1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

Well after arguing myself blue with a 'mechanic' that says no way a Jeep
with a carb can pass emissions in California if you disable the
emissions computer or do a 'Nutter' on it after the first guy I think to
put the directions online:

http://www.off-road.com/jeep/jnutter1.htm

It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
mph extra per gear.

The mechanic's reasoning is the NOx will blow out or the timing will
have to be too far back to pass.

The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
2525 test I was told.

I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
I
disabled the computer in.

Specs.

- 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
- 'No' Catalytic converter (not needed in Canada)
- 2" straight pipe with a high flow Dynomax turbo muffler.
- No computer, 'Nuttered'
- Base timing set at 9 deg BTDC with the vacuum line off like the book
says for a non computer engine. (If I go with the higher RPM setting of
full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
base and I find that too boggy for power so I even have room to play
there.)
- 92 octane ESSO gas.
- Ported on the timing advance
- Stock BBD carb set to 'best lean idle' and always a fresh $20.00
rebuild kit for the test.
- Accel Supercoil for hot spark with Champion plugs and OEM wires.
- Strong pull up to 4400 rpm, then falls flat.
- 11L/100km or something like 23 US mpg highway

On the ASM 2525 test I got 589 NOx!!!!!.

And 16 ppm HC

And 0.11% CO

Photo of the papers here:
http://www.imagestation.com/album/pi...?id=4290636987

And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
paperwork.

Not a fluke, I killed the computer in 2000, this 2003 one was just the
only year they actually put the NOx reading on because I don't have to
pass that.

And the best part is I have passed the last test it ever will need! It
becomes too old before the next one.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42604598.8FE80D28@sympatico.ca...
> Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> with a carb can pass emissions in California if you disable the
> emissions computer or do a 'Nutter' on it after the first guy I think to
> put the directions online:
>

The problem is, in Calif., the system has to physically be installed. I
don't know what the bypass entails, but if stuff is removed, then the
vehicle fails because of the visual inspection that comes before the sniff
test.

There is considerable irony here, the bypass can conceivably result in
better performance with the sniffer, but because the system hasn't got all
of the components, it automatically fails. The vehicle can spit out better
numbers, but if the parts are missing, it will fail. Sad - even stupid - but
true.





> http://www.off-road.com/jeep/jnutter1.htm
>
> It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> mph extra per gear.
>
> The mechanic's reasoning is the NOx will blow out or the timing will
> have to be too far back to pass.
>
> The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> 2525 test I was told.
>
> I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> I
> disabled the computer in.
>
> Specs.
>
> - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> - 'No' Catalytic converter (not needed in Canada)
> - 2" straight pipe with a high flow Dynomax turbo muffler.
> - No computer, 'Nuttered'
> - Base timing set at 9 deg BTDC with the vacuum line off like the book
> says for a non computer engine. (If I go with the higher RPM setting of
> full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> base and I find that too boggy for power so I even have room to play
> there.)
> - 92 octane ESSO gas.
> - Ported on the timing advance
> - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> rebuild kit for the test.
> - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> - Strong pull up to 4400 rpm, then falls flat.
> - 11L/100km or something like 23 US mpg highway
>
> On the ASM 2525 test I got 589 NOx!!!!!.
>
> And 16 ppm HC
>
> And 0.11% CO
>
> Photo of the papers here:
> http://www.imagestation.com/album/pi...?id=4290636987
>
> And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> paperwork.
>
> Not a fluke, I killed the computer in 2000, this 2003 one was just the
> only year they actually put the NOx reading on because I don't have to
> pass that.
>
> And the best part is I have passed the last test it ever will need! It
> becomes too old before the next one.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42604598.8FE80D28@sympatico.ca...
> Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> with a carb can pass emissions in California if you disable the
> emissions computer or do a 'Nutter' on it after the first guy I think to
> put the directions online:
>

The problem is, in Calif., the system has to physically be installed. I
don't know what the bypass entails, but if stuff is removed, then the
vehicle fails because of the visual inspection that comes before the sniff
test.

