Can you adjust the timing on a 95 2.5l 4-banger?
 

Anyone know if I can advance the timing on this engine?

--
Daren McMorris
95 YJ
4 Banger with Header and Exhaust, 4.0l Throttle Body
Adjustable MAP Sensor, MSD 6A
Dana 44's with 5.38 gears Detroit Rear, Lockright Front
Rino tub, Throttle, Dual Batteries, 35" SSR's, On Board Air

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

what about the turbo city adjustable timing sensor they sell to go along
with their adjustable map sensor?

Daren


"Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in message
news:bgneci$qn2kb$1@ID-147790.news.uni-berlin.de...
> No, you can't.
>
> Earle
>
> "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> news:koEXa.385774$jp.11080853@twister.southeast.rr .com...
> > Anyone know if I can advance the timing on this engine?
> >
> > --
> > Daren McMorris
> > 95 YJ
> > 4 Banger with Header and Exhaust, 4.0l Throttle Body
> > Adjustable MAP Sensor, MSD 6A
> > Dana 44's with 5.38 gears Detroit Rear, Lockright Front
> > Rino tub, Throttle, Dual Batteries, 35" SSR's, On Board Air
> >
> >
>
>

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

I suppose that you mean this

http://www.turbocity.com/JeepStagePowerKits.htm

Take a look at the length of the oval mounting hole on the new timing
sensor. How many degrees do you think that is?

Earle

"D McMorris" <dmcmorris@nc.rr.com> wrote in message
news:8PiZa.1479$mB5.211005@twister.southeast.rr.co m...
> what about the turbo city adjustable timing sensor they sell to go along
> with their adjustable map sensor?
>
> Daren
>
>
> "Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in message
> news:bgneci$qn2kb$1@ID-147790.news.uni-berlin.de...
> > No, you can't.
> >
> > Earle
> >
> > "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> > news:koEXa.385774$jp.11080853@twister.southeast.rr .com...
> > > Anyone know if I can advance the timing on this engine?
> > >
> > > --
> > > Daren McMorris
> > > 95 YJ
> > > 4 Banger with Header and Exhaust, 4.0l Throttle Body
> > > Adjustable MAP Sensor, MSD 6A
> > > Dana 44's with 5.38 gears Detroit Rear, Lockright Front
> > > Rino tub, Throttle, Dual Batteries, 35" SSR's, On Board Air
> > >
> > >
> >
> >
>
>

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

It's "supposed" to be around 3-4 degrees. Is that what you really achieve?
Don't know, have not talked to anyone who has tried it....thus the reason
for my post.

Daren

"Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in message
news:bh4eqj$tcisu$1@ID-147790.news.uni-berlin.de...
> I suppose that you mean this
>
> http://www.turbocity.com/JeepStagePowerKits.htm
>
> Take a look at the length of the oval mounting hole on the new timing
> sensor. How many degrees do you think that is?
>
> Earle
>
> "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> news:8PiZa.1479$mB5.211005@twister.southeast.rr.co m...
> > what about the turbo city adjustable timing sensor they sell to go along
> > with their adjustable map sensor?
> >
> > Daren
> >
> >
> > "Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in
message
> > news:bgneci$qn2kb$1@ID-147790.news.uni-berlin.de...
> > > No, you can't.
> > >
> > > Earle
> > >
> > > "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> > > news:koEXa.385774$jp.11080853@twister.southeast.rr .com...
> > > > Anyone know if I can advance the timing on this engine?
> > > >
> > > > --
> > > > Daren McMorris
> > > > 95 YJ
> > > > 4 Banger with Header and Exhaust, 4.0l Throttle Body
> > > > Adjustable MAP Sensor, MSD 6A
> > > > Dana 44's with 5.38 gears Detroit Rear, Lockright Front
> > > > Rino tub, Throttle, Dual Batteries, 35" SSR's, On Board Air
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

Hi Daren,
You may able to double check it by pulling the jumper plug that
puts the computer into the limp mode, it should be somewhere up on the
firewall, on it's own loose wire, and putting a light on it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

D McMorris wrote:
>
> It's "supposed" to be around 3-4 degrees. Is that what you really achieve?
> Don't know, have not talked to anyone who has tried it....thus the reason
> for my post.
>
> Daren

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

Thanks Bill.

Do you mean to advance the timing and then pull the wire and put a light on
it? By the way, over the years I've heard allot of talk about the advantage
of advancing the timing a few degrees. What do this buy you? Sorry for the
dumb question.....

