Re: CJ 7 Carb Problems
 

Yup, the "Main Metering Rods" and the "Main Jets" that those rods
operate inside of are your real choice for mixture adjustments.
Being an "old geezer" that grew up tinkering with 60's and 70's
Mopars, I have the advantage of knowing what a BBD is supposed to do
BEFORE "uncle sammies EPA" screwed things up.

The original BBDs did not have that stepper adjustment, and the
passage that it opens and closes did not exist. Knowing that, I
simply blocked them and returned my BBD to a late 1960's state of
tune. I wish I could take you for a ride in my CJ, it amazes
people! You can NOT "bump" the engine over with the starter because
it starts instantly. It idles so smoothly, the only way you can tell
it is running is listening. And I reverified this yesterday, you can
run 20mph in high gear on flat ground and floor the accelerator
resulting in a smooth speed up without any hesitation. I am not
relating all of this to brag, just to convince folks that you CAN get
the BBD to run just fine if you have the skills and time.

To comment on your "tailpipe sniffer" idea, you already have part of
it! Your exhaust pipe has an Oxygen Sensor port, and the performance
industry sells a "mixture monitoring" system that will screw right in
place of the stock O-Sensor. This allows you to observe the mixture
while driving. Hot rodders use them to get the best air to fuel
ratio, so can you!

Hang in there!

Re: CJ 7 Carb Problems
 

Highcountry wrote:
> Yup, the "Main Metering Rods" and the "Main Jets" that those rods
> operate inside of are your real choice for mixture adjustments.
> Being an "old geezer" that grew up tinkering with 60's and 70's
> Mopars, I have the advantage of knowing what a BBD is supposed to do
> BEFORE "uncle sammies EPA" screwed things up.
>
> The original BBDs did not have that stepper adjustment, and the
> passage that it opens and closes did not exist. Knowing that, I
> simply blocked them and returned my BBD to a late 1960's state of
> tune. I wish I could take you for a ride in my CJ, it amazes
> people! You can NOT "bump" the engine over with the starter because
> it starts instantly. It idles so smoothly, the only way you can tell
> it is running is listening. And I reverified this yesterday, you can
> run 20mph in high gear on flat ground and floor the accelerator
> resulting in a smooth speed up without any hesitation. I am not
> relating all of this to brag, just to convince folks that you CAN get
> the BBD to run just fine if you have the skills and time.
>
> To comment on your "tailpipe sniffer" idea, you already have part of
> it! Your exhaust pipe has an Oxygen Sensor port, and the performance
> industry sells a "mixture monitoring" system that will screw right in
> place of the stock O-Sensor. This allows you to observe the mixture
> while driving. Hot rodders use them to get the best air to fuel
> ratio, so can you!
>
> Hang in there!
>
>
>
>

LOL! You are preaching to the converted! I love the BBD. My CJ7 runs
as nice as you describe yours running 'and' passes Canadian emissions
with decent numbers. It isn't a fluke either, I have tuned and
'Nuttered' quite a few with the same results and emissions passes.

I have the manual choke setup and also get instant starts, even at -20.

I have had many folks wonder what is in it for an engine when they
(don't) hear it sputtering at idle and think it must be a V8 when they
see me walk up sand pit walls.

I set my idle mix up with a glass of beer sitting on the air filter and
get no ripples.... :-) Unfortunately the emissions sniffer actually
wants a slight lean rumble in it for the good numbers so I adjust it
accordingly. (1/4 turn lean from 'best lean') It has passed it's last
one due to age!

Blocking those air passages to turn it back is a great idea if you are a
serious tinkerer. I think I will stick with manually setting the pins
for the best power unless I stumble across one of those tuning tools you
mentioned. I wouldn't mind getting a normal BBD, some friends have
managed to find them.

I am running 3.31 gears with 33x9.5's and it just won't stall. I can
walk up sand pit walls at 400 rpm and if I get too steep it just churns
the tires into the sand. Same as pulling in high gear.

