how to identify which gears to buy - 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 11-29-2009, 08:49 AM   #1
Jeeper
 
scopop's Avatar
 
Join Date: Oct 2009
Location: Hedgesville WV
Posts: 71
how to identify which gears to buy

Still trying to get gear smart, and I'm stumped again. My front axle is a HP D30 with solid axles in my 09 Unlimited. I'm trying to buy some 4.1 gears for it and just can't figure out which to buy. How do I know if I have a reverse, or straight cut or ??? And will the Rubicon D44 front axle gears fit it?

scopop is offline   Quote Quick Reply
Old 11-29-2009, 09:03 AM   #2
Jeeper
 
Join Date: Jul 2008
Location: Six Lakes, MI
Posts: 462
Quote:
Originally Posted by scopop View Post
Still trying to get gear smart, and I'm stumped again. My front axle is a HP D30 with solid axles in my 09 Unlimited. I'm trying to buy some 4.1 gears for it and just can't figure out which to buy. How do I know if I have a reverse, or straight cut or ??? And will the Rubicon D44 front axle gears fit it?
I strongly recommend you find a reliable 4x4 gearing shop in your neck of the woods..They not only know what gears to use but for sure they know how to install them..

USAntigoon is offline   Quote Quick Reply
Old 04-17-2010, 02:07 PM   #3
Jeeper
 
Join Date: Oct 2009
Location: SF Bay Area, CA
Posts: 360
Quote:
Originally Posted by scopop View Post
Still trying to get gear smart, and I'm stumped again. My front axle is a HP D30 with solid axles in my 09 Unlimited. I'm trying to buy some 4.1 gears for it and just can't figure out which to buy. How do I know if I have a reverse, or straight cut or ??? And will the Rubicon D44 front axle gears fit it?
front axles use a reverse cut because they're facing opposite of the rear.

ring and pinion from a D44 will not fit a D30. you have to get D30 reverse sets for your front D30. and when you have under 3.73 stock, if you go to 3.73 or higher, you need a new case insert also.
__________________
2013 VW GTI
2009 Nissan Xterra
plac is offline   Quote Quick Reply
Old 04-18-2010, 12:02 AM   #4
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,621
Quote:
Originally Posted by plac View Post
front axles use a reverse cut because they're facing opposite of the rear.
Not true. Reverse cut gears are for HIGH PINION axles, such as that in the Dana30's in the JK's. And it's entirely different Dana30 than a TJ's... same as the rear, although a Dana44, it's a completely new one.

This is a picture of a standard low pinion gear set for a Dana30.


This is a high pinion reverse cut gear set for a HP Dana30.


Notice how the teeth are facing?
AzTJ is offline   Quote Quick Reply
Old 04-18-2010, 11:28 AM   #5
Jeeper
 
Join Date: Oct 2009
Location: SF Bay Area, CA
Posts: 360
so you can put a "r" reverse gearset in the rear axle?
__________________
2013 VW GTI
2009 Nissan Xterra
plac is offline   Quote Quick Reply
Old 04-18-2010, 10:12 PM   #6
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,621
Quote:
Originally Posted by plac View Post
so you can put a "r" reverse gearset in the rear axle?
No... only if you have a High Pinion Dana30 rear, which doesn't exist.

It has nothing to to with location, it's all about which way they are cut.

You can have a Dana60 rear end (low pinion) and have a Dana60 front end (low pinion) and they will use the same gear set, front or rear it doesn't matter so long as they are both low pinions.

When you have a high pinion, the teeth are cut in reverse because the pinion is on the top. It's confusing, but visually, you'd see as that's why I posted the picture.
AzTJ is offline   Quote Quick Reply
Old 04-19-2010, 11:48 AM   #7
Member
 
Join Date: Mar 2009
Location: Upstate/Eastern NY
Posts: 1,960
Send a message via AIM to thaduke2003
Ok- ignore just about everything said above.
JK ring gears run thicker than ANY other Dana 30 and Dana 44 setup before. You can ONLY run JK-specific ring and pinion gears. Any decent gear vendor will have them available. Talk to the guys at 4ws.com They know what they're doing- Mark W.

thaduke2003 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Newbie -Please help - 307 gears & lift options fliggyg TJ General Discussion Forum 3 12-19-2011 08:32 AM
Changing Diff Gears USBrit TJ General Discussion Forum 11 09-21-2011 10:17 AM
D35 and gears or upgrade. Urgent help please fliggyg TJ Tech Forum 9 11-10-2009 05:04 PM
3.21 gears for 2008 Wrangler X jlowens6646 JK Tech Forum 16 01-01-2008 06:44 PM
Gears Gears Gears Help Jeepluv07 JK Tech Forum 3 04-27-2007 02:37 PM



» Featured Product

All times are GMT -5. The time now is 12:45 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