN3.24619@newsfe12.phx...
> testert555 wrote:
> > Can anyone recommend a catalytic converter for my 91 YJ? There
> > is a huge difference is prices. I'm going to put it in myself and
> > cannot weld. Cheaper the better.
>
> Get it welded in. (in some states the cat must be welded on the
> engine side, has to do with emissions laws)
>
> A good local muffler shop should be able to do the job for $100 or so.
>
I can understand the OP's concerns about economy, but a budget converter
installed on the cheap isn't going to last long. Mine (OEM part) has
been on there since the emissions recall of 1995, and is still going
strong. I doubt that the "guts" are still in it, but that is what a
free flow exhaust is for, to let the converter chunks out. Seriously,
this isn't something you want to go cheap on.

Cheers,

Earle



--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
> DougW wrote:
> > testert555 wrote:
> >> Can anyone recommend a catalytic converter for my 91 YJ? There is a
> >> huge difference is prices. I'm going to put it in myself and cannot
> >> weld. Cheaper the better.
>
> > Get it welded in. (in some states the cat must be welded on the
> > engine side, has to do with emissions laws)
>
> > A good local muffler shop should be able to do the job for $100 or
> > so.
>
> In what states does it have to be welded? Or is this more California
> craziness?
>
> --
> --
> --John
> to email, dial "usenet" and validate
> (was jclarke at eye bee em dot net)


I got my cat from http://www.quadratec.com

its clamped on and I passed inspection in NY

Re: 91 YJ catalytic converter?
 

On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
> DougW wrote:
> > testert555 wrote:
> >> Can anyone recommend a catalytic converter for my 91 YJ? There is a
> >> huge difference is prices. I'm going to put it in myself and cannot
> >> weld. Cheaper the better.
>
> > Get it welded in. (in some states the cat must be welded on the
> > engine side, has to do with emissions laws)
>
> > A good local muffler shop should be able to do the job for $100 or
> > so.
>
> In what states does it have to be welded? Or is this more California
> craziness?
>
> --
> --
> --John
> to email, dial "usenet" and validate
> (was jclarke at eye bee em dot net)


I got my cat from http://www.quadratec.com

its clamped on and I passed inspection in NY

Re: 91 YJ catalytic converter?
 

ufatbastehd wrote:
> On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
>> DougW wrote:
>>> testert555 wrote:
>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is a
>>>> huge difference is prices. I'm going to put it in myself and cannot
>>>> weld. Cheaper the better.
>>
>>> Get it welded in. (in some states the cat must be welded on the
>>> engine side, has to do with emissions laws)
>>
>>> A good local muffler shop should be able to do the job for $100 or
>>> so.
>>
>> In what states does it have to be welded? Or is this more California
>> craziness?

Could be. I checked the Oklahoma regs and they don't specify. Thought
the local muffler shop told me that when I was thinking of swapping to a
bolt-in unit.

> I got my cat from http://www.quadratec.com
>
> its clamped on and I passed inspection in NY

The only problem I have with clamps is on many installs the
pipe tends to rotate. A spot weld is usually all it takes
to keep things in place.

--
DougW

Re: 91 YJ catalytic converter?
 

ufatbastehd wrote:
> On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
>> DougW wrote:
>>> testert555 wrote:
>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is a
>>>> huge difference is prices. I'm going to put it in myself and cannot
>>>> weld. Cheaper the better.
>>
>>> Get it welded in. (in some states the cat must be welded on the
>>> engine side, has to do with emissions laws)
>>
>>> A good local muffler shop should be able to do the job for $100 or
>>> so.
>>
>> In what states does it have to be welded? Or is this more California
>> craziness?

Could be. I checked the Oklahoma regs and they don't specify. Thought
the local muffler shop told me that when I was thinking of swapping to a
bolt-in unit.

> I got my cat from http://www.quadratec.com
>
> its clamped on and I passed inspection in NY

The only problem I have with clamps is on many installs the
pipe tends to rotate. A spot weld is usually all it takes
to keep things in place.

--
DougW

Re: 91 YJ catalytic converter?
 

Earle Horton wrote:
> "DougW" <I.only.read.usenet@invalid.address> wrote in message
> news:9Nm3j.27459$aN3.24619@newsfe12.phx...
>
>>testert555 wrote:
>>
>>>Can anyone recommend a catalytic converter for my 91 YJ? There
>>>is a huge difference is prices. I'm going to put it in myself and
>>>cannot weld. Cheaper the better.
>>
>>Get it welded in. (in some states the cat must be welded on the
>>engine side, has to do with emissions laws)
>>
>>A good local muffler shop should be able to do the job for $100 or so.
>>
>
> I can understand the OP's concerns about economy, but a budget converter
> installed on the cheap isn't going to last long. Mine (OEM part) has
> been on there since the emissions recall of 1995, and is still going
> strong. I doubt that the "guts" are still in it, but that is what a
> free flow exhaust is for, to let the converter chunks out. Seriously,
> this isn't something you want to go cheap on.
>
> Cheers,
>
> Earle
>
>
>

It's not a safety item and it's not going to seriously effect
performance or fuel economy, as long as you can pass inspection I don't
see anything wrong with cheaping out on a converter.