I just find with my gearing, if I use 5th on the highway it lugs the
engine at 1700 rpm or so. If I stay with 4th as a top gear which turns
about 2300 rpm at 65 mph, I get the snap in the gas pedal and about 5
mpg more.

1st gear will light up my tires way too easy, 2nd tops out at 54 mph
turning 4400 rpm, 3rd pulls fast to 72-75 mph, 4th buries the speedo and
who knows for 5th...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: CJ 7 Carb Problems
 

Highcountry wrote:
> Yup, the "Main Metering Rods" and the "Main Jets" that those rods
> operate inside of are your real choice for mixture adjustments.
> Being an "old geezer" that grew up tinkering with 60's and 70's
> Mopars, I have the advantage of knowing what a BBD is supposed to do
> BEFORE "uncle sammies EPA" screwed things up.
>
> The original BBDs did not have that stepper adjustment, and the
> passage that it opens and closes did not exist. Knowing that, I
> simply blocked them and returned my BBD to a late 1960's state of
> tune. I wish I could take you for a ride in my CJ, it amazes
> people! You can NOT "bump" the engine over with the starter because
> it starts instantly. It idles so smoothly, the only way you can tell
> it is running is listening. And I reverified this yesterday, you can
> run 20mph in high gear on flat ground and floor the accelerator
> resulting in a smooth speed up without any hesitation. I am not
> relating all of this to brag, just to convince folks that you CAN get
> the BBD to run just fine if you have the skills and time.
>
> To comment on your "tailpipe sniffer" idea, you already have part of
> it! Your exhaust pipe has an Oxygen Sensor port, and the performance
> industry sells a "mixture monitoring" system that will screw right in
> place of the stock O-Sensor. This allows you to observe the mixture
> while driving. Hot rodders use them to get the best air to fuel
> ratio, so can you!
>
> Hang in there!
>
>
>
>

LOL! You are preaching to the converted! I love the BBD. My CJ7 runs
as nice as you describe yours running 'and' passes Canadian emissions
with decent numbers. It isn't a fluke either, I have tuned and
'Nuttered' quite a few with the same results and emissions passes.

I have the manual choke setup and also get instant starts, even at -20.

I have had many folks wonder what is in it for an engine when they
(don't) hear it sputtering at idle and think it must be a V8 when they
see me walk up sand pit walls.

I set my idle mix up with a glass of beer sitting on the air filter and
get no ripples.... :-) Unfortunately the emissions sniffer actually
wants a slight lean rumble in it for the good numbers so I adjust it
accordingly. (1/4 turn lean from 'best lean') It has passed it's last
one due to age!

Blocking those air passages to turn it back is a great idea if you are a
serious tinkerer. I think I will stick with manually setting the pins
for the best power unless I stumble across one of those tuning tools you
mentioned. I wouldn't mind getting a normal BBD, some friends have
managed to find them.

I am running 3.31 gears with 33x9.5's and it just won't stall. I can
walk up sand pit walls at 400 rpm and if I get too steep it just churns
the tires into the sand. Same as pulling in high gear.

I just find with my gearing, if I use 5th on the highway it lugs the
engine at 1700 rpm or so. If I stay with 4th as a top gear which turns
about 2300 rpm at 65 mph, I get the snap in the gas pedal and about 5
mpg more.

1st gear will light up my tires way too easy, 2nd tops out at 54 mph
turning 4400 rpm, 3rd pulls fast to 72-75 mph, 4th buries the speedo and
who knows for 5th...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: CJ 7 Carb Problems
 