There is considerable irony here, the bypass can conceivably result in
better performance with the sniffer, but because the system hasn't got all
of the components, it automatically fails. The vehicle can spit out better
numbers, but if the parts are missing, it will fail. Sad - even stupid - but
true.





> http://www.off-road.com/jeep/jnutter1.htm
>
> It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> mph extra per gear.
>
> The mechanic's reasoning is the NOx will blow out or the timing will
> have to be too far back to pass.
>
> The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> 2525 test I was told.
>
> I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> I
> disabled the computer in.
>
> Specs.
>
> - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> - 'No' Catalytic converter (not needed in Canada)
> - 2" straight pipe with a high flow Dynomax turbo muffler.
> - No computer, 'Nuttered'
> - Base timing set at 9 deg BTDC with the vacuum line off like the book
> says for a non computer engine. (If I go with the higher RPM setting of
> full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> base and I find that too boggy for power so I even have room to play
> there.)
> - 92 octane ESSO gas.
> - Ported on the timing advance
> - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> rebuild kit for the test.
> - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> - Strong pull up to 4400 rpm, then falls flat.
> - 11L/100km or something like 23 US mpg highway
>
> On the ASM 2525 test I got 589 NOx!!!!!.
>
> And 16 ppm HC
>
> And 0.11% CO
>
> Photo of the papers here:
> http://www.imagestation.com/album/pi...?id=4290636987
>
> And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> paperwork.
>
> Not a fluke, I killed the computer in 2000, this 2003 one was just the
> only year they actually put the NOx reading on because I don't have to
> pass that.
>
> And the best part is I have passed the last test it ever will need! It
> becomes too old before the next one.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42604598.8FE80D28@sympatico.ca...
> Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> with a carb can pass emissions in California if you disable the
> emissions computer or do a 'Nutter' on it after the first guy I think to
> put the directions online:
>

The problem is, in Calif., the system has to physically be installed. I
don't know what the bypass entails, but if stuff is removed, then the
vehicle fails because of the visual inspection that comes before the sniff
test.

There is considerable irony here, the bypass can conceivably result in
better performance with the sniffer, but because the system hasn't got all
of the components, it automatically fails. The vehicle can spit out better
numbers, but if the parts are missing, it will fail. Sad - even stupid - but
true.





> http://www.off-road.com/jeep/jnutter1.htm
>
> It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> mph extra per gear.
>
> The mechanic's reasoning is the NOx will blow out or the timing will
> have to be too far back to pass.
>
> The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> 2525 test I was told.
>
> I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> I
> disabled the computer in.
>
> Specs.
>
> - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> - 'No' Catalytic converter (not needed in Canada)
> - 2" straight pipe with a high flow Dynomax turbo muffler.
> - No computer, 'Nuttered'
> - Base timing set at 9 deg BTDC with the vacuum line off like the book
> says for a non computer engine. (If I go with the higher RPM setting of
> full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> base and I find that too boggy for power so I even have room to play
> there.)
> - 92 octane ESSO gas.
> - Ported on the timing advance
> - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> rebuild kit for the test.
> - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> - Strong pull up to 4400 rpm, then falls flat.
> - 11L/100km or something like 23 US mpg highway
>
> On the ASM 2525 test I got 589 NOx!!!!!.
>
> And 16 ppm HC
>
> And 0.11% CO
>
> Photo of the papers here:
> http://www.imagestation.com/album/pi...?id=4290636987
>
> And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> paperwork.
>
> Not a fluke, I killed the computer in 2000, this 2003 one was just the
> only year they actually put the NOx reading on because I don't have to
> pass that.
>
> And the best part is I have passed the last test it ever will need! It
> becomes too old before the next one.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42604598.8FE80D28@sympatico.ca...
> Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> with a carb can pass emissions in California if you disable the
> emissions computer or do a 'Nutter' on it after the first guy I think to
> put the directions online:
>

The problem is, in Calif., the system has to physically be installed. I
don't know what the bypass entails, but if stuff is removed, then the
vehicle fails because of the visual inspection that comes before the sniff
test.

