[rs182]

I have done extensive searching and haven't been able to find a thread detailing the specs of our front and rear axles. If we could list all information pertinent to our front and rear diffs here it would make it much easier for those searching for information.
1. Front and rear (Dana 44) ring gear size
2. Ring & pinion tooth count
3. Spline count
4. Any other information that may be useful

I'm currently trying to compare our fronts and rears to those of the '07 TRD Off Road Tacomas. It appears they have 8" fronts and rears: http://home.4x4wire.com/erik/diffs/
I wonder if this makes them stronger (than our fronts at least)?

 

[stevet47]

As far as the front diff. goes here is the info:

Frontier/ Xterra/ Pathfinder
Diff. Name - R180A
Ratio - 3.357
Ring Gear Teeth/Pinion Gear Teeth - 47/14
Oil Capacity - 1 3/4 US pints.

Titan:
Diff. Name - M205
Ratio - 3.357 or 2.937
Ring Gear Teeth/Pinion Gear Teeth - 47/14 for the 3.357
Oil Capacity - 3 3/8 US pints.

 

[rs182]

Thanks stevet47.
So that means that the X front differential has a ring gear diameter of 180mm, or 7.09".
The Titan front diff has a ring gear diam of 205mm, or 8.07".
Please correct me if I'm wrong.

 

[rs182]

Some information on Dana 44 axles:
Ring gear diameter: 8.5"
Axle shaft diameter: 1.31"
Pinion shaft diameter: 1.376"
26 spline pinion shaft
30 spline axles
This information pertains to Dana 44 axles in general and hopefully our variant as well.

Another interesting bit of information:
Dana 30 specs:
7.125" ring gear
27 spline axles
1.16" axle shaft diameter
1.376" x 26 spline pinion (same as Dana 44)
Very similar to our front diffs...
"The Dana 35 has the reputation of being weak, and that's true for a few reasons. The axle shafts and gears are small, yes, but more of a problem is the axle housing. The center casting of a Dana 35 is smaller than a Dana 44 casting, and the Dana 35 axle tubes are also smaller. The weaker casting and tubes allow the whole assembly to flex, causing the axles, gears, and even carriers to break more easily."
Quote taken from http://www.4x4wire.com/jeep/tech/axle/xj_dana44_02/

Guide to R&P install and adjustment:
http://www.drivetrain.com/ringpinioninstal.html