Do you know the brand of the cam?

I'll bet the makers have a recommended timing set and curve (spring
load) speed.

The total advance is also important. I was told 36 degrees should be
total max for my setup. The 258 is quite happy running at 4 or 5
degrees base in some stock setups. I am running 9 base and I think it
is maybe causing some overheating at higher rpm or over 70 mph.

You need to pull the vacuum hose off and put your finger on the end to
see if it sucks at idle or not. That makes a big difference in how it
works and is tuned.

Messing with springs needs serious tuning... A fast advance for short
'power' boosts is different than you want for a street rig.

I have mine set with a ported vacuum advance (no suck at idle, it
advances with the gas pedal) and I can hear the distributor plate snap
to full advanced when I punch the throttle with my hand with the hood
off. I have an Accel SuperCoil, no computer, the stock Carter BBD carb
manually tuned and mine rocks. It picks up and flies and will climb
ravine or sand pit walls at 400 rpm without a stall.

I can light up and smoke my 33" mud's in 1st and chirp nice in 2nd. 2nd
will pull up over 50 + mph at 4400 rpm. Third has hit 80 mph, didn't
catch the rpm.

You have soft advance springs so you likely have even a faster snap than
mine. Mine runs best with 91 or 92 octane. I get 100 miles better per
tank with 91 vs 87!

Just a note. Mine will refuse to run and die under load at 65 mph up
hill pinging like crap if there is any amount of alcohol or ethanol in
the gas!

My 86 owners manual even says 'not' to use any mixes and if you have to
in an emergency to only buy enough to get to real gas. It says
'Performance may be degraded' or something like that. LOL!

Mike

carmine colangelo wrote:
>
> yeah it sure did dump out some white smoke. even more smoke than the 2
> stokes i'm used to working on. but i still cant get the timing above 7
> degrees with out pinging. are there different vacume advances i can bolt to
> the distributer? it seems to me i need more advance on cold starts and less
> timing advance around 2500 rpm's when i am coming up a hill. i'm just not
> sure how to go about doing it.
> thanks carmine
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40CA3B4C.EAB6C04B@sympatico.ca...
> > I have seen lots of folks miss that wiring bit, so it is worth checking.
> >
> > Pour the ATF slow while keeping it running and be warned it 'will' give
> > off one massive white smoke cloud.
> >
> > Mike
> >
> > carmine colangelo wrote:
> > >
> > > i traced the purple wire from the ignition module and it goes to the
> > > distributer. i dont think the computer is even on the jeep any more. it
> was
> > > removed before i bought it. i will try putting a pint of ATF in it to
> remove
> > > some of the carbon
> > > thanks carmine
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> > > > Do you physically have the ignition module connected directly to the
> > > > distributor or does it still go through the computer?
> > > >
> > > > The reason I ask is if the computer is still a physical presence, then
> > > > it has gone into limp home mode which messes with the timing advance
> big
> > > > time.
> > > >
> > > > You can tell by looking at the ignition module, waaayyy down under the
> > > > washer bottle. Check the purple wire coming out of the module. If it
> > > > isn't jumpered to a new wire, you have issues right there. Stock, the
> > > > purple wire goes nowhere, it stops at the first plug.
> > > >
> > > > If you remove any emissions stuff, the ignition has to be rewired to
> > > > work right. It is easy, I always add two new wires rather than mess
> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> > > >
> > > > One other thing is carbon build up. That RV cam and running low RPM
> are
> > > > really bad for carbon build up. This will cause pinging.
> > > >
> > > > I run a pint of ATF slowly down the throat of the carb while keeping
> it
> > > > running with my hand on the throttle. It cleans the carbon out great.
> > > > Some folks use a pint of water to do this and say it works well too.
> > > >
> > > > Mike
> > > >
> > > > carmine colangelo wrote:
> > > > >
> > > > > i am running a weber carb with the vacume advance taken off of the
> base
> > > of
> > > > > ther carb.so i would assume this is manifold vacume. as far as i
> know
> > > the
> > > > > vacume advance is stock. i am running a one line fuel filter with a
> > > pressure
> > > > > regulator. i dont know if stock timing would apply to my jeep
> because it
> > > is
> > > > > a 86 with a r.v. cam and all the computer and emmision stuff taken
> off.
> > > > > thanks carmine
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> > > > > > What kind of carb are you running?
> > > > > >
> > > > > > Do you have the correct gas filter in it and is it in right side
> up?
> > > > > >
> > > > > > Which vacuum advance are you running?
> > > > > >
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > carmine colangelo wrote:
> > > > > > >
> > > > > > > with the gas prices going so high i am tying to get my 1986 jeep
> cj7
> > > 258
> > > > > 6
> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i have
> a
> > > msd ss
> > > > > > > coil, lighter centrifigal advance spring in it. i was running 12
> > > degrees
> > > > > > > advance on super unleaded and had to go all the way down to 6
> > > degrees to
> > > > > get
> > > > > > > it to stop pinging up hills. but now it is allot harder to start
> > > when it
> > > > > is
> > > > > > > cold. anyone have any ideas what i could do to get it to start
> > > better?
> > > > > is 6
> > > > > > > degrees to low on the timing? should i put the stock centrifigal
> > > spring
> > > > > back
> > > > > > > in it to not get so much advance at higher rpm's? i just want to
> get
> > > the
> > > > > > > jeep to run on pump gas and start nice. thanks carmine

 

Carmine,
After thinking about this a bit, your RV cam could be building more cylinder
pressure than the stock cam did. These cams generally have a short duration,
high lift lobe profile. The extra cylinder pressure could be causing the
pinging. With that said, you may want to try another approach by using an
adjustable vacuum advance kit. Crane and others make them, but I don't know
if they make them for your engine. They do make them for the GM HEI though,
and this may be a good time to do this swap if you want. The adjustable vac.
advance will allow you to adjust how much advance, and at what vacuum
reading it starts. The kits also come with centrifugal weight springs
similar to what you have installed already. Here is a link to the product:

http://www.cranecams.com/index.php?s...s&lvl=3&prt=29

Chris


"carmine colangelo" <carmine7@optonline.net> wrote in message
news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv.n et...
> yeah it sure did dump out some white smoke. even more smoke than the 2
> stokes i'm used to working on. but i still cant get the timing above 7
> degrees with out pinging. are there different vacume advances i can bolt
to
> the distributer? it seems to me i need more advance on cold starts and
less
> timing advance around 2500 rpm's when i am coming up a hill. i'm just not
> sure how to go about doing it.
> thanks carmine
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40CA3B4C.EAB6C04B@sympatico.ca...
> > I have seen lots of folks miss that wiring bit, so it is worth checking.
> >
> > Pour the ATF slow while keeping it running and be warned it 'will' give
> > off one massive white smoke cloud.
> >
> > Mike
> >
> > carmine colangelo wrote:
> > >
> > > i traced the purple wire from the ignition module and it goes to the
> > > distributer. i dont think the computer is even on the jeep any more.
it
> was
> > > removed before i bought it. i will try putting a pint of ATF in it to
> remove
> > > some of the carbon
> > > thanks carmine
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> > > > Do you physically have the ignition module connected directly to the
> > > > distributor or does it still go through the computer?
> > > >
> > > > The reason I ask is if the computer is still a physical presence,
then
> > > > it has gone into limp home mode which messes with the timing advance
> big
> > > > time.
> > > >
> > > > You can tell by looking at the ignition module, waaayyy down under
the
> > > > washer bottle. Check the purple wire coming out of the module. If
it
> > > > isn't jumpered to a new wire, you have issues right there. Stock,
the
> > > > purple wire goes nowhere, it stops at the first plug.
> > > >
> > > > If you remove any emissions stuff, the ignition has to be rewired to
> > > > work right. It is easy, I always add two new wires rather than mess
> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> > > >
> > > > One other thing is carbon build up. That RV cam and running low RPM
> are
> > > > really bad for carbon build up. This will cause pinging.
> > > >
> > > > I run a pint of ATF slowly down the throat of the carb while keeping
> it
> > > > running with my hand on the throttle. It cleans the carbon out
great.
> > > > Some folks use a pint of water to do this and say it works well too.
> > > >
> > > > Mike
> > > >
> > > > carmine colangelo wrote:
> > > > >
> > > > > i am running a weber carb with the vacume advance taken off of the
> base
> > > of
> > > > > ther carb.so i would assume this is manifold vacume. as far as i
> know
> > > the
> > > > > vacume advance is stock. i am running a one line fuel filter with
a
> > > pressure
> > > > > regulator. i dont know if stock timing would apply to my jeep
> because it
> > > is
> > > > > a 86 with a r.v. cam and all the computer and emmision stuff taken
> off.
> > > > > thanks carmine
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> > > > > > What kind of carb are you running?
> > > > > >
> > > > > > Do you have the correct gas filter in it and is it in right side
> up?
> > > > > >
> > > > > > Which vacuum advance are you running?
> > > > > >
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > carmine colangelo wrote:
> > > > > > >
> > > > > > > with the gas prices going so high i am tying to get my 1986
jeep
> cj7
> > > 258
> > > > > 6
> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
have
> a
> > > msd ss
> > > > > > > coil, lighter centrifigal advance spring in it. i was running
12
> > > degrees
> > > > > > > advance on super unleaded and had to go all the way down to 6
> > > degrees to
> > > > > get
> > > > > > > it to stop pinging up hills. but now it is allot harder to
start
> > > when it
> > > > > is
> > > > > > > cold. anyone have any ideas what i could do to get it to start
> > > better?
> > > > > is 6
> > > > > > > degrees to low on the timing? should i put the stock
centrifigal
> > > spring
> > > > > back
> > > > > > > in it to not get so much advance at higher rpm's? i just want
to
> get
> > > the
> > > > > > > jeep to run on pump gas and start nice. thanks carmine
>
>

 

Carmine,
After thinking about this a bit, your RV cam could be building more cylinder
pressure than the stock cam did. These cams generally have a short duration,
high lift lobe profile. The extra cylinder pressure could be causing the
pinging. With that said, you may want to try another approach by using an
adjustable vacuum advance kit. Crane and others make them, but I don't know
if they make them for your engine. They do make them for the GM HEI though,
and this may be a good time to do this swap if you want. The adjustable vac.
advance will allow you to adjust how much advance, and at what vacuum
reading it starts. The kits also come with centrifugal weight springs
similar to what you have installed already. Here is a link to the product:

http://www.cranecams.com/index.php?s...s&lvl=3&prt=29

Chris


"carmine colangelo" <carmine7@optonline.net> wrote in message
news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv.n et...
> yeah it sure did dump out some white smoke. even more smoke than the 2
> stokes i'm used to working on. but i still cant get the timing above 7
> degrees with out pinging. are there different vacume advances i can bolt
to
> the distributer? it seems to me i need more advance on cold starts and
less
> timing advance around 2500 rpm's when i am coming up a hill. i'm just not
> sure how to go about doing it.
> thanks carmine
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40CA3B4C.EAB6C04B@sympatico.ca...
> > I have seen lots of folks miss that wiring bit, so it is worth checking.
> >
> > Pour the ATF slow while keeping it running and be warned it 'will' give
> > off one massive white smoke cloud.
> >
> > Mike
> >
> > carmine colangelo wrote:
> > >
> > > i traced the purple wire from the ignition module and it goes to the
> > > distributer. i dont think the computer is even on the jeep any more.
it
> was
> > > removed before i bought it. i will try putting a pint of ATF in it to
> remove
> > > some of the carbon
> > > thanks carmine
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> > > > Do you physically have the ignition module connected directly to the
> > > > distributor or does it still go through the computer?
> > > >
> > > > The reason I ask is if the computer is still a physical presence,
then
> > > > it has gone into limp home mode which messes with the timing advance
> big
> > > > time.
> > > >
> > > > You can tell by looking at the ignition module, waaayyy down under
the
> > > > washer bottle. Check the purple wire coming out of the module. If
it
> > > > isn't jumpered to a new wire, you have issues right there. Stock,
the
> > > > purple wire goes nowhere, it stops at the first plug.
> > > >
> > > > If you remove any emissions stuff, the ignition has to be rewired to
> > > > work right. It is easy, I always add two new wires rather than mess
> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> > > >
> > > > One other thing is carbon build up. That RV cam and running low RPM
> are
> > > > really bad for carbon build up. This will cause pinging.
> > > >
> > > > I run a pint of ATF slowly down the throat of the carb while keeping
> it
> > > > running with my hand on the throttle. It cleans the carbon out
great.
> > > > Some folks use a pint of water to do this and say it works well too.
> > > >
> > > > Mike
> > > >
> > > > carmine colangelo wrote:
> > > > >
> > > > > i am running a weber carb with the vacume advance taken off of the
> base
> > > of
> > > > > ther carb.so i would assume this is manifold vacume. as far as i
> know
> > > the
> > > > > vacume advance is stock. i am running a one line fuel filter with
a
> > > pressure
> > > > > regulator. i dont know if stock timing would apply to my jeep
> because it
> > > is
> > > > > a 86 with a r.v. cam and all the computer and emmision stuff taken
> off.
> > > > > thanks carmine
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> > > > > > What kind of carb are you running?
> > > > > >
> > > > > > Do you have the correct gas filter in it and is it in right side
> up?
> > > > > >
> > > > > > Which vacuum advance are you running?
> > > > > >
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > carmine colangelo wrote:
> > > > > > >
> > > > > > > with the gas prices going so high i am tying to get my 1986
jeep
> cj7
> > > 258
> > > > > 6
> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
have
> a
> > > msd ss
> > > > > > > coil, lighter centrifigal advance spring in it. i was running
12
> > > degrees
> > > > > > > advance on super unleaded and had to go all the way down to 6
> > > degrees to
> > > > > get
> > > > > > > it to stop pinging up hills. but now it is allot harder to
start
> > > when it
> > > > > is
> > > > > > > cold. anyone have any ideas what i could do to get it to start
> > > better?
> > > > > is 6
> > > > > > > degrees to low on the timing? should i put the stock
centrifigal
> > > spring
> > > > > back
> > > > > > > in it to not get so much advance at higher rpm's? i just want
to
> get
> > > the
> > > > > > > jeep to run on pump gas and start nice. thanks carmine
>
>

 

Carmine,
After thinking about this a bit, your RV cam could be building more cylinder
pressure than the stock cam did. These cams generally have a short duration,
high lift lobe profile. The extra cylinder pressure could be causing the
pinging. With that said, you may want to try another approach by using an
adjustable vacuum advance kit. Crane and others make them, but I don't know
if they make them for your engine. They do make them for the GM HEI though,
and this may be a good time to do this swap if you want. The adjustable vac.
advance will allow you to adjust how much advance, and at what vacuum
reading it starts. The kits also come with centrifugal weight springs
similar to what you have installed already. Here is a link to the product:

http://www.cranecams.com/index.php?s...s&lvl=3&prt=29

Chris


"carmine colangelo" <carmine7@optonline.net> wrote in message
news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv.n et...
> yeah it sure did dump out some white smoke. even more smoke than the 2
> stokes i'm used to working on. but i still cant get the timing above 7
> degrees with out pinging. are there different vacume advances i can bolt
to
> the distributer? it seems to me i need more advance on cold starts and
less
> timing advance around 2500 rpm's when i am coming up a hill. i'm just not
> sure how to go about doing it.
> thanks carmine
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40CA3B4C.EAB6C04B@sympatico.ca...
> > I have seen lots of folks miss that wiring bit, so it is worth checking.
> >
> > Pour the ATF slow while keeping it running and be warned it 'will' give
> > off one massive white smoke cloud.
> >
> > Mike
> >
> > carmine colangelo wrote:
> > >
> > > i traced the purple wire from the ignition module and it goes to the
> > > distributer. i dont think the computer is even on the jeep any more.
it
> was
> > > removed before i bought it. i will try putting a pint of ATF in it to
> remove
> > > some of the carbon
> > > thanks carmine
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> > > > Do you physically have the ignition module connected directly to the
> > > > distributor or does it still go through the computer?
> > > >
> > > > The reason I ask is if the computer is still a physical presence,
then
> > > > it has gone into limp home mode which messes with the timing advance
> big
> > > > time.
> > > >
> > > > You can tell by looking at the ignition module, waaayyy down under
the
> > > > washer bottle. Check the purple wire coming out of the module. If
it
> > > > isn't jumpered to a new wire, you have issues right there. Stock,
the
> > > > purple wire goes nowhere, it stops at the first plug.
> > > >
> > > > If you remove any emissions stuff, the ignition has to be rewired to
> > > > work right. It is easy, I always add two new wires rather than mess
> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> > > >
> > > > One other thing is carbon build up. That RV cam and running low RPM
> are
> > > > really bad for carbon build up. This will cause pinging.
> > > >
> > > > I run a pint of ATF slowly down the throat of the carb while keeping
> it
> > > > running with my hand on the throttle. It cleans the carbon out
great.
> > > > Some folks use a pint of water to do this and say it works well too.
> > > >
> > > > Mike
> > > >
> > > > carmine colangelo wrote:
> > > > >
> > > > > i am running a weber carb with the vacume advance taken off of the
> base
> > > of
> > > > > ther carb.so i would assume this is manifold vacume. as far as i
> know
> > > the
> > > > > vacume advance is stock. i am running a one line fuel filter with
a
> > > pressure
> > > > > regulator. i dont know if stock timing would apply to my jeep
> because it
> > > is
> > > > > a 86 with a r.v. cam and all the computer and emmision stuff taken
> off.
> > > > > thanks carmine
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> > > > > > What kind of carb are you running?
> > > > > >
> > > > > > Do you have the correct gas filter in it and is it in right side
> up?
> > > > > >
> > > > > > Which vacuum advance are you running?
> > > > > >
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > carmine colangelo wrote:
> > > > > > >
> > > > > > > with the gas prices going so high i am tying to get my 1986
jeep
> cj7
> > > 258
> > > > > 6
> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
have
> a
> > > msd ss
> > > > > > > coil, lighter centrifigal advance spring in it. i was running
12
> > > degrees
> > > > > > > advance on super unleaded and had to go all the way down to 6
> > > degrees to
> > > > > get
> > > > > > > it to stop pinging up hills. but now it is allot harder to
start
> > > when it
> > > > > is
> > > > > > > cold. anyone have any ideas what i could do to get it to start
> > > better?
> > > > > is 6
> > > > > > > degrees to low on the timing? should i put the stock
centrifigal
> > > spring
> > > > > back
> > > > > > > in it to not get so much advance at higher rpm's? i just want
to
> get
> > > the
> > > > > > > jeep to run on pump gas and start nice. thanks carmine
>
>

 

Carmine,
After thinking about this a bit, your RV cam could be building more cylinder
pressure than the stock cam did. These cams generally have a short duration,
high lift lobe profile. The extra cylinder pressure could be causing the
pinging. With that said, you may want to try another approach by using an
adjustable vacuum advance kit. Crane and others make them, but I don't know
if they make them for your engine. They do make them for the GM HEI though,
and this may be a good time to do this swap if you want. The adjustable vac.
advance will allow you to adjust how much advance, and at what vacuum
reading it starts. The kits also come with centrifugal weight springs
similar to what you have installed already. Here is a link to the product:

http://www.cranecams.com/index.php?s...s&lvl=3&prt=29

Chris


"carmine colangelo" <carmine7@optonline.net> wrote in message
news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv.n et...
> yeah it sure did dump out some white smoke. even more smoke than the 2
> stokes i'm used to working on. but i still cant get the timing above 7
> degrees with out pinging. are there different vacume advances i can bolt
to
> the distributer? it seems to me i need more advance on cold starts and
less
> timing advance around 2500 rpm's when i am coming up a hill. i'm just not
> sure how to go about doing it.
> thanks carmine
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:40CA3B4C.EAB6C04B@sympatico.ca...
> > I have seen lots of folks miss that wiring bit, so it is worth checking.
> >
> > Pour the ATF slow while keeping it running and be warned it 'will' give
> > off one massive white smoke cloud.
> >
> > Mike
> >
> > carmine colangelo wrote:
> > >
> > > i traced the purple wire from the ignition module and it goes to the
> > > distributer. i dont think the computer is even on the jeep any more.
it
> was
> > > removed before i bought it. i will try putting a pint of ATF in it to
> remove
> > > some of the carbon
> > > thanks carmine
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> > > > Do you physically have the ignition module connected directly to the
> > > > distributor or does it still go through the computer?
> > > >
> > > > The reason I ask is if the computer is still a physical presence,
then
> > > > it has gone into limp home mode which messes with the timing advance
> big
> > > > time.
> > > >
> > > > You can tell by looking at the ignition module, waaayyy down under
the
> > > > washer bottle. Check the purple wire coming out of the module. If
it
> > > > isn't jumpered to a new wire, you have issues right there. Stock,
the
> > > > purple wire goes nowhere, it stops at the first plug.
> > > >
> > > > If you remove any emissions stuff, the ignition has to be rewired to
> > > > work right. It is easy, I always add two new wires rather than mess
> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> > > >
> > > > One other thing is carbon build up. That RV cam and running low RPM
> are
> > > > really bad for carbon build up. This will cause pinging.
> > > >
> > > > I run a pint of ATF slowly down the throat of the carb while keeping
> it
> > > > running with my hand on the throttle. It cleans the carbon out
great.
> > > > Some folks use a pint of water to do this and say it works well too.
> > > >
> > > > Mike
> > > >
> > > > carmine colangelo wrote:
> > > > >
> > > > > i am running a weber carb with the vacume advance taken off of the
> base
> > > of
> > > > > ther carb.so i would assume this is manifold vacume. as far as i
> know
> > > the
> > > > > vacume advance is stock. i am running a one line fuel filter with
a
> > > pressure
> > > > > regulator. i dont know if stock timing would apply to my jeep
> because it
> > > is
> > > > > a 86 with a r.v. cam and all the computer and emmision stuff taken
> off.
> > > > > thanks carmine
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> > > > > > What kind of carb are you running?
> > > > > >
> > > > > > Do you have the correct gas filter in it and is it in right side
> up?
> > > > > >
> > > > > > Which vacuum advance are you running?
> > > > > >
> > > > > > Mike
> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > 88 Cherokee 235 BFG AT's
> > > > > >
> > > > > > carmine colangelo wrote:
> > > > > > >
> > > > > > > with the gas prices going so high i am tying to get my 1986
jeep
> cj7
> > > 258
> > > > > 6
> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
have
> a
> > > msd ss
> > > > > > > coil, lighter centrifigal advance spring in it. i was running
12
> > > degrees
> > > > > > > advance on super unleaded and had to go all the way down to 6
> > > degrees to
> > > > > get
> > > > > > > it to stop pinging up hills. but now it is allot harder to
start
> > > when it
> > > > > is
> > > > > > > cold. anyone have any ideas what i could do to get it to start
> > > better?
> > > > > is 6
> > > > > > > degrees to low on the timing? should i put the stock
centrifigal
> > > spring
> > > > > back
> > > > > > > in it to not get so much advance at higher rpm's? i just want
to
> get
> > > the
> > > > > > > jeep to run on pump gas and start nice. thanks carmine
>
>

 

Some engines have an adjustment. The aftermarket ones have this adjustment,
as well as a stepped limiter plate that is used to limit the amount of
advance. The adjustment inside the nipple is for adjusting the amount of
vacuum it takes to pull the advance lever. This might be all he needs.

Chris

"bllsht" <nospam@invaliddot.net> wrote in message
news:qrvkc01ff125fstb7qung30ppr2kl43vnd@4ax.com...
> I'm pretty sure the vacuum advance on the 258 IS adjustable. I know for
sure
> the V8 engines were. It's takes a 1/8" allen wrench inserted into the
vacuum
> nipple to adjust it.
>
>
>
> In message <JNsyc.12624$Fd.11018@twister.rdc-kc.rr.com>, "c" wrote:
>
> >Carmine,
> >After thinking about this a bit, your RV cam could be building more
cylinder
> >pressure than the stock cam did. These cams generally have a short
duration,
> >high lift lobe profile. The extra cylinder pressure could be causing the
> >pinging. With that said, you may want to try another approach by using an
> >adjustable vacuum advance kit. Crane and others make them, but I don't
know
> >if they make them for your engine. They do make them for the GM HEI
though,
> >and this may be a good time to do this swap if you want. The adjustable
vac.
> >advance will allow you to adjust how much advance, and at what vacuum
> >reading it starts. The kits also come with centrifugal weight springs
> >similar to what you have installed already. Here is a link to the
product:
> >
> >http://www.cranecams.com/index.php?s...s&lvl=3&prt=29
> >
> >Chris
> >
> >
> >"carmine colangelo" <carmine7@optonline.net> wrote in message
> >news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv. net...
> >> yeah it sure did dump out some white smoke. even more smoke than the 2
> >> stokes i'm used to working on. but i still cant get the timing above 7
> >> degrees with out pinging. are there different vacume advances i can
bolt
> >to
> >> the distributer? it seems to me i need more advance on cold starts and
> >less
> >> timing advance around 2500 rpm's when i am coming up a hill. i'm just
not
> >> sure how to go about doing it.
> >> thanks carmine
> >>
> >> "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> news:40CA3B4C.EAB6C04B@sympatico.ca...
> >> > I have seen lots of folks miss that wiring bit, so it is worth
checking.
> >> >
> >> > Pour the ATF slow while keeping it running and be warned it 'will'
give
> >> > off one massive white smoke cloud.
> >> >
> >> > Mike
> >> >
> >> > carmine colangelo wrote:
> >> > >
> >> > > i traced the purple wire from the ignition module and it goes to
the
> >> > > distributer. i dont think the computer is even on the jeep any
more.
> >it
> >> was
> >> > > removed before i bought it. i will try putting a pint of ATF in it
to
> >> remove
> >> > > some of the carbon
> >> > > thanks carmine
> >> > >
> >> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> >> > > > Do you physically have the ignition module connected directly to
the
> >> > > > distributor or does it still go through the computer?
> >> > > >
> >> > > > The reason I ask is if the computer is still a physical presence,
> >then
> >> > > > it has gone into limp home mode which messes with the timing
advance
> >> big
> >> > > > time.
> >> > > >
> >> > > > You can tell by looking at the ignition module, waaayyy down
under
> >the
> >> > > > washer bottle. Check the purple wire coming out of the module.
If
> >it
> >> > > > isn't jumpered to a new wire, you have issues right there.
Stock,
> >the
> >> > > > purple wire goes nowhere, it stops at the first plug.
> >> > > >
> >> > > > If you remove any emissions stuff, the ignition has to be rewired
to
> >> > > > work right. It is easy, I always add two new wires rather than
mess
> >> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> >> > > >
> >> > > > One other thing is carbon build up. That RV cam and running low
RPM
> >> are
> >> > > > really bad for carbon build up. This will cause pinging.
> >> > > >
> >> > > > I run a pint of ATF slowly down the throat of the carb while
keeping
> >> it
> >> > > > running with my hand on the throttle. It cleans the carbon out
> >great.
> >> > > > Some folks use a pint of water to do this and say it works well
too.
> >> > > >
> >> > > > Mike
> >> > > >
> >> > > > carmine colangelo wrote:
> >> > > > >
> >> > > > > i am running a weber carb with the vacume advance taken off of
the
> >> base
> >> > > of
> >> > > > > ther carb.so i would assume this is manifold vacume. as far as
i
> >> know
> >> > > the
> >> > > > > vacume advance is stock. i am running a one line fuel filter
with
> >a
> >> > > pressure
> >> > > > > regulator. i dont know if stock timing would apply to my jeep
> >> because it
> >> > > is
> >> > > > > a 86 with a r.v. cam and all the computer and emmision stuff
taken
> >> off.
> >> > > > > thanks carmine
> >> > > > >
> >> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> >> > > > > > What kind of carb are you running?
> >> > > > > >
> >> > > > > > Do you have the correct gas filter in it and is it in right
side
> >> up?
> >> > > > > >
> >> > > > > > Which vacuum advance are you running?
> >> > > > > >
> >> > > > > > Mike
> >> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >> > > > > > 88 Cherokee 235 BFG AT's
> >> > > > > >
> >> > > > > > carmine colangelo wrote:
> >> > > > > > >
> >> > > > > > > with the gas prices going so high i am tying to get my 1986
> >jeep
> >> cj7
> >> > > 258
> >> > > > > 6
> >> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
> >have
> >> a
> >> > > msd ss
> >> > > > > > > coil, lighter centrifigal advance spring in it. i was
running
> >12
> >> > > degrees
> >> > > > > > > advance on super unleaded and had to go all the way down to
6
> >> > > degrees to
> >> > > > > get
> >> > > > > > > it to stop pinging up hills. but now it is allot harder to
> >start
> >> > > when it
> >> > > > > is
> >> > > > > > > cold. anyone have any ideas what i could do to get it to
start
> >> > > better?
> >> > > > > is 6
> >> > > > > > > degrees to low on the timing? should i put the stock
> >centrifigal
> >> > > spring
> >> > > > > back
> >> > > > > > > in it to not get so much advance at higher rpm's? i just
want
> >to
> >> get
> >> > > the
> >> > > > > > > jeep to run on pump gas and start nice. thanks carmine
> >>
> >>
> >
>