Daren

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F367C46.448355CE@cox.net...
> Hi Daren,
> You may able to double check it by pulling the jumper plug that
> puts the computer into the limp mode, it should be somewhere up on the
> firewall, on it's own loose wire, and putting a light on it.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> D McMorris wrote:
> >
> > It's "supposed" to be around 3-4 degrees. Is that what you really
achieve?
> > Don't know, have not talked to anyone who has tried it....thus the
reason
> > for my post.
> >
> > Daren

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

Bill,
The distributor on the 2.5l is keyed, so turbo city sells the "adjustable
timing sensor". By re-positioning the sensor it advances the timing by 3-4
degrees...according to the manufacture. By advancing the timing by 4
degrees, what does this do for you?

Daren

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F3701D2.C088A765@cox.net...
> Hi Daren,
> Like others have said you can't change the timing, except by buying
> a new chip and programing it. You may turn the distributor until it
> shorts to the next cylinder and nothing in timing will change. The plug
> is to be used during SMOG checks to disable the computer to double check
> the initial timing is correct.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> D McMorris wrote:
> >
> > Thanks Bill.
> >
> > Do you mean to advance the timing and then pull the wire and put a light
on
> > it? By the way, over the years I've heard allot of talk about the
advantage
> > of advancing the timing a few degrees. What do this buy you? Sorry for
the
> > dumb question.....
> >
> > Daren

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

you see guys, this is where we differ. I was told that the adjustable MAP
sensor was also a waste...but gone is the "flat spot" in the RPM band around
1500. Also I want to correct the statement I made about this sensor. It's
actually an adjustable crank position sensor. Now I'll admit that I do not
have the infinite knowledge that you guys do, but I can tell you that there
is a seat of the pants difference with the MAP sensor. So if the adjustable
crank position sensor will make a difference, then I'll give it a shot. No
one makes a computer chip for the 95 2.5l, however by adding these two
sensors you are getting some of the same results. My reason for this post
was just to see if someone out there had tired it. This news group has
always been an excellent source of information. When I did my Dana 44 swap,
many questions were answered here.

Daren


"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F37ED83.EE5E4A3A@cox.net...
> Ditto.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Earle Horton wrote:
> >
> > It makes you "ping" on regular gas, and may give you more power on
premium.
> > What you really want is to be able to modify the advance curve. There
is no
> > way to do that with this engine short of reprogramming the computer.
Unless
> > you happen to have the equipment for doing that lying around your shop,
take
> > my advice and forget about it.
> >
> > Earle

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

Because at this point "the possibilities" involve spending ever increasing
amounts of money on that poor little 2.5 liter four banger for smaller and
smaller increases in power. Put the damn adjustable crank position sensor
in it, switch to premium fuel, and stop wasting my incredibly valuable time.
That is the last cheap upgrade that is available. If you really want to be
honest with yourself, put it on a chassis dynamometer and find out what is
really going on with it.

Reality check: You have a 2.5 liter push rod engine that red lines at 5,000
rpm, pushing around a three thousand pound plus glorified mail delivery
wagon. If you have a genuine need for speed like some of the people in this
newsgroup, this engine and vehicle are not going to satisfy it.

You might try to install another distributor and a conventional coil,
bypassing the computer controlled spark advance. Then you could have all
the spark advance you want. There are some more hints in the Jeep
performance book from Mopar. You are trying to make a silk purse out of a
sow's ear though.

Earle

"D McMorris" <dmcmorris@nc.rr.com> wrote in message
news:jmWZa.12143$Pb7.436644@twister.southeast.rr.c om...
> Earl,
> One more thing...why "take my advice and forget about it"? Come on,
someone
> has to be willing to explore the possibilities. ;)
>
> Daren
>
> "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> news:RNVZa.25845$VR6.507749@twister.southeast.rr.c om...
> > you see guys, this is where we differ. I was told that the adjustable
MAP
> > sensor was also a waste...but gone is the "flat spot" in the RPM band
> around
> > 1500. Also I want to correct the statement I made about this sensor.
> It's
> > actually an adjustable crank position sensor. Now I'll admit that I do
> not
> > have the infinite knowledge that you guys do, but I can tell you that
> there
> > is a seat of the pants difference with the MAP sensor. So if the
> adjustable
> > crank position sensor will make a difference, then I'll give it a shot.
> No
> > one makes a computer chip for the 95 2.5l, however by adding these two
> > sensors you are getting some of the same results. My reason for this
post
> > was just to see if someone out there had tired it. This news group has
> > always been an excellent source of information. When I did my Dana 44
> swap,
> > many questions were answered here.
> >
> > Daren
> >
> >
> > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message
> > news:3F37ED83.EE5E4A3A@cox.net...
> > > Ditto.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > Earle Horton wrote:
> > > >
> > > > It makes you "ping" on regular gas, and may give you more power on
> > premium.
> > > > What you really want is to be able to modify the advance curve.
There
> > is no
> > > > way to do that with this engine short of reprogramming the computer.
> > Unless
> > > > you happen to have the equipment for doing that lying around your
> shop,
> > take
> > > > my advice and forget about it.
> > > >
> > > > Earle
> >
> >
>
>