There is considerable irony here, the bypass can conceivably result in
better performance with the sniffer, but because the system hasn't got all
of the components, it automatically fails. The vehicle can spit out better
numbers, but if the parts are missing, it will fail. Sad - even stupid - but
true.





> http://www.off-road.com/jeep/jnutter1.htm
>
> It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> mph extra per gear.
>
> The mechanic's reasoning is the NOx will blow out or the timing will
> have to be too far back to pass.
>
> The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> 2525 test I was told.
>
> I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> I
> disabled the computer in.
>
> Specs.
>
> - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> - 'No' Catalytic converter (not needed in Canada)
> - 2" straight pipe with a high flow Dynomax turbo muffler.
> - No computer, 'Nuttered'
> - Base timing set at 9 deg BTDC with the vacuum line off like the book
> says for a non computer engine. (If I go with the higher RPM setting of
> full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> base and I find that too boggy for power so I even have room to play
> there.)
> - 92 octane ESSO gas.
> - Ported on the timing advance
> - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> rebuild kit for the test.
> - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> - Strong pull up to 4400 rpm, then falls flat.
> - 11L/100km or something like 23 US mpg highway
>
> On the ASM 2525 test I got 589 NOx!!!!!.
>
> And 16 ppm HC
>
> And 0.11% CO
>
> Photo of the papers here:
> http://www.imagestation.com/album/pi...?id=4290636987
>
> And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> paperwork.
>
> Not a fluke, I killed the computer in 2000, this 2003 one was just the
> only year they actually put the NOx reading on because I don't have to
> pass that.
>
> And the best part is I have passed the last test it ever will need! It
> becomes too old before the next one.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

All the junk can be left in place. It only requires 2 new wires from
the ignition module to the distributor that fit inside the loom.

You then just set the carb mix and timing. That's it!

If you have to put it back, it is only 2 wires to change.....

Mike

Jeff Strickland wrote:
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:42604598.8FE80D28@sympatico.ca...
> > Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> > with a carb can pass emissions in California if you disable the
> > emissions computer or do a 'Nutter' on it after the first guy I think to
> > put the directions online:
> >
>
> The problem is, in Calif., the system has to physically be installed. I
> don't know what the bypass entails, but if stuff is removed, then the
> vehicle fails because of the visual inspection that comes before the sniff
> test.
>
> There is considerable irony here, the bypass can conceivably result in
> better performance with the sniffer, but because the system hasn't got all
> of the components, it automatically fails. The vehicle can spit out better
> numbers, but if the parts are missing, it will fail. Sad - even stupid - but
> true.
>
> > http://www.off-road.com/jeep/jnutter1.htm
> >
> > It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> > mph extra per gear.
> >
> > The mechanic's reasoning is the NOx will blow out or the timing will
> > have to be too far back to pass.
> >
> > The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> > 2525 test I was told.
> >
> > I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> > I
> > disabled the computer in.
> >
> > Specs.
> >
> > - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> > - 'No' Catalytic converter (not needed in Canada)
> > - 2" straight pipe with a high flow Dynomax turbo muffler.
> > - No computer, 'Nuttered'
> > - Base timing set at 9 deg BTDC with the vacuum line off like the book
> > says for a non computer engine. (If I go with the higher RPM setting of
> > full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> > base and I find that too boggy for power so I even have room to play
> > there.)
> > - 92 octane ESSO gas.
> > - Ported on the timing advance
> > - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> > rebuild kit for the test.
> > - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> > - Strong pull up to 4400 rpm, then falls flat.
> > - 11L/100km or something like 23 US mpg highway
> >
> > On the ASM 2525 test I got 589 NOx!!!!!.
> >
> > And 16 ppm HC
> >
> > And 0.11% CO
> >
> > Photo of the papers here:
> > http://www.imagestation.com/album/pi...?id=4290636987
> >
> > And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> > paperwork.
> >
> > Not a fluke, I killed the computer in 2000, this 2003 one was just the
> > only year they actually put the NOx reading on because I don't have to
> > pass that.
> >
> > And the best part is I have passed the last test it ever will need! It
> > becomes too old before the next one.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

All the junk can be left in place. It only requires 2 new wires from
the ignition module to the distributor that fit inside the loom.

You then just set the carb mix and timing. That's it!

If you have to put it back, it is only 2 wires to change.....

Mike

Jeff Strickland wrote:
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:42604598.8FE80D28@sympatico.ca...
> > Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> > with a carb can pass emissions in California if you disable the
> > emissions computer or do a 'Nutter' on it after the first guy I think to
> > put the directions online:
> >
>
> The problem is, in Calif., the system has to physically be installed. I
> don't know what the bypass entails, but if stuff is removed, then the
> vehicle fails because of the visual inspection that comes before the sniff
> test.
>
> There is considerable irony here, the bypass can conceivably result in
> better performance with the sniffer, but because the system hasn't got all
> of the components, it automatically fails. The vehicle can spit out better
> numbers, but if the parts are missing, it will fail. Sad - even stupid - but
> true.
>
> > http://www.off-road.com/jeep/jnutter1.htm
> >
> > It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> > mph extra per gear.
> >
> > The mechanic's reasoning is the NOx will blow out or the timing will
> > have to be too far back to pass.
> >
> > The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> > 2525 test I was told.
> >
> > I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> > I
> > disabled the computer in.
> >
> > Specs.
> >
> > - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> > - 'No' Catalytic converter (not needed in Canada)
> > - 2" straight pipe with a high flow Dynomax turbo muffler.
> > - No computer, 'Nuttered'
> > - Base timing set at 9 deg BTDC with the vacuum line off like the book
> > says for a non computer engine. (If I go with the higher RPM setting of
> > full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> > base and I find that too boggy for power so I even have room to play
> > there.)
> > - 92 octane ESSO gas.
> > - Ported on the timing advance
> > - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> > rebuild kit for the test.
> > - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> > - Strong pull up to 4400 rpm, then falls flat.
> > - 11L/100km or something like 23 US mpg highway
> >
> > On the ASM 2525 test I got 589 NOx!!!!!.
> >
> > And 16 ppm HC
> >
> > And 0.11% CO
> >
> > Photo of the papers here:
> > http://www.imagestation.com/album/pi...?id=4290636987
> >
> > And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> > paperwork.
> >
> > Not a fluke, I killed the computer in 2000, this 2003 one was just the
> > only year they actually put the NOx reading on because I don't have to
> > pass that.
> >
> > And the best part is I have passed the last test it ever will need! It
> > becomes too old before the next one.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

All the junk can be left in place. It only requires 2 new wires from
the ignition module to the distributor that fit inside the loom.

You then just set the carb mix and timing. That's it!

If you have to put it back, it is only 2 wires to change.....

Mike

Jeff Strickland wrote:
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:42604598.8FE80D28@sympatico.ca...
> > Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> > with a carb can pass emissions in California if you disable the
> > emissions computer or do a 'Nutter' on it after the first guy I think to
> > put the directions online:
> >
>
> The problem is, in Calif., the system has to physically be installed. I
> don't know what the bypass entails, but if stuff is removed, then the
> vehicle fails because of the visual inspection that comes before the sniff
> test.
>
> There is considerable irony here, the bypass can conceivably result in
> better performance with the sniffer, but because the system hasn't got all
> of the components, it automatically fails. The vehicle can spit out better
> numbers, but if the parts are missing, it will fail. Sad - even stupid - but
> true.
>
> > http://www.off-road.com/jeep/jnutter1.htm
> >
> > It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> > mph extra per gear.
> >
> > The mechanic's reasoning is the NOx will blow out or the timing will
> > have to be too far back to pass.
> >
> > The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> > 2525 test I was told.
> >
> > I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> > I
> > disabled the computer in.
> >
> > Specs.
> >
> > - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> > - 'No' Catalytic converter (not needed in Canada)
> > - 2" straight pipe with a high flow Dynomax turbo muffler.
> > - No computer, 'Nuttered'
> > - Base timing set at 9 deg BTDC with the vacuum line off like the book
> > says for a non computer engine. (If I go with the higher RPM setting of
> > full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> > base and I find that too boggy for power so I even have room to play
> > there.)
> > - 92 octane ESSO gas.
> > - Ported on the timing advance
> > - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> > rebuild kit for the test.
> > - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> > - Strong pull up to 4400 rpm, then falls flat.
> > - 11L/100km or something like 23 US mpg highway
> >
> > On the ASM 2525 test I got 589 NOx!!!!!.
> >
> > And 16 ppm HC
> >
> > And 0.11% CO
> >
> > Photo of the papers here:
> > http://www.imagestation.com/album/pi...?id=4290636987
> >
> > And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> > paperwork.
> >
> > Not a fluke, I killed the computer in 2000, this 2003 one was just the
> > only year they actually put the NOx reading on because I don't have to
> > pass that.
> >
> > And the best part is I have passed the last test it ever will need! It
> > becomes too old before the next one.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

All the junk can be left in place. It only requires 2 new wires from
the ignition module to the distributor that fit inside the loom.

You then just set the carb mix and timing. That's it!

If you have to put it back, it is only 2 wires to change.....

Mike

Jeff Strickland wrote:
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:42604598.8FE80D28@sympatico.ca...
> > Well after arguing myself blue with a 'mechanic' that says no way a Jeep
> > with a carb can pass emissions in California if you disable the
> > emissions computer or do a 'Nutter' on it after the first guy I think to
> > put the directions online:
> >
>
> The problem is, in Calif., the system has to physically be installed. I
> don't know what the bypass entails, but if stuff is removed, then the
> vehicle fails because of the visual inspection that comes before the sniff
> test.
>
> There is considerable irony here, the bypass can conceivably result in
> better performance with the sniffer, but because the system hasn't got all
> of the components, it automatically fails. The vehicle can spit out better
> numbers, but if the parts are missing, it will fail. Sad - even stupid - but
> true.
>
> > http://www.off-road.com/jeep/jnutter1.htm
> >
> > It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
> > mph extra per gear.
> >
> > The mechanic's reasoning is the NOx will blow out or the timing will
> > have to be too far back to pass.
> >
> > The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
> > 2525 test I was told.
> >
> > I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
> > I
> > disabled the computer in.
> >
> > Specs.
> >
> > - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
> > - 'No' Catalytic converter (not needed in Canada)
> > - 2" straight pipe with a high flow Dynomax turbo muffler.
> > - No computer, 'Nuttered'
> > - Base timing set at 9 deg BTDC with the vacuum line off like the book
> > says for a non computer engine. (If I go with the higher RPM setting of
> > full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
> > base and I find that too boggy for power so I even have room to play
> > there.)
> > - 92 octane ESSO gas.
> > - Ported on the timing advance
> > - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
> > rebuild kit for the test.
> > - Accel Supercoil for hot spark with Champion plugs and OEM wires.
> > - Strong pull up to 4400 rpm, then falls flat.
> > - 11L/100km or something like 23 US mpg highway
> >
> > On the ASM 2525 test I got 589 NOx!!!!!.
> >
> > And 16 ppm HC
> >
> > And 0.11% CO
> >
> > Photo of the papers here:
> > http://www.imagestation.com/album/pi...?id=4290636987
> >
> > And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
> > paperwork.
> >
> > Not a fluke, I killed the computer in 2000, this 2003 one was just the
> > only year they actually put the NOx reading on because I don't have to
> > pass that.
> >
> > And the best part is I have passed the last test it ever will need! It
> > becomes too old before the next one.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's