That being said if you plan on keeping the vehicle for a long time then
spend the extra bucks for a good converter, it's worth it to not have to
mess with the exhaust system.

Jeff DeWitt

Re: 91 YJ catalytic converter?
 

Earle Horton wrote:
> "DougW" <I.only.read.usenet@invalid.address> wrote in message
> news:9Nm3j.27459$aN3.24619@newsfe12.phx...
>
>>testert555 wrote:
>>
>>>Can anyone recommend a catalytic converter for my 91 YJ? There
>>>is a huge difference is prices. I'm going to put it in myself and
>>>cannot weld. Cheaper the better.
>>
>>Get it welded in. (in some states the cat must be welded on the
>>engine side, has to do with emissions laws)
>>
>>A good local muffler shop should be able to do the job for $100 or so.
>>
>
> I can understand the OP's concerns about economy, but a budget converter
> installed on the cheap isn't going to last long. Mine (OEM part) has
> been on there since the emissions recall of 1995, and is still going
> strong. I doubt that the "guts" are still in it, but that is what a
> free flow exhaust is for, to let the converter chunks out. Seriously,
> this isn't something you want to go cheap on.
>
> Cheers,
>
> Earle
>
>
>

It's not a safety item and it's not going to seriously effect
performance or fuel economy, as long as you can pass inspection I don't
see anything wrong with cheaping out on a converter.

That being said if you plan on keeping the vehicle for a long time then
spend the extra bucks for a good converter, it's worth it to not have to
mess with the exhaust system.

Jeff DeWitt

Re: 91 YJ catalytic converter?
 

"Jeff DeWitt" <JeffDeWitt@nc.rr.com> wrote in message
news:474e4044$0$9630$4c368faf@roadrunner.com...
> Earle Horton wrote:
> > "DougW" <I.only.read.usenet@invalid.address> wrote in message
> > news:9Nm3j.27459$aN3.24619@newsfe12.phx...
> >
> >>testert555 wrote:
> >>
> >>>Can anyone recommend a catalytic converter for my 91 YJ? There
> >>>is a huge difference is prices. I'm going to put it in myself and
> >>>cannot weld. Cheaper the better.
> >>
> >>Get it welded in. (in some states the cat must be welded on the
> >>engine side, has to do with emissions laws)
> >>
> >>A good local muffler shop should be able to do the job for $100 or
> >>so.
> >>
> >
> > I can understand the OP's concerns about economy, but a budget
> > converter
> > installed on the cheap isn't going to last long. Mine (OEM part)
> > has
> > been on there since the emissions recall of 1995, and is still going
> > strong. I doubt that the "guts" are still in it, but that is what a
> > free flow exhaust is for, to let the converter chunks out.
> > Seriously, this isn't something you want to go cheap on.
> >
> > Cheers,
> >
> > Earle
> >
> >
> >
>
> It's not a safety item and it's not going to seriously effect
> performance or fuel economy, as long as you can pass inspection
> I don't see anything wrong with cheaping out on a converter.

Four letters Jeff, "r", "u", "s" and "t". It's amazing how fast cheap
metal tries to get back to the earth it came from. That said you don't
have to get ripped off by the stealership. Just get a quality brand
name component, and you won't be sorry.

>
> That being said if you plan on keeping the vehicle for a long time
> then spend the extra bucks for a good converter, it's worth it to
> not have to mess with the exhaust system.

Yep, exhaust system work sucks. I have known people to attack stubborn
exhaust bolts with a 44 Magnum.

Saludos,

Earle

>
> Jeff DeWitt





--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

"Jeff DeWitt" <JeffDeWitt@nc.rr.com> wrote in message
news:474e4044$0$9630$4c368faf@roadrunner.com...
> Earle Horton wrote:
> > "DougW" <I.only.read.usenet@invalid.address> wrote in message
> > news:9Nm3j.27459$aN3.24619@newsfe12.phx...
> >
> >>testert555 wrote:
> >>
> >>>Can anyone recommend a catalytic converter for my 91 YJ? There
> >>>is a huge difference is prices. I'm going to put it in myself and
> >>>cannot weld. Cheaper the better.
> >>
> >>Get it welded in. (in some states the cat must be welded on the
> >>engine side, has to do with emissions laws)
> >>
> >>A good local muffler shop should be able to do the job for $100 or
> >>so.
> >>
> >
> > I can understand the OP's concerns about economy, but a budget
> > converter
> > installed on the cheap isn't going to last long. Mine (OEM part)
> > has
> > been on there since the emissions recall of 1995, and is still going
> > strong. I doubt that the "guts" are still in it, but that is what a
> > free flow exhaust is for, to let the converter chunks out.
> > Seriously, this isn't something you want to go cheap on.
> >
> > Cheers,
> >
> > Earle
> >
> >
> >
>
> It's not a safety item and it's not going to seriously effect
> performance or fuel economy, as long as you can pass inspection
> I don't see anything wrong with cheaping out on a converter.

Four letters Jeff, "r", "u", "s" and "t". It's amazing how fast cheap
metal tries to get back to the earth it came from. That said you don't
have to get ripped off by the stealership. Just get a quality brand
name component, and you won't be sorry.

>
> That being said if you plan on keeping the vehicle for a long time
> then spend the extra bucks for a good converter, it's worth it to
> not have to mess with the exhaust system.

Yep, exhaust system work sucks. I have known people to attack stubborn
exhaust bolts with a 44 Magnum.

Saludos,

Earle

>
> Jeff DeWitt





--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

Earle Horton wrote:

> Yep, exhaust system work sucks. I have known people to attack stubborn
> exhaust bolts with a 44 Magnum.

That's why the make air hammers and sell muffler specific chisels for them
<g>. With that and a good angle grinder, I fear nothing!

Just for fun, have you ever tried to weld on one of those "aluminized" jobs?
Between that and some grades of stainless, clamps are hard to avoid.

--
Will Honea

--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

Earle Horton wrote:

> Yep, exhaust system work sucks. I have known people to attack stubborn
> exhaust bolts with a 44 Magnum.

That's why the make air hammers and sell muffler specific chisels for them
<g>. With that and a good angle grinder, I fear nothing!

Just for fun, have you ever tried to weld on one of those "aluminized" jobs?
Between that and some grades of stainless, clamps are hard to avoid.

--
Will Honea

--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

"DougW" <I.only.read.usenet@invalid.address> wrote in message
news:S8B3j.29316$L15.24393@newsfe08.phx...
> ufatbastehd wrote:
> > On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
> >> DougW wrote:
> >>> testert555 wrote:
> >>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
> >>>> a huge difference is prices. I'm going to put it in myself and
> >>>> cannot weld. Cheaper the better.
> >>
> >>> Get it welded in. (in some states the cat must be welded on the
> >>> engine side, has to do with emissions laws)
> >>
> >>> A good local muffler shop should be able to do the job for $100 or
> >>> so.
> >>
> >> In what states does it have to be welded? Or is this more
> >> California craziness?
>
> Could be. I checked the Oklahoma regs and they don't specify.
> Thought the local muffler shop told me that when I was thinking
> of swapping to a bolt-in unit.

Muffler shoppes will tell you anything, especially if they get to weld
the new unit in.

>
> > I got my cat from http://www.quadratec.com
> >
> > its clamped on and I passed inspection in NY
>
> The only problem I have with clamps is on many installs the
> pipe tends to rotate. A spot weld is usually all it takes
> to keep things in place.
>
If it is stubborn enough to need a spot weld, usually there is another
problem, such as mismatched pipe, a joint not inserted all the way or a
clamp the wrong size. The stainless steel exhaust components are pretty
slippery, but if you run the engine, retighten the clamps and repeat
usually even they will lock down eventually. I have one that I am
giving up on and will spot weld later today.

Cheers,

Earle



--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

"DougW" <I.only.read.usenet@invalid.address> wrote in message
news:S8B3j.29316$L15.24393@newsfe08.phx...
> ufatbastehd wrote:
> > On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
> >> DougW wrote:
> >>> testert555 wrote:
> >>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
> >>>> a huge difference is prices. I'm going to put it in myself and
> >>>> cannot weld. Cheaper the better.
> >>
> >>> Get it welded in. (in some states the cat must be welded on the
> >>> engine side, has to do with emissions laws)
> >>
> >>> A good local muffler shop should be able to do the job for $100 or
> >>> so.
> >>
> >> In what states does it have to be welded? Or is this more
> >> California craziness?
>
> Could be. I checked the Oklahoma regs and they don't specify.
> Thought the local muffler shop told me that when I was thinking
> of swapping to a bolt-in unit.

Muffler shoppes will tell you anything, especially if they get to weld
the new unit in.

>
> > I got my cat from http://www.quadratec.com
> >
> > its clamped on and I passed inspection in NY
>
> The only problem I have with clamps is on many installs the
> pipe tends to rotate. A spot weld is usually all it takes
> to keep things in place.
>
If it is stubborn enough to need a spot weld, usually there is another
problem, such as mismatched pipe, a joint not inserted all the way or a
clamp the wrong size. The stainless steel exhaust components are pretty
slippery, but if you run the engine, retighten the clamps and repeat
usually even they will lock down eventually. I have one that I am
giving up on and will spot weld later today.

Cheers,

Earle



--
Posted via a free Usenet account from http://www.teranews.com

Re: 91 YJ catalytic converter?
 

Earle Horton wrote:
> "DougW" wrote ...
>> ufatbastehd wrote:
>>> On Nov 28, 6:36 pm, "J. Clarke" wrote:
>>>> DougW wrote:
>>>>> testert555 wrote:
>>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
>>>>>> a huge difference is prices. I'm going to put it in myself and
>>>>>> cannot weld. Cheaper the better.
>>>>
>>>>> Get it welded in. (in some states the cat must be welded on the
>>>>> engine side, has to do with emissions laws)
>>>>
>>>>> A good local muffler shop should be able to do the job for $100 or
>>>>> so.
>>>>
>>>> In what states does it have to be welded? Or is this more
>>>> California craziness?
>>
>> Could be. I checked the Oklahoma regs and they don't specify.
>> Thought the local muffler shop told me that when I was thinking
>> of swapping to a bolt-in unit.
>
> Muffler shoppes will tell you anything, especially if they get to weld
> the new unit in.

True, but to weld on the bolt adapter would have been more money for the
shop.

>>
>>> I got my cat from http://www.quadratec.com
>>>
>>> its clamped on and I passed inspection in NY
>>
>> The only problem I have with clamps is on many installs the
>> pipe tends to rotate. A spot weld is usually all it takes
>> to keep things in place.
>>
> If it is stubborn enough to need a spot weld, usually there is another
> problem, such as mismatched pipe, a joint not inserted all the way or
> a clamp the wrong size. The stainless steel exhaust components are
> pretty slippery, but if you run the engine, retighten the clamps and
> repeat usually even they will lock down eventually. I have one that
> I am giving up on and will spot weld later today.

My problems always pop up when the exhaust hangers put torque on the
pipe. In the ZJ they are all off to one side so the whole assembly
tries to rotate.

--
DougW

Re: 91 YJ catalytic converter?
 

Earle Horton wrote:
> "DougW" wrote ...
>> ufatbastehd wrote:
>>> On Nov 28, 6:36 pm, "J. Clarke" wrote:
>>>> DougW wrote:
>>>>> testert555 wrote:
>>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
>>>>>> a huge difference is prices. I'm going to put it in myself and
>>>>>> cannot weld. Cheaper the better.
>>>>
>>>>> Get it welded in. (in some states the cat must be welded on the
>>>>> engine side, has to do with emissions laws)
>>>>
>>>>> A good local muffler shop should be able to do the job for $100 or
>>>>> so.
>>>>
>>>> In what states does it have to be welded? Or is this more
>>>> California craziness?
>>
>> Could be. I checked the Oklahoma regs and they don't specify.
>> Thought the local muffler shop told me that when I was thinking
>> of swapping to a bolt-in unit.
>
> Muffler shoppes will tell you anything, especially if they get to weld
> the new unit in.

True, but to weld on the bolt adapter would have been more money for the
shop.

>>
>>> I got my cat from http://www.quadratec.com
>>>
>>> its clamped on and I passed inspection in NY
>>
>> The only problem I have with clamps is on many installs the
>> pipe tends to rotate. A spot weld is usually all it takes
>> to keep things in place.
>>
> If it is stubborn enough to need a spot weld, usually there is another
> problem, such as mismatched pipe, a joint not inserted all the way or
> a clamp the wrong size. The stainless steel exhaust components are
> pretty slippery, but if you run the engine, retighten the clamps and
> repeat usually even they will lock down eventually. I have one that
> I am giving up on and will spot weld later today.

My problems always pop up when the exhaust hangers put torque on the
pipe. In the ZJ they are all off to one side so the whole assembly
tries to rotate.

--
DougW

Re: 91 YJ catalytic converter?
 

On Nov 29, 5:39 pm, "DougW" <I.only.read.use...@invalid.address>
wrote:
> Earle Horton wrote:
> > "DougW" wrote ...
> >> ufatbastehd wrote:
> >>> On Nov 28, 6:36 pm, "J. Clarke" wrote:
> >>>> DougW wrote:
> >>>>> testert555 wrote:
> >>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
> >>>>>> a huge difference is prices. I'm going to put it in myself and
> >>>>>> cannot weld. Cheaper the better.
>
> >>>>> Get it welded in. (in some states the cat must be welded on the
> >>>>> engine side, has to do with emissions laws)
>
> >>>>> A good local muffler shop should be able to do the job for $100 or
> >>>>> so.
>
> >>>> In what states does it have to be welded? Or is this more
> >>>> California craziness?
>
> >> Could be. I checked the Oklahoma regs and they don't specify.
> >> Thought the local muffler shop told me that when I was thinking
> >> of swapping to a bolt-in unit.
>
> > Muffler shoppes will tell you anything, especially if they get to weld
> > the new unit in.
>
> True, but to weld on the bolt adapter would have been more money for the
> shop.
>
>
>
> >>> I got my cat fromhttp://www.quadratec.com
>
> >>> its clamped on and I passed inspection in NY
>
> >> The only problem I have with clamps is on many installs the
> >> pipe tends to rotate. A spot weld is usually all it takes
> >> to keep things in place.
>
> > If it is stubborn enough to need a spot weld, usually there is another
> > problem, such as mismatched pipe, a joint not inserted all the way or
> > a clamp the wrong size. The stainless steel exhaust components are
> > pretty slippery, but if you run the engine, retighten the clamps and
> > repeat usually even they will lock down eventually. I have one that
> > I am giving up on and will spot weld later today.
>
> My problems always pop up when the exhaust hangers put torque on the
> pipe. In the ZJ they are all off to one side so the whole assembly
> tries to rotate.
>
> --
> DougW


Its been on since March I crawl under and check things out once in a
while and have not noticed anything yet. I used band type clamps. Not
sure if that would make a difference.
I'll keep an eye on mine.

Re: 91 YJ catalytic converter?
 

On Nov 29, 5:39 pm, "DougW" <I.only.read.use...@invalid.address>
wrote:
> Earle Horton wrote:
> > "DougW" wrote ...
> >> ufatbastehd wrote:
> >>> On Nov 28, 6:36 pm, "J. Clarke" wrote:
> >>>> DougW wrote:
> >>>>> testert555 wrote:
> >>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
> >>>>>> a huge difference is prices. I'm going to put it in myself and
> >>>>>> cannot weld. Cheaper the better.
>
> >>>>> Get it welded in. (in some states the cat must be welded on the
> >>>>> engine side, has to do with emissions laws)
>
> >>>>> A good local muffler shop should be able to do the job for $100 or
> >>>>> so.
>
> >>>> In what states does it have to be welded? Or is this more
> >>>> California craziness?
>
> >> Could be. I checked the Oklahoma regs and they don't specify.
> >> Thought the local muffler shop told me that when I was thinking
> >> of swapping to a bolt-in unit.
>
> > Muffler shoppes will tell you anything, especially if they get to weld
> > the new unit in.
>
> True, but to weld on the bolt adapter would have been more money for the
> shop.
>
>
>
> >>> I got my cat fromhttp://www.quadratec.com
>
> >>> its clamped on and I passed inspection in NY
>
> >> The only problem I have with clamps is on many installs the
> >> pipe tends to rotate. A spot weld is usually all it takes
> >> to keep things in place.
>
> > If it is stubborn enough to need a spot weld, usually there is another
> > problem, such as mismatched pipe, a joint not inserted all the way or
> > a clamp the wrong size. The stainless steel exhaust components are
> > pretty slippery, but if you run the engine, retighten the clamps and
> > repeat usually even they will lock down eventually. I have one that
> > I am giving up on and will spot weld later today.
>
> My problems always pop up when the exhaust hangers put torque on the
> pipe. In the ZJ they are all off to one side so the whole assembly
> tries to rotate.
>
> --
> DougW


Its been on since March I crawl under and check things out once in a
while and have not noticed anything yet. I used band type clamps. Not
sure if that would make a difference.
I'll keep an eye on mine.

Re: 91 YJ catalytic converter?
 

"Earle Horton" <123456@nospam.com> wrote in message
news:474ed81a$0$26010$88260bb3@free.teranews.com.. .
> "DougW" <I.only.read.usenet@invalid.address> wrote in message
> news:S8B3j.29316$L15.24393@newsfe08.phx...
>> ufatbastehd wrote:
>> > On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
>> >> DougW wrote:
>> >>> testert555 wrote:
>> >>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
>> >>>> a huge difference is prices. I'm going to put it in myself and
>> >>>> cannot weld. Cheaper the better.
>> >>
>> >>> Get it welded in. (in some states the cat must be welded on the
>> >>> engine side, has to do with emissions laws)
>> >>
>> >>> A good local muffler shop should be able to do the job for $100 or
>> >>> so.
>> >>
>> >> In what states does it have to be welded? Or is this more
>> >> California craziness?
>>
>> Could be. I checked the Oklahoma regs and they don't specify.
>> Thought the local muffler shop told me that when I was thinking
>> of swapping to a bolt-in unit.
>
> Muffler shoppes will tell you anything, especially if they get to weld
> the new unit in.
>
>>
>> > I got my cat from http://www.quadratec.com
>> >
>> > its clamped on and I passed inspection in NY
>>
>> The only problem I have with clamps is on many installs the
>> pipe tends to rotate. A spot weld is usually all it takes
>> to keep things in place.
>>
> If it is stubborn enough to need a spot weld, usually there is another
> problem, such as mismatched pipe, a joint not inserted all the way or a
> clamp the wrong size. The stainless steel exhaust components are pretty
> slippery, but if you run the engine, retighten the clamps and repeat
> usually even they will lock down eventually. I have one that I am
> giving up on and will spot weld later today.
>
> Cheers,
>
> Earle
>

I've had that problem. I used a muffler clamp to install the muffler and
cat and have been retighting the clamps but the buggers have still rotated
about 45 degrees on me. Gonna loosen the clamps and spot weld the buggers
in place and then retighten the clamps.

