D30 v. D44 axles - FAQ? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-20-2013, 12:22 PM   #1
Jeeper
 
JKURz Wild's Avatar
 
Join Date: Aug 2012
Location: Interior, BC
Posts: 104
D30 v. D44 axles - FAQ?

Looking for a FAQ/reference site that explains whats what between the JK's 2 stock axle options.

JKURz Wild is offline   Quote Quick Reply
Old 08-20-2013, 12:27 PM   #2
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,752
The housings are pretty much the same. Ring/pinion gear is larger in the 44 along with stronger shafts. Basically the internals are different.

__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2013, 12:30 PM   #3
rabbits eat lettuce

WF Supporting Member
::WF Moderator::
 
tabber02's Avatar
 
Join Date: Nov 2010
Location: left coast, florida
Posts: 10,447
i thought the only difference between the 30 and 44 is the size of the ring and pinion gear. they have the same axle tube, outer knuckle and u-joints.

if you're reinforcing a dana 30 (c's, sleeves or truss, chrome-moly axles) you've built an axle stronger than a Dana 44... throw in taller gears, and the only weakness is gone...
__________________
-bob

2010 JK - Mountain Edition
i spend way too much money on it... that's all



tabber02 is offline   Quote Quick Reply
Old 08-20-2013, 12:38 PM   #4
Jeeper
 
live_slow's Avatar
 
Join Date: Apr 2013
Posts: 666
http://www.wranglerforum.com/f33/dan...ure-99437.html

The thread above has a photo and a link to some tips on D30s.

Here's a picture of the gears.

Click image for larger version

Name:	D44vsD30.jpg
Views:	1098
Size:	57.3 KB
ID:	288095

Edit: as with just about anything, common sense rules.

If you fix up the C's, you probably should gusset the tubes, and then if you don't stop, you're on to shafts and wallet explosions.

I'll do the C's when I go up to 315s on the factory 44s and lay off the stupid pedal.
__________________
IIIIII

Just another Billet Silver Metallic. It blends.
2013 | JK | 23R | 2"M | 33s on 15s |
live_slow is offline   Quote Quick Reply
Old 08-20-2013, 12:46 PM   #5
rabbits eat lettuce

WF Supporting Member
::WF Moderator::
 
tabber02's Avatar
 
Join Date: Nov 2010
Location: left coast, florida
Posts: 10,447
i don't know about wallet explosion... i've probably got 2,500 in my front axle (all over time) and that's way cheaper than buying a new 44 housing and starting over. and i wheel more than most - with 35s and 37s... it's just about being smart with the skinny pedal.

800 - front locker
500 - 4.88 gear
800 - g2 placer gold axles
200 - TF sleeves and c's
200 - synergy ball joints
__________________
-bob

2010 JK - Mountain Edition
i spend way too much money on it... that's all



tabber02 is offline   Quote Quick Reply
Old 08-20-2013, 12:51 PM   #6
Jeeper
 
live_slow's Avatar
 
Join Date: Apr 2013
Posts: 666
Quote:
Originally Posted by tabber02 View Post
i don't know about wallet explosion... i've probably got 2,500 in my front axle (all over time) and that's way cheaper than buying a new 44 housing and starting over. and i wheel more than most - with 35s and 37s... it's just about being smart with the skinny pedal.

800 - front locker
500 - 4.88 gear
800 - g2 placer gold axles
200 - TF sleeves and c's
200 - synergy ball joints

nice n' strong!

I'm guessing you did the work. I don't have the space or the talent or the tools.

But yeah, if you want to run big tires on a JK 30 or 44 you probably need to "polish the turd" as they used to say. :-)

Good setup. Probably half of a swap job for a custom front in terms of cost.
__________________
IIIIII

Just another Billet Silver Metallic. It blends.
2013 | JK | 23R | 2"M | 33s on 15s |
live_slow is offline   Quote Quick Reply
Old 08-20-2013, 12:58 PM   #7
rabbits eat lettuce

WF Supporting Member
::WF Moderator::
 
tabber02's Avatar
 
Join Date: Nov 2010
Location: left coast, florida
Posts: 10,447
Quote:
Originally Posted by live_slow View Post
nice n' strong!

I'm guessing you did the work. I don't have the space or the talent or the tools.

But yeah, if you want to run big tires on a JK 30 or 44 you probably need to "polish the turd" as they used to say. :-)

Good setup. Probably half of a swap job for a custom front in terms of cost.
thanks, i suppose, but all over time. i didn't pay that at once! makes that a bit more bearable.

i had some help.. got lucky i suppose!
__________________
-bob

2010 JK - Mountain Edition
i spend way too much money on it... that's all



tabber02 is offline   Quote Quick Reply
Old 08-20-2013, 01:04 PM   #8
MallCrawler

WF Supporting Member
::WF Moderator::
 
kjeeper10's Avatar
 
Join Date: Feb 2011
Location: Connecticut
Posts: 34,752
Only reason Id spring for the Prorock or TF housing... increase in caster/pinion separation.
__________________
2007 Rubicon/Rock Krawler triple rate 2.5" coils/RK rear TB w/ a teraflex raised bracket/Rancho 9000 31/32XL shocks/Synergy flipped draglink,ball joints,tie rod /Hankook MT 315-75-16 on Level 8 ZX's/Rancho geo brackets/Ruff stuff uppers/Fox ATS stabilizer/Adams front DS/Artec front armor w/ Currie upper bushings/Rancho cat back exhaust.