Re: 1986 'Nuttered' CJ7 4.2L Canadian Emissions Data
 

hmmmmm
I read the nutter instructions sounds like this will have to be something
that I will have to do to my 89yj as it will not pass emissions
the sad part is it was recommended that I may need a evap canister guess
what no longer available anywhere.
government sucks

if I fail then 450$ conditional pass, then 650$ ever 2 years really sucks
I know I still need an egr though.
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42605772.F0571EA0@sympatico.ca...
> All the junk can be left in place. It only requires 2 new wires from
> the ignition module to the distributor that fit inside the loom.
>
> You then just set the carb mix and timing. That's it!
>
> If you have to put it back, it is only 2 wires to change.....
>
> Mike
>
> Jeff Strickland wrote:
>>
>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>> news:42604598.8FE80D28@sympatico.ca...
>> > Well after arguing myself blue with a 'mechanic' that says no way a
>> > Jeep
>> > with a carb can pass emissions in California if you disable the
>> > emissions computer or do a 'Nutter' on it after the first guy I think
>> > to
>> > put the directions online:
>> >
>>
>> The problem is, in Calif., the system has to physically be installed. I
>> don't know what the bypass entails, but if stuff is removed, then the
>> vehicle fails because of the visual inspection that comes before the
>> sniff
>> test.
>>
>> There is considerable irony here, the bypass can conceivably result in
>> better performance with the sniffer, but because the system hasn't got
>> all
>> of the components, it automatically fails. The vehicle can spit out
>> better
>> numbers, but if the parts are missing, it will fail. Sad - even stupid -
>> but
>> true.
>>
>> > http://www.off-road.com/jeep/jnutter1.htm
>> >
>> > It gives a sweet 25% 'seat of the pants' power boost and an 'easy' 10
>> > mph extra per gear.
>> >
>> > The mechanic's reasoning is the NOx will blow out or the timing will
>> > have to be too far back to pass.
>> >
>> > The Jeep numbers for an 89 YJ 4.2 in California are 875 NOx on the ASM
>> > 2525 test I was told.
>> >
>> > I found my 2003 ASM 2525 emissions papers for my Canadian 1986 CJ7 that
>> > I
>> > disabled the computer in.
>> >
>> > Specs.
>> >
>> > - 1986 Canadian CJ7 4.2L, Likely 60,000 original miles on it.
>> > - 'No' Catalytic converter (not needed in Canada)
>> > - 2" straight pipe with a high flow Dynomax turbo muffler.
>> > - No computer, 'Nuttered'
>> > - Base timing set at 9 deg BTDC with the vacuum line off like the book
>> > says for a non computer engine. (If I go with the higher RPM setting of
>> > full advance the sticker on a YJ says, I end up with 6 or 7 deg. BTDC
>> > base and I find that too boggy for power so I even have room to play
>> > there.)
>> > - 92 octane ESSO gas.
>> > - Ported on the timing advance
>> > - Stock BBD carb set to 'best lean idle' and always a fresh $20.00
>> > rebuild kit for the test.
>> > - Accel Supercoil for hot spark with Champion plugs and OEM wires.
>> > - Strong pull up to 4400 rpm, then falls flat.
>> > - 11L/100km or something like 23 US mpg highway
>> >
>> > On the ASM 2525 test I got 589 NOx!!!!!.
>> >
>> > And 16 ppm HC
>> >
>> > And 0.11% CO
>> >
>> > Photo of the papers here:
>> > http://www.imagestation.com/album/pi...?id=4290636987
>> >
>> > And a post on alt.binaries.pictures.autos.4x4 with the JPG photo of the
>> > paperwork.
>> >
>> > Not a fluke, I killed the computer in 2000, this 2003 one was just the
>> > only year they actually put the NOx reading on because I don't have to
>> > pass that.
>> >
>> > And the best part is I have passed the last test it ever will need! It
>> > becomes too old before the next one.
>> >
>> > Mike
>> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> > 88 Cherokee 235 BFG AT's