 

Some engines have an adjustment. The aftermarket ones have this adjustment,
as well as a stepped limiter plate that is used to limit the amount of
advance. The adjustment inside the nipple is for adjusting the amount of
vacuum it takes to pull the advance lever. This might be all he needs.

Chris

"bllsht" <nospam@invaliddot.net> wrote in message
news:qrvkc01ff125fstb7qung30ppr2kl43vnd@4ax.com...
> I'm pretty sure the vacuum advance on the 258 IS adjustable. I know for
sure
> the V8 engines were. It's takes a 1/8" allen wrench inserted into the
vacuum
> nipple to adjust it.
>
>
>
> In message <JNsyc.12624$Fd.11018@twister.rdc-kc.rr.com>, "c" wrote:
>
> >Carmine,
> >After thinking about this a bit, your RV cam could be building more
cylinder
> >pressure than the stock cam did. These cams generally have a short
duration,
> >high lift lobe profile. The extra cylinder pressure could be causing the
> >pinging. With that said, you may want to try another approach by using an
> >adjustable vacuum advance kit. Crane and others make them, but I don't
know
> >if they make them for your engine. They do make them for the GM HEI
though,
> >and this may be a good time to do this swap if you want. The adjustable
vac.
> >advance will allow you to adjust how much advance, and at what vacuum
> >reading it starts. The kits also come with centrifugal weight springs
> >similar to what you have installed already. Here is a link to the
product:
> >
> >http://www.cranecams.com/index.php?s...s&lvl=3&prt=29
> >
> >Chris
> >
> >
> >"carmine colangelo" <carmine7@optonline.net> wrote in message
> >news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv. net...
> >> yeah it sure did dump out some white smoke. even more smoke than the 2
> >> stokes i'm used to working on. but i still cant get the timing above 7
> >> degrees with out pinging. are there different vacume advances i can
bolt
> >to
> >> the distributer? it seems to me i need more advance on cold starts and
> >less
> >> timing advance around 2500 rpm's when i am coming up a hill. i'm just
not
> >> sure how to go about doing it.
> >> thanks carmine
> >>
> >> "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> news:40CA3B4C.EAB6C04B@sympatico.ca...
> >> > I have seen lots of folks miss that wiring bit, so it is worth
checking.
> >> >
> >> > Pour the ATF slow while keeping it running and be warned it 'will'
give
> >> > off one massive white smoke cloud.
> >> >
> >> > Mike
> >> >
> >> > carmine colangelo wrote:
> >> > >
> >> > > i traced the purple wire from the ignition module and it goes to
the
> >> > > distributer. i dont think the computer is even on the jeep any
more.
> >it
> >> was
> >> > > removed before i bought it. i will try putting a pint of ATF in it
to
> >> remove
> >> > > some of the carbon
> >> > > thanks carmine
> >> > >
> >> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> >> > > > Do you physically have the ignition module connected directly to
the
> >> > > > distributor or does it still go through the computer?
> >> > > >
> >> > > > The reason I ask is if the computer is still a physical presence,
> >then
> >> > > > it has gone into limp home mode which messes with the timing
advance
> >> big
> >> > > > time.
> >> > > >
> >> > > > You can tell by looking at the ignition module, waaayyy down
under
> >the
> >> > > > washer bottle. Check the purple wire coming out of the module.
If
> >it
> >> > > > isn't jumpered to a new wire, you have issues right there.
Stock,
> >the
> >> > > > purple wire goes nowhere, it stops at the first plug.
> >> > > >
> >> > > > If you remove any emissions stuff, the ignition has to be rewired
to
> >> > > > work right. It is easy, I always add two new wires rather than
mess
> >> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> >> > > >
> >> > > > One other thing is carbon build up. That RV cam and running low
RPM
> >> are
> >> > > > really bad for carbon build up. This will cause pinging.
> >> > > >
> >> > > > I run a pint of ATF slowly down the throat of the carb while
keeping
> >> it
> >> > > > running with my hand on the throttle. It cleans the carbon out
> >great.
> >> > > > Some folks use a pint of water to do this and say it works well
too.
> >> > > >
> >> > > > Mike
> >> > > >
> >> > > > carmine colangelo wrote:
> >> > > > >
> >> > > > > i am running a weber carb with the vacume advance taken off of
the
> >> base
> >> > > of
> >> > > > > ther carb.so i would assume this is manifold vacume. as far as
i
> >> know
> >> > > the
> >> > > > > vacume advance is stock. i am running a one line fuel filter
with
> >a
> >> > > pressure
> >> > > > > regulator. i dont know if stock timing would apply to my jeep
> >> because it
> >> > > is
> >> > > > > a 86 with a r.v. cam and all the computer and emmision stuff
taken
> >> off.
> >> > > > > thanks carmine
> >> > > > >
> >> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> >> > > > > > What kind of carb are you running?
> >> > > > > >
> >> > > > > > Do you have the correct gas filter in it and is it in right
side
> >> up?
> >> > > > > >
> >> > > > > > Which vacuum advance are you running?
> >> > > > > >
> >> > > > > > Mike
> >> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >> > > > > > 88 Cherokee 235 BFG AT's
> >> > > > > >
> >> > > > > > carmine colangelo wrote:
> >> > > > > > >
> >> > > > > > > with the gas prices going so high i am tying to get my 1986
> >jeep
> >> cj7
> >> > > 258
> >> > > > > 6
> >> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
> >have
> >> a
> >> > > msd ss
> >> > > > > > > coil, lighter centrifigal advance spring in it. i was
running
> >12
> >> > > degrees
> >> > > > > > > advance on super unleaded and had to go all the way down to
6
> >> > > degrees to
> >> > > > > get
> >> > > > > > > it to stop pinging up hills. but now it is allot harder to
> >start
> >> > > when it
> >> > > > > is
> >> > > > > > > cold. anyone have any ideas what i could do to get it to
start
> >> > > better?
> >> > > > > is 6
> >> > > > > > > degrees to low on the timing? should i put the stock
> >centrifigal
> >> > > spring
> >> > > > > back
> >> > > > > > > in it to not get so much advance at higher rpm's? i just
want
> >to
> >> get
> >> > > the
> >> > > > > > > jeep to run on pump gas and start nice. thanks carmine
> >>
> >>
> >
>

 

Some engines have an adjustment. The aftermarket ones have this adjustment,
as well as a stepped limiter plate that is used to limit the amount of
advance. The adjustment inside the nipple is for adjusting the amount of
vacuum it takes to pull the advance lever. This might be all he needs.

Chris

"bllsht" <nospam@invaliddot.net> wrote in message
news:qrvkc01ff125fstb7qung30ppr2kl43vnd@4ax.com...
> I'm pretty sure the vacuum advance on the 258 IS adjustable. I know for
sure
> the V8 engines were. It's takes a 1/8" allen wrench inserted into the
vacuum
> nipple to adjust it.
>
>
>
> In message <JNsyc.12624$Fd.11018@twister.rdc-kc.rr.com>, "c" wrote:
>
> >Carmine,
> >After thinking about this a bit, your RV cam could be building more
cylinder
> >pressure than the stock cam did. These cams generally have a short
duration,
> >high lift lobe profile. The extra cylinder pressure could be causing the
> >pinging. With that said, you may want to try another approach by using an
> >adjustable vacuum advance kit. Crane and others make them, but I don't
know
> >if they make them for your engine. They do make them for the GM HEI
though,
> >and this may be a good time to do this swap if you want. The adjustable
vac.
> >advance will allow you to adjust how much advance, and at what vacuum
> >reading it starts. The kits also come with centrifugal weight springs
> >similar to what you have installed already. Here is a link to the
product:
> >
> >http://www.cranecams.com/index.php?s...s&lvl=3&prt=29
> >
> >Chris
> >
> >
> >"carmine colangelo" <carmine7@optonline.net> wrote in message
> >news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv. net...
> >> yeah it sure did dump out some white smoke. even more smoke than the 2
> >> stokes i'm used to working on. but i still cant get the timing above 7
> >> degrees with out pinging. are there different vacume advances i can
bolt
> >to
> >> the distributer? it seems to me i need more advance on cold starts and
> >less
> >> timing advance around 2500 rpm's when i am coming up a hill. i'm just
not
> >> sure how to go about doing it.
> >> thanks carmine
> >>
> >> "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> news:40CA3B4C.EAB6C04B@sympatico.ca...
> >> > I have seen lots of folks miss that wiring bit, so it is worth
checking.
> >> >
> >> > Pour the ATF slow while keeping it running and be warned it 'will'
give
> >> > off one massive white smoke cloud.
> >> >
> >> > Mike
> >> >
> >> > carmine colangelo wrote:
> >> > >
> >> > > i traced the purple wire from the ignition module and it goes to
the
> >> > > distributer. i dont think the computer is even on the jeep any
more.
> >it
> >> was
> >> > > removed before i bought it. i will try putting a pint of ATF in it
to
> >> remove
> >> > > some of the carbon
> >> > > thanks carmine
> >> > >
> >> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> >> > > > Do you physically have the ignition module connected directly to
the
> >> > > > distributor or does it still go through the computer?
> >> > > >
> >> > > > The reason I ask is if the computer is still a physical presence,
> >then
> >> > > > it has gone into limp home mode which messes with the timing
advance
> >> big
> >> > > > time.
> >> > > >
> >> > > > You can tell by looking at the ignition module, waaayyy down
under
> >the
> >> > > > washer bottle. Check the purple wire coming out of the module.
If
> >it
> >> > > > isn't jumpered to a new wire, you have issues right there.
Stock,
> >the
> >> > > > purple wire goes nowhere, it stops at the first plug.
> >> > > >
> >> > > > If you remove any emissions stuff, the ignition has to be rewired
to
> >> > > > work right. It is easy, I always add two new wires rather than
mess
> >> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> >> > > >
> >> > > > One other thing is carbon build up. That RV cam and running low
RPM
> >> are
> >> > > > really bad for carbon build up. This will cause pinging.
> >> > > >
> >> > > > I run a pint of ATF slowly down the throat of the carb while
keeping
> >> it
> >> > > > running with my hand on the throttle. It cleans the carbon out
> >great.
> >> > > > Some folks use a pint of water to do this and say it works well
too.
> >> > > >
> >> > > > Mike
> >> > > >
> >> > > > carmine colangelo wrote:
> >> > > > >
> >> > > > > i am running a weber carb with the vacume advance taken off of
the
> >> base
> >> > > of
> >> > > > > ther carb.so i would assume this is manifold vacume. as far as
i
> >> know
> >> > > the
> >> > > > > vacume advance is stock. i am running a one line fuel filter
with
> >a
> >> > > pressure
> >> > > > > regulator. i dont know if stock timing would apply to my jeep
> >> because it
> >> > > is
> >> > > > > a 86 with a r.v. cam and all the computer and emmision stuff
taken
> >> off.
> >> > > > > thanks carmine
> >> > > > >
> >> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> >> > > > > > What kind of carb are you running?
> >> > > > > >
> >> > > > > > Do you have the correct gas filter in it and is it in right
side
> >> up?
> >> > > > > >
> >> > > > > > Which vacuum advance are you running?
> >> > > > > >
> >> > > > > > Mike
> >> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >> > > > > > 88 Cherokee 235 BFG AT's
> >> > > > > >
> >> > > > > > carmine colangelo wrote:
> >> > > > > > >
> >> > > > > > > with the gas prices going so high i am tying to get my 1986
> >jeep
> >> cj7
> >> > > 258
> >> > > > > 6
> >> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
> >have
> >> a
> >> > > msd ss
> >> > > > > > > coil, lighter centrifigal advance spring in it. i was
running
> >12
> >> > > degrees
> >> > > > > > > advance on super unleaded and had to go all the way down to
6
> >> > > degrees to
> >> > > > > get
> >> > > > > > > it to stop pinging up hills. but now it is allot harder to
> >start
> >> > > when it
> >> > > > > is
> >> > > > > > > cold. anyone have any ideas what i could do to get it to
start
> >> > > better?
> >> > > > > is 6
> >> > > > > > > degrees to low on the timing? should i put the stock
> >centrifigal
> >> > > spring
> >> > > > > back
> >> > > > > > > in it to not get so much advance at higher rpm's? i just
want
> >to
> >> get
> >> > > the
> >> > > > > > > jeep to run on pump gas and start nice. thanks carmine
> >>
> >>
> >
>

 

Some engines have an adjustment. The aftermarket ones have this adjustment,
as well as a stepped limiter plate that is used to limit the amount of
advance. The adjustment inside the nipple is for adjusting the amount of
vacuum it takes to pull the advance lever. This might be all he needs.

Chris

"bllsht" <nospam@invaliddot.net> wrote in message
news:qrvkc01ff125fstb7qung30ppr2kl43vnd@4ax.com...
> I'm pretty sure the vacuum advance on the 258 IS adjustable. I know for
sure
> the V8 engines were. It's takes a 1/8" allen wrench inserted into the
vacuum
> nipple to adjust it.
>
>
>
> In message <JNsyc.12624$Fd.11018@twister.rdc-kc.rr.com>, "c" wrote:
>
> >Carmine,
> >After thinking about this a bit, your RV cam could be building more
cylinder
> >pressure than the stock cam did. These cams generally have a short
duration,
> >high lift lobe profile. The extra cylinder pressure could be causing the
> >pinging. With that said, you may want to try another approach by using an
> >adjustable vacuum advance kit. Crane and others make them, but I don't
know
> >if they make them for your engine. They do make them for the GM HEI
though,
> >and this may be a good time to do this swap if you want. The adjustable
vac.
> >advance will allow you to adjust how much advance, and at what vacuum
> >reading it starts. The kits also come with centrifugal weight springs
> >similar to what you have installed already. Here is a link to the
product:
> >
> >http://www.cranecams.com/index.php?s...s&lvl=3&prt=29
> >
> >Chris
> >
> >
> >"carmine colangelo" <carmine7@optonline.net> wrote in message
> >news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv. net...
> >> yeah it sure did dump out some white smoke. even more smoke than the 2
> >> stokes i'm used to working on. but i still cant get the timing above 7
> >> degrees with out pinging. are there different vacume advances i can
bolt
> >to
> >> the distributer? it seems to me i need more advance on cold starts and
> >less
> >> timing advance around 2500 rpm's when i am coming up a hill. i'm just
not
> >> sure how to go about doing it.
> >> thanks carmine
> >>
> >> "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> news:40CA3B4C.EAB6C04B@sympatico.ca...
> >> > I have seen lots of folks miss that wiring bit, so it is worth
checking.
> >> >
> >> > Pour the ATF slow while keeping it running and be warned it 'will'
give
> >> > off one massive white smoke cloud.
> >> >
> >> > Mike
> >> >
> >> > carmine colangelo wrote:
> >> > >
> >> > > i traced the purple wire from the ignition module and it goes to
the
> >> > > distributer. i dont think the computer is even on the jeep any
more.
> >it
> >> was
> >> > > removed before i bought it. i will try putting a pint of ATF in it
to
> >> remove
> >> > > some of the carbon
> >> > > thanks carmine
> >> > >
> >> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
> >> > > > Do you physically have the ignition module connected directly to
the
> >> > > > distributor or does it still go through the computer?
> >> > > >
> >> > > > The reason I ask is if the computer is still a physical presence,
> >then
> >> > > > it has gone into limp home mode which messes with the timing
advance
> >> big
> >> > > > time.
> >> > > >
> >> > > > You can tell by looking at the ignition module, waaayyy down
under
> >the
> >> > > > washer bottle. Check the purple wire coming out of the module.
If
> >it
> >> > > > isn't jumpered to a new wire, you have issues right there.
Stock,
> >the
> >> > > > purple wire goes nowhere, it stops at the first plug.
> >> > > >
> >> > > > If you remove any emissions stuff, the ignition has to be rewired
to
> >> > > > work right. It is easy, I always add two new wires rather than
mess
> >> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
> >> > > >
> >> > > > One other thing is carbon build up. That RV cam and running low
RPM
> >> are
> >> > > > really bad for carbon build up. This will cause pinging.
> >> > > >
> >> > > > I run a pint of ATF slowly down the throat of the carb while
keeping
> >> it
> >> > > > running with my hand on the throttle. It cleans the carbon out
> >great.
> >> > > > Some folks use a pint of water to do this and say it works well
too.
> >> > > >
> >> > > > Mike
> >> > > >
> >> > > > carmine colangelo wrote:
> >> > > > >
> >> > > > > i am running a weber carb with the vacume advance taken off of
the
> >> base
> >> > > of
> >> > > > > ther carb.so i would assume this is manifold vacume. as far as
i
> >> know
> >> > > the
> >> > > > > vacume advance is stock. i am running a one line fuel filter
with
> >a
> >> > > pressure
> >> > > > > regulator. i dont know if stock timing would apply to my jeep
> >> because it
> >> > > is
> >> > > > > a 86 with a r.v. cam and all the computer and emmision stuff
taken
> >> off.
> >> > > > > thanks carmine
> >> > > > >
> >> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> >> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
> >> > > > > > What kind of carb are you running?
> >> > > > > >
> >> > > > > > Do you have the correct gas filter in it and is it in right
side
> >> up?
> >> > > > > >
> >> > > > > > Which vacuum advance are you running?
> >> > > > > >
> >> > > > > > Mike
> >> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >> > > > > > 88 Cherokee 235 BFG AT's
> >> > > > > >
> >> > > > > > carmine colangelo wrote:
> >> > > > > > >
> >> > > > > > > with the gas prices going so high i am tying to get my 1986
> >jeep
> >> cj7
> >> > > 258
> >> > > > > 6
> >> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
> >have
> >> a
> >> > > msd ss
> >> > > > > > > coil, lighter centrifigal advance spring in it. i was
running
> >12
> >> > > degrees
> >> > > > > > > advance on super unleaded and had to go all the way down to
6
> >> > > degrees to
> >> > > > > get
> >> > > > > > > it to stop pinging up hills. but now it is allot harder to
> >start
> >> > > when it
> >> > > > > is
> >> > > > > > > cold. anyone have any ideas what i could do to get it to
start
> >> > > better?
> >> > > > > is 6
> >> > > > > > > degrees to low on the timing? should i put the stock
> >centrifigal
> >> > > spring
> >> > > > > back
> >> > > > > > > in it to not get so much advance at higher rpm's? i just
want
> >to
> >> get
> >> > > the
> >> > > > > > > jeep to run on pump gas and start nice. thanks carmine
> >>
> >>
> >
>

 

I'm pretty sure the vacuum advance on the 258 IS adjustable. I know for sure
the V8 engines were. It's takes a 1/8" allen wrench inserted into the vacuum
nipple to adjust it.



In message <JNsyc.12624$Fd.11018@twister.rdc-kc.rr.com>, "c" wrote:

>Carmine,
>After thinking about this a bit, your RV cam could be building more cylinder
>pressure than the stock cam did. These cams generally have a short duration,
>high lift lobe profile. The extra cylinder pressure could be causing the
>pinging. With that said, you may want to try another approach by using an
>adjustable vacuum advance kit. Crane and others make them, but I don't know
>if they make them for your engine. They do make them for the GM HEI though,
>and this may be a good time to do this swap if you want. The adjustable vac.
>advance will allow you to adjust how much advance, and at what vacuum
>reading it starts. The kits also come with centrifugal weight springs
>similar to what you have installed already. Here is a link to the product:
>
>http://www.cranecams.com/index.php?s...s&lvl=3&prt=29
>
>Chris
>
>
>"carmine colangelo" <carmine7@optonline.net> wrote in message
>news:Njryc.11796$0g3.3315692@news4.srv.hcvlny.cv. net...
>> yeah it sure did dump out some white smoke. even more smoke than the 2
>> stokes i'm used to working on. but i still cant get the timing above 7
>> degrees with out pinging. are there different vacume advances i can bolt
>to
>> the distributer? it seems to me i need more advance on cold starts and
>less
>> timing advance around 2500 rpm's when i am coming up a hill. i'm just not
>> sure how to go about doing it.
>> thanks carmine
>>
>> "Mike Romain" <romainm@sympatico.ca> wrote in message
>> news:40CA3B4C.EAB6C04B@sympatico.ca...
>> > I have seen lots of folks miss that wiring bit, so it is worth checking.
>> >
>> > Pour the ATF slow while keeping it running and be warned it 'will' give
>> > off one massive white smoke cloud.
>> >
>> > Mike
>> >
>> > carmine colangelo wrote:
>> > >
>> > > i traced the purple wire from the ignition module and it goes to the
>> > > distributer. i dont think the computer is even on the jeep any more.
>it
>> was
>> > > removed before i bought it. i will try putting a pint of ATF in it to
>> remove
>> > > some of the carbon
>> > > thanks carmine
>> > >
>> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
>> > > news:40CA1FCD.DC9DABA5@sympatico.ca...
>> > > > Do you physically have the ignition module connected directly to the
>> > > > distributor or does it still go through the computer?
>> > > >
>> > > > The reason I ask is if the computer is still a physical presence,
>then
>> > > > it has gone into limp home mode which messes with the timing advance
>> big
>> > > > time.
>> > > >
>> > > > You can tell by looking at the ignition module, waaayyy down under
>the
>> > > > washer bottle. Check the purple wire coming out of the module. If
>it
>> > > > isn't jumpered to a new wire, you have issues right there. Stock,
>the
>> > > > purple wire goes nowhere, it stops at the first plug.
>> > > >
>> > > > If you remove any emissions stuff, the ignition has to be rewired to
>> > > > work right. It is easy, I always add two new wires rather than mess
>> > > > inside the harness. http://home.sprynet.com/~dale02/ignmods.htm
>> > > >
>> > > > One other thing is carbon build up. That RV cam and running low RPM
>> are
>> > > > really bad for carbon build up. This will cause pinging.
>> > > >
>> > > > I run a pint of ATF slowly down the throat of the carb while keeping
>> it
>> > > > running with my hand on the throttle. It cleans the carbon out
>great.
>> > > > Some folks use a pint of water to do this and say it works well too.
>> > > >
>> > > > Mike
>> > > >
>> > > > carmine colangelo wrote:
>> > > > >
>> > > > > i am running a weber carb with the vacume advance taken off of the
>> base
>> > > of
>> > > > > ther carb.so i would assume this is manifold vacume. as far as i
>> know
>> > > the
>> > > > > vacume advance is stock. i am running a one line fuel filter with
>a
>> > > pressure
>> > > > > regulator. i dont know if stock timing would apply to my jeep
>> because it
>> > > is
>> > > > > a 86 with a r.v. cam and all the computer and emmision stuff taken
>> off.
>> > > > > thanks carmine
>> > > > >
>> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
>> > > > > news:40C9C480.E0C7EDEC@sympatico.ca...
>> > > > > > What kind of carb are you running?
>> > > > > >
>> > > > > > Do you have the correct gas filter in it and is it in right side
>> up?
>> > > > > >
>> > > > > > Which vacuum advance are you running?
>> > > > > >
>> > > > > > Mike
>> > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> > > > > > 88 Cherokee 235 BFG AT's
>> > > > > >
>> > > > > > carmine colangelo wrote:
>> > > > > > >
>> > > > > > > with the gas prices going so high i am tying to get my 1986
>jeep
>> cj7
>> > > 258
>> > > > > 6
>> > > > > > > cyl with a r.v. cam (for low torque) to run on pump gas. i
>have
>> a
>> > > msd ss
>> > > > > > > coil, lighter centrifigal advance spring in it. i was running
>12
>> > > degrees
>> > > > > > > advance on super unleaded and had to go all the way down to 6
>> > > degrees to
>> > > > > get
>> > > > > > > it to stop pinging up hills. but now it is allot harder to
>start
>> > > when it
>> > > > > is
>> > > > > > > cold. anyone have any ideas what i could do to get it to start
>> > > better?
>> > > > > is 6
>> > > > > > > degrees to low on the timing? should i put the stock
>centrifigal
>> > > spring
>> > > > > back
>> > > > > > > in it to not get so much advance at higher rpm's? i just want
>to
>> get
>> > > the
>> > > > > > > jeep to run on pump gas and start nice. thanks carmine
>>
>>
>