Lifting your JK? Read this!!



Click HERE to become a WranglerForum Supporting Member!
kjeeper10 is online now   Quote Quick Reply
Old 08-20-2013, 01:52 PM   #9
Sponsoring Vendor
 
Rancho's Avatar
 
Join Date: Sep 2012
Posts: 864
Quote:
Originally Posted by kjeeper10 View Post
Only reason Id spring for the Prorock or TF housing... increase in caster/pinion separation.

Also stronger tubes, and at least on the ProRock 44 better clearance.

I have seen sleeved stock 44 cracked, but I have also seen ALL types of axle housings cracked/bent. ULTRA4 racers aren't easy on their cars.
__________________


Follow us on Facebook!
https://www.facebook.com/ranchosuspension
Rancho is offline   Quote Quick Reply
Old 08-20-2013, 03:13 PM   #10
Jeeper
 
Seeuoffroad's Avatar
 
Join Date: Oct 2012
Posts: 310
2012 JKU. I also built up my D30. But with that said if I would have had to pay someone to do it I would have went with the JKUR.
I did C's and gussets, 44 magnum sleeves, synergy ball joints, chromoly axles, Yukon 4.88 cryo treated R&P, ARB lockers and diff covers.
I would say I don't wheel the real crazy trails. Mostly stuff like Hell's Revenge, Fins and things those kind of trails in Moab. Red cone pass, Radical Hill, McAllister Gulch, Wheeler lake. So far so GREAT the Jeep has made the trails very easily. I do like that I have choices in what lockers I turn on. The build has exceeded my expectations do far.
Seeuoffroad is offline   Quote Quick Reply
Old 08-20-2013, 04:08 PM   #11
Jeeper
 
Jstraw's Avatar
 
Join Date: Jun 2013
Location: Mercer county
Posts: 242
Images: 6
What do you mean by "c's"?
Jstraw is offline   Quote Quick Reply
Old 08-20-2013, 04:12 PM   #12
Jeeper
 
Old Dogger's Avatar
 
Join Date: May 2012
Location: Phoenix, Rattlesnake Country
Posts: 3,249
They also have Heavier axle shafts with more spline count...........
Old Dogger is offline   Quote Quick Reply
Old 08-20-2013, 04:27 PM   #13
rabbits eat lettuce

WF Supporting Member
::WF Moderator::
 
tabber02's Avatar
 
Join Date: Nov 2010
Location: left coast, florida
Posts: 10,447
Quote:
Originally Posted by Jstraw View Post
What do you mean by "c's"?
the "C" around the knuckle.. you can see where the gusset was welded on
Attached Thumbnails
Click image for larger version

Name:	IMG_1175.jpg
Views:	71
Size:	210.5 KB
ID:	288186  
__________________
-bob

2010 JK - Mountain Edition
i spend way too much money on it... that's all



tabber02 is offline   Quote Quick Reply
Old 09-19-2013, 08:28 PM   #14
Jeeper
 
JKURz Wild's Avatar
 
Join Date: Aug 2012
Location: Interior, BC
Posts: 104
Thanks to all who contributed.

To sum up the thread so far...

same housings and externals
different ring, pinion and shafts

Anything else?

Trying to find a link to a parts catalogue with pictures, descriptions etc - but no luck yet.
JKURz Wild is offline   Quote Quick Reply
Old 09-19-2013, 08:41 PM   #15
rabbits eat lettuce

WF Supporting Member
::WF Moderator::
 
tabber02's Avatar
 
Join Date: Nov 2010
Location: left coast, florida
Posts: 10,447
that's a good summarization
__________________
-bob

2010 JK - Mountain Edition
i spend way too much money on it... that's all



tabber02 is offline   Quote Quick Reply
Old 09-19-2013, 09:08 PM   #16
Jeeper
 
Old Dogger's Avatar
 
Join Date: May 2012
Location: Phoenix, Rattlesnake Country
Posts: 3,249
Quote:
Originally Posted by JKURz Wild View Post
Thanks to all who contributed.

To sum up the thread so far...

same housings and externals
different ring, pinion and shafts

Anything else?

Trying to find a link to a parts catalogue with pictures, descriptions etc - but no luck yet.
The shafts are larger, more durable and also have a larger spline count.

Old Dogger is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:19 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC