When I just did my tailshaft conversion, I also took note of how much
"slop" was in both the front and rear diff while I had my driveshafts
off. I noticed more in my front than my rear, but both were very
minimal.

And on the other end, the output flange on the rear of the transfer
case is solid, while the output flange for the front driveshaft has
some play in it, due to the chain in the t-case.

I don't know how to measure the slack on the rear diff you are
referring to, except to just say it is very minimal for me. Hope yours
is nothing serious!

I would also note, though, the wrangler's gas pedal is pretty twitchy
in my experience, and can be very prone to that "bucking" when quickly
pressing or releasing the gas, especially in lower gears, even with a
rock solid diff. But you sound like you know your stuff (referring to
the backlash and such), so I'm going to assume your issue is not just
that simple.

"Fred W." <Fred.Wills@allspam myrealbox.com> wrote in message news:<Sdwsb.247$m84.192252@news1.news.adelphia.net >...
> Jeep-meisters,
>
> I bought a '98 TJ Sport, currently lock stock, w/ 54k miles on it. It seems
> to me to have too much play in the rear drive line. This is felt mostly as
> drive-line snap when running along and decelerating and then accelerating.
> It is especially bothersome when running in a low gear at low speeds, such
> as when off-roading. It makes it want to buck around under these
> conditions. Obviously something I want to eliminate.
>
> If I put the t-case in neutral and manually rotate the drive shaft by hand,
> about how much rotation should I get? On mine, the rear driveshaft turns
> significantly more than the front one, which leads me to believe that the
> P.O. has messed around in the rearend (ring, pinion, diff, ??) and not
> shimmed things up right afterward.
>
> I have the factory manuals which go into setting the preload and the other
> differential shims up, but nowhere does it mention how much lash is normal
> as viewed from outside.
>
> Any thoughts?
>
> TIA,
> Fred W.
> remove allspam from address to reply
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.538 / Virus Database: 333 - Release Date: 11/10/2003

 

When I just did my tailshaft conversion, I also took note of how much
"slop" was in both the front and rear diff while I had my driveshafts
off. I noticed more in my front than my rear, but both were very
minimal.

And on the other end, the output flange on the rear of the transfer
case is solid, while the output flange for the front driveshaft has
some play in it, due to the chain in the t-case.

I don't know how to measure the slack on the rear diff you are
referring to, except to just say it is very minimal for me. Hope yours
is nothing serious!

I would also note, though, the wrangler's gas pedal is pretty twitchy
in my experience, and can be very prone to that "bucking" when quickly
pressing or releasing the gas, especially in lower gears, even with a
rock solid diff. But you sound like you know your stuff (referring to
the backlash and such), so I'm going to assume your issue is not just
that simple.

"Fred W." <Fred.Wills@allspam myrealbox.com> wrote in message news:<Sdwsb.247$m84.192252@news1.news.adelphia.net >...
> Jeep-meisters,
>
> I bought a '98 TJ Sport, currently lock stock, w/ 54k miles on it. It seems
> to me to have too much play in the rear drive line. This is felt mostly as
> drive-line snap when running along and decelerating and then accelerating.
> It is especially bothersome when running in a low gear at low speeds, such
> as when off-roading. It makes it want to buck around under these
> conditions. Obviously something I want to eliminate.
>
> If I put the t-case in neutral and manually rotate the drive shaft by hand,
> about how much rotation should I get? On mine, the rear driveshaft turns
> significantly more than the front one, which leads me to believe that the
> P.O. has messed around in the rearend (ring, pinion, diff, ??) and not
> shimmed things up right afterward.
>
> I have the factory manuals which go into setting the preload and the other
> differential shims up, but nowhere does it mention how much lash is normal
> as viewed from outside.
>
> Any thoughts?
>
> TIA,
> Fred W.
> remove allspam from address to reply
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.538 / Virus Database: 333 - Release Date: 11/10/2003

 

When I just did my tailshaft conversion, I also took note of how much
"slop" was in both the front and rear diff while I had my driveshafts
off. I noticed more in my front than my rear, but both were very
minimal.