Highcountry wrote:
> Yup, the "Main Metering Rods" and the "Main Jets" that those rods
> operate inside of are your real choice for mixture adjustments.
> Being an "old geezer" that grew up tinkering with 60's and 70's
> Mopars, I have the advantage of knowing what a BBD is supposed to do
> BEFORE "uncle sammies EPA" screwed things up.
>
> The original BBDs did not have that stepper adjustment, and the
> passage that it opens and closes did not exist. Knowing that, I
> simply blocked them and returned my BBD to a late 1960's state of
> tune. I wish I could take you for a ride in my CJ, it amazes
> people! You can NOT "bump" the engine over with the starter because
> it starts instantly. It idles so smoothly, the only way you can tell
> it is running is listening. And I reverified this yesterday, you can
> run 20mph in high gear on flat ground and floor the accelerator
> resulting in a smooth speed up without any hesitation. I am not
> relating all of this to brag, just to convince folks that you CAN get
> the BBD to run just fine if you have the skills and time.
>
> To comment on your "tailpipe sniffer" idea, you already have part of
> it! Your exhaust pipe has an Oxygen Sensor port, and the performance
> industry sells a "mixture monitoring" system that will screw right in
> place of the stock O-Sensor. This allows you to observe the mixture
> while driving. Hot rodders use them to get the best air to fuel
> ratio, so can you!
>
> Hang in there!
>
>
>
>

LOL! You are preaching to the converted! I love the BBD. My CJ7 runs
as nice as you describe yours running 'and' passes Canadian emissions
with decent numbers. It isn't a fluke either, I have tuned and
'Nuttered' quite a few with the same results and emissions passes.

I have the manual choke setup and also get instant starts, even at -20.

I have had many folks wonder what is in it for an engine when they
(don't) hear it sputtering at idle and think it must be a V8 when they
see me walk up sand pit walls.

I set my idle mix up with a glass of beer sitting on the air filter and
get no ripples.... :-) Unfortunately the emissions sniffer actually
wants a slight lean rumble in it for the good numbers so I adjust it
accordingly. (1/4 turn lean from 'best lean') It has passed it's last
one due to age!

Blocking those air passages to turn it back is a great idea if you are a
serious tinkerer. I think I will stick with manually setting the pins
for the best power unless I stumble across one of those tuning tools you
mentioned. I wouldn't mind getting a normal BBD, some friends have
managed to find them.

I am running 3.31 gears with 33x9.5's and it just won't stall. I can
walk up sand pit walls at 400 rpm and if I get too steep it just churns
the tires into the sand. Same as pulling in high gear.

I just find with my gearing, if I use 5th on the highway it lugs the
engine at 1700 rpm or so. If I stay with 4th as a top gear which turns
about 2300 rpm at 65 mph, I get the snap in the gas pedal and about 5
mpg more.

1st gear will light up my tires way too easy, 2nd tops out at 54 mph
turning 4400 rpm, 3rd pulls fast to 72-75 mph, 4th buries the speedo and
who knows for 5th...

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: CJ 7 Carb Problems
 

Sorry to rant on the BBD, but I have read SO many articles on how they
suck and you should chunk 'em in the garbage and install a Weber, a
Holley or swap to Injection. Anyone that knows how carbs actually
work would not even consider a Weber and if you have been around as
many Holleys as I have, you would rather walk than depend on one of
those!

I like injection, my 95 Cherokee runs great with it. However, my CJ
runs just as good with it's modified BBD and I can absolutely be
certain of REPAIRING the CJ and making it bring me home. Not so for
the Cherokee with it's "Black Magic" control system!

By the way, I have sent several buddies links to your photo
postings. Those are great!

Bruce from Texas

Re: CJ 7 Carb Problems
 

Sorry to rant on the BBD, but I have read SO many articles on how they
suck and you should chunk 'em in the garbage and install a Weber, a
Holley or swap to Injection. Anyone that knows how carbs actually
work would not even consider a Weber and if you have been around as
many Holleys as I have, you would rather walk than depend on one of
those!

I like injection, my 95 Cherokee runs great with it. However, my CJ
runs just as good with it's modified BBD and I can absolutely be
certain of REPAIRING the CJ and making it bring me home. Not so for
the Cherokee with it's "Black Magic" control system!

By the way, I have sent several buddies links to your photo
postings. Those are great!

