Differential gear change question
 

I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
bent axle tube from a collision. The donor axle was unfortunately
configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
original that was 3.07 with no locker. I want to change the old ring and
pinion into the new differential case to get back to 3.07, otherwise we
have no 4WD due to the mismatch between front and rear.

My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
same, so that I can just fit all the old moving parts from the old 3.07
assembly into the new 3.76 housing. I don't want to open up the cover on
the new assembly if the bearing seats or something are incompatible. If I
can just swap, what one-time items will I need, such as the crush sleeve,
ring bolts, and/or shims?

I've disassembled the old assembly, including taking out the differential
case out of the housing with a ------er tool, per the manual.

Re: Differential gear change question
 

the housing should be the same but your carrier is different!

--

"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898A3BB49EFDsomeconundrum@216.196.97.131. ..
>I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
> bent axle tube from a collision. The donor axle was unfortunately
> configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
> original that was 3.07 with no locker. I want to change the old ring and
> pinion into the new differential case to get back to 3.07, otherwise we
> have no 4WD due to the mismatch between front and rear.
>
> My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
> same, so that I can just fit all the old moving parts from the old 3.07
> assembly into the new 3.76 housing. I don't want to open up the cover on
> the new assembly if the bearing seats or something are incompatible. If I
> can just swap, what one-time items will I need, such as the crush sleeve,
> ring bolts, and/or shims?
>
> I've disassembled the old assembly, including taking out the differential
> case out of the housing with a ------er tool, per the manual.

Re: Differential gear change question
 

the housing should be the same but your carrier is different!

--

"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898A3BB49EFDsomeconundrum@216.196.97.131. ..
>I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
> bent axle tube from a collision. The donor axle was unfortunately
> configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
> original that was 3.07 with no locker. I want to change the old ring and
> pinion into the new differential case to get back to 3.07, otherwise we
> have no 4WD due to the mismatch between front and rear.
>
> My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
> same, so that I can just fit all the old moving parts from the old 3.07
> assembly into the new 3.76 housing. I don't want to open up the cover on
> the new assembly if the bearing seats or something are incompatible. If I
> can just swap, what one-time items will I need, such as the crush sleeve,
> ring bolts, and/or shims?
>
> I've disassembled the old assembly, including taking out the differential
> case out of the housing with a ------er tool, per the manual.

Re: Differential gear change question
 

the housing should be the same but your carrier is different!

--

"Richard J Kinch" <kinch@truetex.com> wrote in message
news:Xns9898A3BB49EFDsomeconundrum@216.196.97.131. ..
>I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
> bent axle tube from a collision. The donor axle was unfortunately
> configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
> original that was 3.07 with no locker. I want to change the old ring and
> pinion into the new differential case to get back to 3.07, otherwise we
> have no 4WD due to the mismatch between front and rear.
>
> My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
> same, so that I can just fit all the old moving parts from the old 3.07
> assembly into the new 3.76 housing. I don't want to open up the cover on
> the new assembly if the bearing seats or something are incompatible. If I
> can just swap, what one-time items will I need, such as the crush sleeve,
> ring bolts, and/or shims?
>
> I've disassembled the old assembly, including taking out the differential
> case out of the housing with a ------er tool, per the manual.

Re: Differential gear change question
 

Jeeper writes:

> the housing should be the same but your carrier is different!

So I can swap the whole differential (what you're calling the carrier) into
the new housing? The bearing seats in the housing aren't different?

Re: Differential gear change question
 

Jeeper writes:

> the housing should be the same but your carrier is different!

So I can swap the whole differential (what you're calling the carrier) into
the new housing? The bearing seats in the housing aren't different?

Re: Differential gear change question
 

Jeeper writes:

> the housing should be the same but your carrier is different!

So I can swap the whole differential (what you're calling the carrier) into
the new housing? The bearing seats in the housing aren't different?

Re: Differential gear change question
 

I would have went the other way... change the front to 3.76... better
gearing and a limited slip in the rear!

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift
Warn X8000i
"Richard J Kinch" wrote in message...
>I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
> bent axle tube from a collision. The donor axle was unfortunately
> configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
> original that was 3.07 with no locker. I want to change the old ring and
> pinion into the new differential case to get back to 3.07, otherwise we
> have no 4WD due to the mismatch between front and rear.
>
> My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
> same, so that I can just fit all the old moving parts from the old 3.07
> assembly into the new 3.76 housing. I don't want to open up the cover on
> the new assembly if the bearing seats or something are incompatible. If I
> can just swap, what one-time items will I need, such as the crush sleeve,
> ring bolts, and/or shims?
>
> I've disassembled the old assembly, including taking out the differential
> case out of the housing with a ------er tool, per the manual.

Re: Differential gear change question
 

I would have went the other way... change the front to 3.76... better
gearing and a limited slip in the rear!

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift
Warn X8000i
"Richard J Kinch" wrote in message...
>I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
> bent axle tube from a collision. The donor axle was unfortunately
> configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
> original that was 3.07 with no locker. I want to change the old ring and
> pinion into the new differential case to get back to 3.07, otherwise we
> have no 4WD due to the mismatch between front and rear.
>
> My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
> same, so that I can just fit all the old moving parts from the old 3.07
> assembly into the new 3.76 housing. I don't want to open up the cover on
> the new assembly if the bearing seats or something are incompatible. If I
> can just swap, what one-time items will I need, such as the crush sleeve,
> ring bolts, and/or shims?
>
> I've disassembled the old assembly, including taking out the differential
> case out of the housing with a ------er tool, per the manual.

Re: Differential gear change question
 

I would have went the other way... change the front to 3.76... better
gearing and a limited slip in the rear!

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift
Warn X8000i
"Richard J Kinch" wrote in message...
>I swapped out a Dana 35 rear axle and differential on a 1997 TJ to repair a
> bent axle tube from a collision. The donor axle was unfortunately
> configured for a 3.76 ratio with the Trac-Lok limited slip, versus the
> original that was 3.07 with no locker. I want to change the old ring and
> pinion into the new differential case to get back to 3.07, otherwise we
> have no 4WD due to the mismatch between front and rear.
>
> My question is whether the 3.07 and 3.76 housings ("pumpkins") are the
> same, so that I can just fit all the old moving parts from the old 3.07
> assembly into the new 3.76 housing. I don't want to open up the cover on
> the new assembly if the bearing seats or something are incompatible. If I
> can just swap, what one-time items will I need, such as the crush sleeve,
> ring bolts, and/or shims?
>
> I've disassembled the old assembly, including taking out the differential
> case out of the housing with a ------er tool, per the manual.