And on the other end, the output flange on the rear of the transfer
case is solid, while the output flange for the front driveshaft has
some play in it, due to the chain in the t-case.

I don't know how to measure the slack on the rear diff you are
referring to, except to just say it is very minimal for me. Hope yours
is nothing serious!

I would also note, though, the wrangler's gas pedal is pretty twitchy
in my experience, and can be very prone to that "bucking" when quickly
pressing or releasing the gas, especially in lower gears, even with a
rock solid diff. But you sound like you know your stuff (referring to
the backlash and such), so I'm going to assume your issue is not just
that simple.

"Fred W." <Fred.Wills@allspam myrealbox.com> wrote in message news:<Sdwsb.247$m84.192252@news1.news.adelphia.net >...
> Jeep-meisters,
>
> I bought a '98 TJ Sport, currently lock stock, w/ 54k miles on it. It seems
> to me to have too much play in the rear drive line. This is felt mostly as
> drive-line snap when running along and decelerating and then accelerating.
> It is especially bothersome when running in a low gear at low speeds, such
> as when off-roading. It makes it want to buck around under these
> conditions. Obviously something I want to eliminate.
>
> If I put the t-case in neutral and manually rotate the drive shaft by hand,
> about how much rotation should I get? On mine, the rear driveshaft turns
> significantly more than the front one, which leads me to believe that the
> P.O. has messed around in the rearend (ring, pinion, diff, ??) and not
> shimmed things up right afterward.
>
> I have the factory manuals which go into setting the preload and the other
> differential shims up, but nowhere does it mention how much lash is normal
> as viewed from outside.
>
> Any thoughts?
>
> TIA,
> Fred W.
> remove allspam from address to reply
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.538 / Virus Database: 333 - Release Date: 11/10/2003

 

You have the limited slip traction device in the rear.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Bob wrote:
>
> When I just did my tailshaft conversion, I also took note of how much
> "slop" was in both the front and rear diff while I had my driveshafts
> off. I noticed more in my front than my rear, but both were very
> minimal.
>
> And on the other end, the output flange on the rear of the transfer
> case is solid, while the output flange for the front driveshaft has
> some play in it, due to the chain in the t-case.
>
> I don't know how to measure the slack on the rear diff you are
> referring to, except to just say it is very minimal for me. Hope yours
> is nothing serious!
>
> I would also note, though, the wrangler's gas pedal is pretty twitchy
> in my experience, and can be very prone to that "bucking" when quickly
> pressing or releasing the gas, especially in lower gears, even with a
> rock solid diff. But you sound like you know your stuff (referring to
> the backlash and such), so I'm going to assume your issue is not just
> that simple.

 

You have the limited slip traction device in the rear.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Bob wrote:
>
> When I just did my tailshaft conversion, I also took note of how much
> "slop" was in both the front and rear diff while I had my driveshafts
> off. I noticed more in my front than my rear, but both were very
> minimal.
>
> And on the other end, the output flange on the rear of the transfer
> case is solid, while the output flange for the front driveshaft has
> some play in it, due to the chain in the t-case.
>
> I don't know how to measure the slack on the rear diff you are
> referring to, except to just say it is very minimal for me. Hope yours
> is nothing serious!
>
> I would also note, though, the wrangler's gas pedal is pretty twitchy
> in my experience, and can be very prone to that "bucking" when quickly
> pressing or releasing the gas, especially in lower gears, even with a
> rock solid diff. But you sound like you know your stuff (referring to
> the backlash and such), so I'm going to assume your issue is not just
> that simple.