Re: 91 YJ catalytic converter?
 

"Earle Horton" <123456@nospam.com> wrote in message
news:474ed81a$0$26010$88260bb3@free.teranews.com.. .
> "DougW" <I.only.read.usenet@invalid.address> wrote in message
> news:S8B3j.29316$L15.24393@newsfe08.phx...
>> ufatbastehd wrote:
>> > On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
>> >> DougW wrote:
>> >>> testert555 wrote:
>> >>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
>> >>>> a huge difference is prices. I'm going to put it in myself and
>> >>>> cannot weld. Cheaper the better.
>> >>
>> >>> Get it welded in. (in some states the cat must be welded on the
>> >>> engine side, has to do with emissions laws)
>> >>
>> >>> A good local muffler shop should be able to do the job for $100 or
>> >>> so.
>> >>
>> >> In what states does it have to be welded? Or is this more
>> >> California craziness?
>>
>> Could be. I checked the Oklahoma regs and they don't specify.
>> Thought the local muffler shop told me that when I was thinking
>> of swapping to a bolt-in unit.
>
> Muffler shoppes will tell you anything, especially if they get to weld
> the new unit in.
>
>>
>> > I got my cat from http://www.quadratec.com
>> >
>> > its clamped on and I passed inspection in NY
>>
>> The only problem I have with clamps is on many installs the
>> pipe tends to rotate. A spot weld is usually all it takes
>> to keep things in place.
>>
> If it is stubborn enough to need a spot weld, usually there is another
> problem, such as mismatched pipe, a joint not inserted all the way or a
> clamp the wrong size. The stainless steel exhaust components are pretty
> slippery, but if you run the engine, retighten the clamps and repeat
> usually even they will lock down eventually. I have one that I am
> giving up on and will spot weld later today.
>
> Cheers,
>
> Earle
>

I've had that problem. I used a muffler clamp to install the muffler and
cat and have been retighting the clamps but the buggers have still rotated
about 45 degrees on me. Gonna loosen the clamps and spot weld the buggers
in place and then retighten the clamps.

Re: 91 YJ catalytic converter?
 

DougW wrote:
> ufatbastehd wrote:
>> On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
>>> DougW wrote:
>>>> testert555 wrote:
>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is a
>>>>> huge difference is prices. I'm going to put it in myself and cannot
>>>>> weld. Cheaper the better.
>>>> Get it welded in. (in some states the cat must be welded on the
>>>> engine side, has to do with emissions laws)
>>>> A good local muffler shop should be able to do the job for $100 or
>>>> so.
>>> In what states does it have to be welded? Or is this more California
>>> craziness?
>
> Could be. I checked the Oklahoma regs and they don't specify. Thought
> the local muffler shop told me that when I was thinking of swapping to a
> bolt-in unit.
>
>> I got my cat from http://www.quadratec.com
>>
>> its clamped on and I passed inspection in NY
>
> The only problem I have with clamps is on many installs the
> pipe tends to rotate. A spot weld is usually all it takes
> to keep things in place.
>

Local specialty shops tend to know the regs pretty well and it is
usually not in their interest to overly lie if they have competitors.
There are some really good aftermarket cats available, although as
someone noted, some states ban universal fit styles more for political
than technical reasons.

Yeah, even the expensive Banks sleeve style clamps can be problems.
Somehow I kept managing to loosen and misalign the connect to my cat
back just enough to leak a bit until the service manager had a tech just
put a couple tack welds on it. The stainless was not a problem, and it
hasnt loosened in years...sadly that dealer is defunct and havent found
another good one in two different states yet.

Re: 91 YJ catalytic converter?
 

DougW wrote:
> ufatbastehd wrote:
>> On Nov 28, 6:36 pm, "J. Clarke" <jclarke.use...@cox.net> wrote:
>>> DougW wrote:
>>>> testert555 wrote:
>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is a
>>>>> huge difference is prices. I'm going to put it in myself and cannot
>>>>> weld. Cheaper the better.
>>>> Get it welded in. (in some states the cat must be welded on the
>>>> engine side, has to do with emissions laws)
>>>> A good local muffler shop should be able to do the job for $100 or
>>>> so.
>>> In what states does it have to be welded? Or is this more California
>>> craziness?
>
> Could be. I checked the Oklahoma regs and they don't specify. Thought
> the local muffler shop told me that when I was thinking of swapping to a
> bolt-in unit.
>
>> I got my cat from http://www.quadratec.com
>>
>> its clamped on and I passed inspection in NY
>
> The only problem I have with clamps is on many installs the
> pipe tends to rotate. A spot weld is usually all it takes
> to keep things in place.
>

Local specialty shops tend to know the regs pretty well and it is
usually not in their interest to overly lie if they have competitors.
There are some really good aftermarket cats available, although as
someone noted, some states ban universal fit styles more for political
than technical reasons.

Yeah, even the expensive Banks sleeve style clamps can be problems.
Somehow I kept managing to loosen and misalign the connect to my cat
back just enough to leak a bit until the service manager had a tech just
put a couple tack welds on it. The stainless was not a problem, and it
hasnt loosened in years...sadly that dealer is defunct and havent found
another good one in two different states yet.

Re: 91 YJ catalytic converter?
 

DougW wrote:
> Earle Horton wrote:
>> "DougW" wrote ...
>>> ufatbastehd wrote:
>>>> On Nov 28, 6:36 pm, "J. Clarke" wrote:
>>>>> DougW wrote:
>>>>>> testert555 wrote:
>>>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
>>>>>>> a huge difference is prices. I'm going to put it in myself and
>>>>>>> cannot weld. Cheaper the better.
>>>>>> Get it welded in. (in some states the cat must be welded on the
>>>>>> engine side, has to do with emissions laws)
>>>>>> A good local muffler shop should be able to do the job for $100 or
>>>>>> so.
>>>>> In what states does it have to be welded? Or is this more
>>>>> California craziness?
>>> Could be. I checked the Oklahoma regs and they don't specify.
>>> Thought the local muffler shop told me that when I was thinking
>>> of swapping to a bolt-in unit.
>> Muffler shoppes will tell you anything, especially if they get to weld
>> the new unit in.
>
> True, but to weld on the bolt adapter would have been more money for the
> shop.
>
>>>> I got my cat from http://www.quadratec.com
>>>>
>>>> its clamped on and I passed inspection in NY
>>> The only problem I have with clamps is on many installs the
>>> pipe tends to rotate. A spot weld is usually all it takes
>>> to keep things in place.
>>>
>> If it is stubborn enough to need a spot weld, usually there is another
>> problem, such as mismatched pipe, a joint not inserted all the way or
>> a clamp the wrong size. The stainless steel exhaust components are
>> pretty slippery, but if you run the engine, retighten the clamps and
>> repeat usually even they will lock down eventually. I have one that
>> I am giving up on and will spot weld later today.
>
> My problems always pop up when the exhaust hangers put torque on the
> pipe. In the ZJ they are all off to one side so the whole assembly
> tries to rotate.
>
Yeah, then those assembly notches have the murphys law of always
aligning to create a tiny leak.

Then that rear cheap rubber exhaust hanger gets 3 minutes old and tries
to droop your cat back until you get ticked off and create your own with
a bit of neoprene clamped inside the standard cheapass mopar rubber
hanger.

Re: 91 YJ catalytic converter?
 

DougW wrote:
> Earle Horton wrote:
>> "DougW" wrote ...
>>> ufatbastehd wrote:
>>>> On Nov 28, 6:36 pm, "J. Clarke" wrote:
>>>>> DougW wrote:
>>>>>> testert555 wrote:
>>>>>>> Can anyone recommend a catalytic converter for my 91 YJ? There is
>>>>>>> a huge difference is prices. I'm going to put it in myself and
>>>>>>> cannot weld. Cheaper the better.
>>>>>> Get it welded in. (in some states the cat must be welded on the
>>>>>> engine side, has to do with emissions laws)
>>>>>> A good local muffler shop should be able to do the job for $100 or
>>>>>> so.
>>>>> In what states does it have to be welded? Or is this more
>>>>> California craziness?
>>> Could be. I checked the Oklahoma regs and they don't specify.
>>> Thought the local muffler shop told me that when I was thinking
>>> of swapping to a bolt-in unit.
>> Muffler shoppes will tell you anything, especially if they get to weld
>> the new unit in.
>
> True, but to weld on the bolt adapter would have been more money for the
> shop.
>
>>>> I got my cat from http://www.quadratec.com
>>>>
>>>> its clamped on and I passed inspection in NY
>>> The only problem I have with clamps is on many installs the
>>> pipe tends to rotate. A spot weld is usually all it takes
>>> to keep things in place.
>>>
>> If it is stubborn enough to need a spot weld, usually there is another
>> problem, such as mismatched pipe, a joint not inserted all the way or
>> a clamp the wrong size. The stainless steel exhaust components are
>> pretty slippery, but if you run the engine, retighten the clamps and
>> repeat usually even they will lock down eventually. I have one that
>> I am giving up on and will spot weld later today.
>
> My problems always pop up when the exhaust hangers put torque on the
> pipe. In the ZJ they are all off to one side so the whole assembly
> tries to rotate.
>
Yeah, then those assembly notches have the murphys law of always
aligning to create a tiny leak.

Then that rear cheap rubber exhaust hanger gets 3 minutes old and tries
to droop your cat back until you get ticked off and create your own with
a bit of neoprene clamped inside the standard cheapass mopar rubber
hanger.

Re: 91 YJ catalytic converter?
 

Lon Stowell wrote:

> Then that rear cheap rubber exhaust hanger gets 3 minutes old and
> tries to droop your cat back until you get ticked off and create your
> own with a bit of neoprene clamped inside the standard cheapass mopar
> rubber hanger.

Tell me about it. I had to replace the rubber hanger in the ZJ. They
don't make the original part but they have a "newer better one". That
means it doesn't fit. Well, it does if you take a sharp knife to
the darn thing and use a drill to open up the holes a bit more.

--
DougW

Re: 91 YJ catalytic converter?
 

Lon Stowell wrote:

> Then that rear cheap rubber exhaust hanger gets 3 minutes old and
> tries to droop your cat back until you get ticked off and create your
> own with a bit of neoprene clamped inside the standard cheapass mopar
> rubber hanger.

Tell me about it. I had to replace the rubber hanger in the ZJ. They
don't make the original part but they have a "newer better one". That
means it doesn't fit. Well, it does if you take a sharp knife to
the darn thing and use a drill to open up the holes a bit more.

--
DougW

Re: 91 YJ catalytic converter?
 

DougW wrote:
> Lon Stowell wrote:
>
>> Then that rear cheap rubber exhaust hanger gets 3 minutes old and
>> tries to droop your cat back until you get ticked off and create your
>> own with a bit of neoprene clamped inside the standard cheapass mopar
>> rubber hanger.
>
> Tell me about it. I had to replace the rubber hanger in the ZJ. They
> don't make the original part but they have a "newer better one". That
> means it doesn't fit. Well, it does if you take a sharp knife to
> the darn thing and use a drill to open up the holes a bit more.
>
The 95 has a glorified oversized rubber band that the hanger pin fits
in. That all fit perfectly but kept allowing the aftermarket catback
whack the rear axle on heavy bumps. There is a cavity at the bottom of
the rubber hanger where a cut neoprene suspension bushing fits like a
charm, and stays surprisingly well in place with just contact cement.

Re: 91 YJ catalytic converter?
 

DougW wrote:
> Lon Stowell wrote:
>
>> Then that rear cheap rubber exhaust hanger gets 3 minutes old and
>> tries to droop your cat back until you get ticked off and create your
>> own with a bit of neoprene clamped inside the standard cheapass mopar
>> rubber hanger.
>
> Tell me about it. I had to replace the rubber hanger in the ZJ. They
> don't make the original part but they have a "newer better one". That
> means it doesn't fit. Well, it does if you take a sharp knife to
> the darn thing and use a drill to open up the holes a bit more.
>
The 95 has a glorified oversized rubber band that the hanger pin fits
in. That all fit perfectly but kept allowing the aftermarket catback
whack the rear axle on heavy bumps. There is a cavity at the bottom of
the rubber hanger where a cut neoprene suspension bushing fits like a
charm, and stays surprisingly well in place with just contact cement.

Re: 91 YJ catalytic converter?
 

Lon Stowell wrote:
> DougW wrote:
>> Lon Stowell wrote:
>>
>>> Then that rear cheap rubber exhaust hanger gets 3 minutes old and
>>> tries to droop your cat back until you get ticked off and create
>>> your own with a bit of neoprene clamped inside the standard
>>> cheapass mopar rubber hanger.
>>
>> Tell me about it. I had to replace the rubber hanger in the ZJ. They
>> don't make the original part but they have a "newer better one". That
>> means it doesn't fit. Well, it does if you take a sharp knife to
>> the darn thing and use a drill to open up the holes a bit more.
>>
> The 95 has a glorified oversized rubber band that the hanger pin fits
> in. That all fit perfectly but kept allowing the aftermarket catback
> whack the rear axle on heavy bumps. There is a cavity at the bottom
> of the rubber hanger where a cut neoprene suspension bushing fits
> like a charm, and stays surprisingly well in place with just contact
> cement.

Got the same metal surround, think I'm going to do that next time.

--
DougW

Re: 91 YJ catalytic converter?
 

Lon Stowell wrote:
> DougW wrote:
>> Lon Stowell wrote:
>>
>>> Then that rear cheap rubber exhaust hanger gets 3 minutes old and
>>> tries to droop your cat back until you get ticked off and create
>>> your own with a bit of neoprene clamped inside the standard
>>> cheapass mopar rubber hanger.
>>
>> Tell me about it. I had to replace the rubber hanger in the ZJ. They
>> don't make the original part but they have a "newer better one". That
>> means it doesn't fit. Well, it does if you take a sharp knife to
>> the darn thing and use a drill to open up the holes a bit more.
>>
> The 95 has a glorified oversized rubber band that the hanger pin fits
> in. That all fit perfectly but kept allowing the aftermarket catback
> whack the rear axle on heavy bumps. There is a cavity at the bottom
> of the rubber hanger where a cut neoprene suspension bushing fits
> like a charm, and stays surprisingly well in place with just contact
> cement.

Got the same metal surround, think I'm going to do that next time.

--
DougW