Re: Differential gear change question
 

Just buy the 3.73's for the front. Yes, it is more expensive. BUT, if you
screw up the install, the TJ is still driveable, and its an upgrade. Don't
do a bunch of extra work for no improvement! Keep the LSD and the 3.73's,
upgrade the front gears and be happy.

Carl


"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898D4AB84B84someconundrum@216.196.97.131. ..
> Jeff Strickland writes:
>
>> You can swap the 3.07 carrier and ring gear into the pumpkin that
>> now houses the 3.73 carrier and gear.
>
> That's what I'm trying to confirm.
>
> I think the Chrysler manual calls it the "differential case", not the
> "carrier". The pumpkin they call the "axle housing".

Re: Differential gear change question
 

Just buy the 3.73's for the front. Yes, it is more expensive. BUT, if you
screw up the install, the TJ is still driveable, and its an upgrade. Don't
do a bunch of extra work for no improvement! Keep the LSD and the 3.73's,
upgrade the front gears and be happy.

Carl


"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898D4AB84B84someconundrum@216.196.97.131. ..
> Jeff Strickland writes:
>
>> You can swap the 3.07 carrier and ring gear into the pumpkin that
>> now houses the 3.73 carrier and gear.
>
> That's what I'm trying to confirm.
>
> I think the Chrysler manual calls it the "differential case", not the
> "carrier". The pumpkin they call the "axle housing".

Re: Differential gear change question
 

"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898D4AB84B84someconundrum@216.196.97.131. ..
> Jeff Strickland writes:
>
>> You can swap the 3.07 carrier and ring gear into the pumpkin that
>> now houses the 3.73 carrier and gear.
>
> That's what I'm trying to confirm.
>
> I think the Chrysler manual calls it the "differential case", not the
> "carrier". The pumpkin they call the "axle housing".


Whatever. The carrier holds the ring gear and the pumpkin holds everything
including the carrier.

Re: Differential gear change question
 

"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898D4AB84B84someconundrum@216.196.97.131. ..
> Jeff Strickland writes:
>
>> You can swap the 3.07 carrier and ring gear into the pumpkin that
>> now houses the 3.73 carrier and gear.
>
> That's what I'm trying to confirm.
>
> I think the Chrysler manual calls it the "differential case", not the
> "carrier". The pumpkin they call the "axle housing".


Whatever. The carrier holds the ring gear and the pumpkin holds everything
including the carrier.

Re: Differential gear change question
 

"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898D4AB84B84someconundrum@216.196.97.131. ..
> Jeff Strickland writes:
>
>> You can swap the 3.07 carrier and ring gear into the pumpkin that
>> now houses the 3.73 carrier and gear.
>
> That's what I'm trying to confirm.
>
> I think the Chrysler manual calls it the "differential case", not the
> "carrier". The pumpkin they call the "axle housing".


Whatever. The carrier holds the ring gear and the pumpkin holds everything
including the carrier.

Re: Differential gear change question
 

JimG writes:

> One with that ability would not be asking some of
> these questions (difference between carriers, housings, and bearings).

You must have misunderstood my questions if you think they suggest a
lack of ability.

Usenet is such a wonderful place to ask questions. Not only do you get
technical advice, you also get the very core of your being picked apart
and analyzed.

There are various cases for various ranges of gear ratios. I was simply
asking if the bearing seats and other features in the axle housings are
likewise varied and incompatible across gear ratios or ranges of gear
ratios, since I have a swap in mind and don't want to tear into the
differential to install a gear set that could turn out to be
incompatible. This is just an arbitrary fact of the designs that can't
be known except by revelation or a costly trial and error.

In short, "Does a case with a 3.07 ring gear directly drop into an axle
housing presently holding a case with 3.73 ring gear". Because I am
told that these two cases won't accept the other's ring gear.

One has to be wary about advice using various terms for parts, words
that differ from the manufacturer's, which are themselves confusing. My
questioning of non-standard terminology doesn't mean I don't understand
what's going on or what's involved, it just means I want to make sure
the advice is correct.

Re: Differential gear change question
 

JimG writes:

> One with that ability would not be asking some of
> these questions (difference between carriers, housings, and bearings).

You must have misunderstood my questions if you think they suggest a
lack of ability.

Usenet is such a wonderful place to ask questions. Not only do you get
technical advice, you also get the very core of your being picked apart
and analyzed.

There are various cases for various ranges of gear ratios. I was simply
asking if the bearing seats and other features in the axle housings are
likewise varied and incompatible across gear ratios or ranges of gear
ratios, since I have a swap in mind and don't want to tear into the
differential to install a gear set that could turn out to be
incompatible. This is just an arbitrary fact of the designs that can't
be known except by revelation or a costly trial and error.