Re: Can you adjust the timing on a 95 2.5l 4-banger?
 

Earle,

See it nonsense like that is uncalled for...completely uncalled for. Want
me to quite wasting you time, then you have the right not to read my posts.
Now I could get ugly here and tell you that you are acting like an ass, but
I don't think this news group is the place for that. Just because you think
that you walk on water, does not mean you do.

Daren

"Earle Horton" <enfermero_diabolico@registerednurses.com> wrote in message
news:bh9e2b$v4vbm$1@ID-147790.news.uni-berlin.de...
> Because at this point "the possibilities" involve spending ever increasing
> amounts of money on that poor little 2.5 liter four banger for smaller and
> smaller increases in power. Put the damn adjustable crank position sensor
> in it, switch to premium fuel, and stop wasting my incredibly valuable
time.
> That is the last cheap upgrade that is available. If you really want to
be
> honest with yourself, put it on a chassis dynamometer and find out what is
> really going on with it.
>
> Reality check: You have a 2.5 liter push rod engine that red lines at
5,000
> rpm, pushing around a three thousand pound plus glorified mail delivery
> wagon. If you have a genuine need for speed like some of the people in
this
> newsgroup, this engine and vehicle are not going to satisfy it.
>
> You might try to install another distributor and a conventional coil,
> bypassing the computer controlled spark advance. Then you could have all
> the spark advance you want. There are some more hints in the Jeep
> performance book from Mopar. You are trying to make a silk purse out of a
> sow's ear though.
>
> Earle
>
> "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> news:jmWZa.12143$Pb7.436644@twister.southeast.rr.c om...
> > Earl,
> > One more thing...why "take my advice and forget about it"? Come on,
> someone
> > has to be willing to explore the possibilities. ;)
> >
> > Daren
> >
> > "D McMorris" <dmcmorris@nc.rr.com> wrote in message
> > news:RNVZa.25845$VR6.507749@twister.southeast.rr.c om...
> > > you see guys, this is where we differ. I was told that the adjustable
> MAP
> > > sensor was also a waste...but gone is the "flat spot" in the RPM band
> > around
> > > 1500. Also I want to correct the statement I made about this sensor.
> > It's
> > > actually an adjustable crank position sensor. Now I'll admit that I
do
> > not
> > > have the infinite knowledge that you guys do, but I can tell you that
> > there
> > > is a seat of the pants difference with the MAP sensor. So if the
> > adjustable
> > > crank position sensor will make a difference, then I'll give it a
shot.
> > No
> > > one makes a computer chip for the 95 2.5l, however by adding these two
> > > sensors you are getting some of the same results. My reason for this
> post
> > > was just to see if someone out there had tired it. This news group
has
> > > always been an excellent source of information. When I did my Dana 44
> > swap,
> > > many questions were answered here.
> > >
> > > Daren
> > >
> > >
> > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message
> > > news:3F37ED83.EE5E4A3A@cox.net...
> > > > Ditto.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:-------------------- http://www.----------.com/
> > > >
> > > > Earle Horton wrote:
> > > > >
> > > > > It makes you "ping" on regular gas, and may give you more power on
> > > premium.
> > > > > What you really want is to be able to modify the advance curve.
> There
> > > is no
> > > > > way to do that with this engine short of reprogramming the
computer.
> > > Unless
> > > > > you happen to have the equipment for doing that lying around your
> > shop,
> > > take
> > > > > my advice and forget about it.
> > > > >
> > > > > Earle
> > >
> > >
> >
> >
>
>