 

You have the limited slip traction device in the rear.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Bob wrote:
>
> When I just did my tailshaft conversion, I also took note of how much
> "slop" was in both the front and rear diff while I had my driveshafts
> off. I noticed more in my front than my rear, but both were very
> minimal.
>
> And on the other end, the output flange on the rear of the transfer
> case is solid, while the output flange for the front driveshaft has
> some play in it, due to the chain in the t-case.
>
> I don't know how to measure the slack on the rear diff you are
> referring to, except to just say it is very minimal for me. Hope yours
> is nothing serious!
>
> I would also note, though, the wrangler's gas pedal is pretty twitchy
> in my experience, and can be very prone to that "bucking" when quickly
> pressing or releasing the gas, especially in lower gears, even with a
> rock solid diff. But you sound like you know your stuff (referring to
> the backlash and such), so I'm going to assume your issue is not just
> that simple.

 

Bill; Is that not also true of a locker acting that way?

Jimmie;

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:3FB2BBB2.7E18EE0F@***.net...
> You have the limited slip traction device in the rear.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Bob wrote:
> >
> > When I just did my tailshaft conversion, I also took note of how much
> > "slop" was in both the front and rear diff while I had my driveshafts
> > off. I noticed more in my front than my rear, but both were very
> > minimal.
> >
> > And on the other end, the output flange on the rear of the transfer
> > case is solid, while the output flange for the front driveshaft has
> > some play in it, due to the chain in the t-case.
> >
> > I don't know how to measure the slack on the rear diff you are
> > referring to, except to just say it is very minimal for me. Hope yours
> > is nothing serious!
> >
> > I would also note, though, the wrangler's gas pedal is pretty twitchy
> > in my experience, and can be very prone to that "bucking" when quickly
> > pressing or releasing the gas, especially in lower gears, even with a
> > rock solid diff. But you sound like you know your stuff (referring to
> > the backlash and such), so I'm going to assume your issue is not just
> > that simple.

 

Bill; Is that not also true of a locker acting that way?

Jimmie;

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:3FB2BBB2.7E18EE0F@***.net...
> You have the limited slip traction device in the rear.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Bob wrote:
> >
> > When I just did my tailshaft conversion, I also took note of how much
> > "slop" was in both the front and rear diff while I had my driveshafts
> > off. I noticed more in my front than my rear, but both were very
> > minimal.
> >
> > And on the other end, the output flange on the rear of the transfer
> > case is solid, while the output flange for the front driveshaft has
> > some play in it, due to the chain in the t-case.
> >
> > I don't know how to measure the slack on the rear diff you are
> > referring to, except to just say it is very minimal for me. Hope yours
> > is nothing serious!
> >
> > I would also note, though, the wrangler's gas pedal is pretty twitchy
> > in my experience, and can be very prone to that "bucking" when quickly
> > pressing or releasing the gas, especially in lower gears, even with a
> > rock solid diff. But you sound like you know your stuff (referring to
> > the backlash and such), so I'm going to assume your issue is not just
> > that simple.

 

Bill; Is that not also true of a locker acting that way?

Jimmie;

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:3FB2BBB2.7E18EE0F@***.net...
> You have the limited slip traction device in the rear.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Bob wrote:
> >
> > When I just did my tailshaft conversion, I also took note of how much
> > "slop" was in both the front and rear diff while I had my driveshafts
> > off. I noticed more in my front than my rear, but both were very
> > minimal.
> >
> > And on the other end, the output flange on the rear of the transfer
> > case is solid, while the output flange for the front driveshaft has
> > some play in it, due to the chain in the t-case.
> >
> > I don't know how to measure the slack on the rear diff you are
> > referring to, except to just say it is very minimal for me. Hope yours
> > is nothing serious!
> >
> > I would also note, though, the wrangler's gas pedal is pretty twitchy
> > in my experience, and can be very prone to that "bucking" when quickly
> > pressing or releasing the gas, especially in lower gears, even with a
> > rock solid diff. But you sound like you know your stuff (referring to
> > the backlash and such), so I'm going to assume your issue is not just
> > that simple.

 

There's a lot of play in the Detroit Lockers I've played with, where
the clutches in a limited slip is under a lot of pressure and won't give
at all, unless under the weight of a two ton vehicle.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

CJimmie in Iowa wrote:
>
> Bill; Is that not also true of a locker acting that way?
>
> Jimmie;