In short, "Does a case with a 3.07 ring gear directly drop into an axle
housing presently holding a case with 3.73 ring gear". Because I am
told that these two cases won't accept the other's ring gear.

One has to be wary about advice using various terms for parts, words
that differ from the manufacturer's, which are themselves confusing. My
questioning of non-standard terminology doesn't mean I don't understand
what's going on or what's involved, it just means I want to make sure
the advice is correct.

Re: Differential gear change question
 

JimG writes:

> One with that ability would not be asking some of
> these questions (difference between carriers, housings, and bearings).

You must have misunderstood my questions if you think they suggest a
lack of ability.

Usenet is such a wonderful place to ask questions. Not only do you get
technical advice, you also get the very core of your being picked apart
and analyzed.

There are various cases for various ranges of gear ratios. I was simply
asking if the bearing seats and other features in the axle housings are
likewise varied and incompatible across gear ratios or ranges of gear
ratios, since I have a swap in mind and don't want to tear into the
differential to install a gear set that could turn out to be
incompatible. This is just an arbitrary fact of the designs that can't
be known except by revelation or a costly trial and error.

In short, "Does a case with a 3.07 ring gear directly drop into an axle
housing presently holding a case with 3.73 ring gear". Because I am
told that these two cases won't accept the other's ring gear.

One has to be wary about advice using various terms for parts, words
that differ from the manufacturer's, which are themselves confusing. My
questioning of non-standard terminology doesn't mean I don't understand
what's going on or what's involved, it just means I want to make sure
the advice is correct.

Re: Differential gear change question
 

"Richard J Kinch" wrote in message...
> You must have misunderstood my questions if you think they suggest a
> lack of ability.

I understand your questions completely, and they have been answered here
adequately.

> There are various cases for various ranges of gear ratios.

Called carriers in every shop manual and parts house I have dealt with.

> I was simply asking if the bearing seats and other features in the axle
> housings are
> likewise varied and incompatible across gear ratios or ranges of gear
> ratios, since I have a swap in mind and don't want to tear into the
> differential to install a gear set that could turn out to be
> incompatible.

IMHO, a mechanic capable of gear setup would know that the bearing sets and
housings are the same regardless of gear ratio.

> This is just an arbitrary fact of the designs that can't
> be known except by revelation or a costly trial and error.

Not rocket science.

> In short, "Does a case with a 3.07 ring gear directly drop into an axle
> housing presently holding a case with 3.73 ring gear". Because I am
> told that these two cases won't accept the other's ring gear.

Correct. The cutoff is between 3.31 and 3.54 for the DANA 35. The higher
the numerical ratio the thicker the ring gear and therefore the mounting
flange on the carrier varies to compensate.

> One has to be wary about advice using various terms for parts, words
> that differ from the manufacturer's, which are themselves confusing. My
> questioning of non-standard terminology doesn't mean I don't understand
> what's going on or what's involved, it just means I want to make sure
> the advice is correct.

Again, no insult intended.
All that said, I have yet to attempt setting up my own gears, I have them
done by professionals.

Re: Differential gear change question
 

"Richard J Kinch" wrote in message...
> You must have misunderstood my questions if you think they suggest a
> lack of ability.

I understand your questions completely, and they have been answered here
adequately.

> There are various cases for various ranges of gear ratios.

Called carriers in every shop manual and parts house I have dealt with.

> I was simply asking if the bearing seats and other features in the axle
> housings are
> likewise varied and incompatible across gear ratios or ranges of gear
> ratios, since I have a swap in mind and don't want to tear into the
> differential to install a gear set that could turn out to be
> incompatible.

IMHO, a mechanic capable of gear setup would know that the bearing sets and
housings are the same regardless of gear ratio.

> This is just an arbitrary fact of the designs that can't
> be known except by revelation or a costly trial and error.

Not rocket science.

> In short, "Does a case with a 3.07 ring gear directly drop into an axle
> housing presently holding a case with 3.73 ring gear". Because I am
> told that these two cases won't accept the other's ring gear.

Correct. The cutoff is between 3.31 and 3.54 for the DANA 35. The higher
the numerical ratio the thicker the ring gear and therefore the mounting
flange on the carrier varies to compensate.

> One has to be wary about advice using various terms for parts, words
> that differ from the manufacturer's, which are themselves confusing. My
> questioning of non-standard terminology doesn't mean I don't understand
> what's going on or what's involved, it just means I want to make sure
> the advice is correct.

Again, no insult intended.
All that said, I have yet to attempt setting up my own gears, I have them
done by professionals.