Bruce from Texas

Re: CJ 7 Carb Problems
 

Sorry to rant on the BBD, but I have read SO many articles on how they
suck and you should chunk 'em in the garbage and install a Weber, a
Holley or swap to Injection. Anyone that knows how carbs actually
work would not even consider a Weber and if you have been around as
many Holleys as I have, you would rather walk than depend on one of
those!

I like injection, my 95 Cherokee runs great with it. However, my CJ
runs just as good with it's modified BBD and I can absolutely be
certain of REPAIRING the CJ and making it bring me home. Not so for
the Cherokee with it's "Black Magic" control system!

By the way, I have sent several buddies links to your photo
postings. Those are great!

Bruce from Texas

Re: CJ 7 Carb Problems
 

On Feb 24, 12:09 pm, "Highcountry" <highcountry2...@hotmail.com>
wrote:
> Sorry to rant on the BBD, but I have read SO many articles on how they
> suck and you should chunk 'em in the garbage and install a Weber, a
> Holley or swap to Injection. Anyone that knows how carbs actually
> work would not even consider a Weber and if you have been around as
> many Holleys as I have, you would rather walk than depend on one of
> those!
>
> I like injection, my 95 Cherokee runs great with it. However, my CJ
> runs just as good with it's modified BBD and I can absolutely be
> certain of REPAIRING the CJ and making it bring me home. Not so for
> the Cherokee with it's "Black Magic" control system!
>
> By the way, I have sent several buddies links to your photo
> postings. Those are great!
>
> Bruce from Texas

Agreed. This weekend I finally gave up on my Weber and reinstalled my
Carter. Gas mileage, cold starts and throttle response have
returned. I opted to keep my stepper motor/metering pins intact as my
emissions test is coming up next month. I could almost breathe out of
my exhaust pipe.

Re: CJ 7 Carb Problems
 

On Feb 24, 12:09 pm, "Highcountry" <highcountry2...@hotmail.com>
wrote:
> Sorry to rant on the BBD, but I have read SO many articles on how they
> suck and you should chunk 'em in the garbage and install a Weber, a
> Holley or swap to Injection. Anyone that knows how carbs actually
> work would not even consider a Weber and if you have been around as
> many Holleys as I have, you would rather walk than depend on one of
> those!
>
> I like injection, my 95 Cherokee runs great with it. However, my CJ
> runs just as good with it's modified BBD and I can absolutely be
> certain of REPAIRING the CJ and making it bring me home. Not so for
> the Cherokee with it's "Black Magic" control system!
>
> By the way, I have sent several buddies links to your photo
> postings. Those are great!
>
> Bruce from Texas

Agreed. This weekend I finally gave up on my Weber and reinstalled my
Carter. Gas mileage, cold starts and throttle response have
returned. I opted to keep my stepper motor/metering pins intact as my
emissions test is coming up next month. I could almost breathe out of
my exhaust pipe.

Re: CJ 7 Carb Problems
 

On Feb 24, 12:09 pm, "Highcountry" <highcountry2...@hotmail.com>
wrote:
> Sorry to rant on the BBD, but I have read SO many articles on how they
> suck and you should chunk 'em in the garbage and install a Weber, a
> Holley or swap to Injection. Anyone that knows how carbs actually
> work would not even consider a Weber and if you have been around as
> many Holleys as I have, you would rather walk than depend on one of
> those!
>
> I like injection, my 95 Cherokee runs great with it. However, my CJ
> runs just as good with it's modified BBD and I can absolutely be
> certain of REPAIRING the CJ and making it bring me home. Not so for
> the Cherokee with it's "Black Magic" control system!
>
> By the way, I have sent several buddies links to your photo
> postings. Those are great!
>
> Bruce from Texas

Agreed. This weekend I finally gave up on my Weber and reinstalled my
Carter. Gas mileage, cold starts and throttle response have
returned. I opted to keep my stepper motor/metering pins intact as my
emissions test is coming up next month. I could almost breathe out of
my exhaust pipe.