np231 input gear - JeepForum.com

 
LinkBack Thread Tools
post #1 of 7 Old 07-05-2012, 12:23 PM Thread Starter
stevedude19
Registered User
1995 YJ Wrangler 
 
Join Date: May 2011
Location: Winkler
Posts: 349
np231 input gear

So I want to use the t case that was behind my ax-5 which has a 21 spline input . And I'm trying to figure out which input I need to swap in to use the ax-15 I just got. The tcase year is 95 the ax-15 came out of a 96 Cherokee. Thanks

Sent from my Samsung galaxy S 2 using JeepForum because iphones are so last year


95 YJ Rio Grande 2.5L 4cyl 30" BFG ATs 4 inch rc lift 4.0L TB Cold air intake (302 swap in progress)
2010 JK 6 speed
stevedude19 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 07-05-2012, 12:41 PM
Siva283
Registered User
1995 YJ Wrangler 
 
Join Date: May 2011
Location: Falling Waters
Posts: 3,748
23 spline shaft is what you need.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
Siva283 is offline  
post #3 of 7 Old 07-05-2012, 01:09 PM Thread Starter
stevedude19
Registered User
1995 YJ Wrangler 
 
Join Date: May 2011
Location: Winkler
Posts: 349
Quote:
Originally Posted by Siva283
23 spline shaft is what you need.
But what size?

I'm looking to buy this one

http://www.ebay.com/itm/231-J-Jeep-T...item2a1e9abe6f

Sent from my Samsung galaxy S 2 using JeepForum because iphones are so last year

95 YJ Rio Grande 2.5L 4cyl 30" BFG ATs 4 inch rc lift 4.0L TB Cold air intake (302 swap in progress)
2010 JK 6 speed
stevedude19 is offline  
post #4 of 7 Old 07-05-2012, 01:15 PM
Opihi59
from here it gets rough
 
Opihi59's Avatar
1993 YJ Wrangler 
 
Join Date: Dec 2007
Location: Beyond Honolulu
Posts: 5,264
Quote:
Originally Posted by stevedude19 View Post
But what size?

Sent from my Samsung galaxy S 2 using JeepForum because iphones are so last year
You need to read thru this: http://www.novak-adapt.com/knowledge/np_nvg_input_gears.htm

There is significant variation in the input gears, not just limited to the spline count. There are several lengths, different bearing widths, and gear cuts. I'd give Novak a call and they'll help you come up with the input gear you want.

Since your AX15 came from a Cherokee, you will find that the clocking of the transfer case is different and the T case will tip lower on the Driver side than your original. To remedy this, you will need to redrill the mount holes on the tailshaft of the transmission. This is easy to do. I'll look for the writeup on this and post it in if I can find it.

Try this-not exactly what I was looking for, but read Mean Max's input. There may be a writeup lurking around, but from reading the text in this string, you can do this. http://www.jeepforum.com/forum/f12/c...-case-1053744/

It will at least get you started.

....I'm not smart, but I can lift heavy things.......

Fill out your PROFILE, and don't forget to look in the FAQ for writeups

I'm stuck on da Rock http://kamfamily.wordpress.com/2009/...waiian-limpet/

Quote:
Originally Posted by Brian4.2 View Post
We will be going Metric every inch of the way.
Quote:
Originally Posted by 40dog View Post
yes I'm a some guy and have always put gasket sealer on my surfaces before mating
Quote:
Originally Posted by Virjeep View Post
You should go to Pirate. I hear they are real smart over there. You'd fit right in.

Last edited by Opihi59; 07-05-2012 at 01:24 PM. Reason: Clocking Link
Opihi59 is offline  
post #5 of 7 Old 07-09-2012, 11:16 AM Thread Starter
stevedude19
Registered User
1995 YJ Wrangler 
 
Join Date: May 2011
Location: Winkler
Posts: 349
Quote:
Originally Posted by Opihi59

You need to read thru this: http://www.novak-adapt.com/knowledge/np_nvg_input_gears.htm

There is significant variation in the input gears, not just limited to the spline count. There are several lengths, different bearing widths, and gear cuts. I'd give Novak a call and they'll help you come up with the input gear you want.

Since your AX15 came from a Cherokee, you will find that the clocking of the transfer case is different and the T case will tip lower on the Driver side than your original. To remedy this, you will need to redrill the mount holes on the tailshaft of the transmission. This is easy to do. I'll look for the writeup on this and post it in if I can find it.

Try this-not exactly what I was looking for, but read Mean Max's input. There may be a writeup lurking around, but from reading the text in this string, you can do this. http://www.jeepforum.com/forum/f12/c...-case-1053744/

It will at least get you started.
thanks for the info.
do you know if i can just swap the ax5 21 spine shaft with the ax-15?

Sent from my Samsung galaxy S 2 using JeepForum because iphones are so last year

95 YJ Rio Grande 2.5L 4cyl 30" BFG ATs 4 inch rc lift 4.0L TB Cold air intake (302 swap in progress)
2010 JK 6 speed
stevedude19 is offline  
post #6 of 7 Old 07-09-2012, 11:30 AM
Opihi59
from here it gets rough
 
Opihi59's Avatar
1993 YJ Wrangler 
 
Join Date: Dec 2007
Location: Beyond Honolulu
Posts: 5,264
Quote:
Originally Posted by stevedude19 View Post
thanks for the info.
do you know if i can just swap the ax5 21 spine shaft with the ax-15?
As in remove the mainshaft from the AX 5 transmission and drop it into the AX15 transmission? No. They are not compatible. Even if it were possible, it would require complete tear down of 2 transmissions to do which would be a task with a complexity several orders of magnitude greater than swapping out an input gear in a NP231.

....I'm not smart, but I can lift heavy things.......

Fill out your PROFILE, and don't forget to look in the FAQ for writeups

I'm stuck on da Rock http://kamfamily.wordpress.com/2009/...waiian-limpet/

Quote:
Originally Posted by Brian4.2 View Post
We will be going Metric every inch of the way.
Quote:
Originally Posted by 40dog View Post
yes I'm a some guy and have always put gasket sealer on my surfaces before mating
Quote:
Originally Posted by Virjeep View Post
You should go to Pirate. I hear they are real smart over there. You'd fit right in.
Opihi59 is offline  
post #7 of 7 Old 07-09-2012, 11:33 AM Thread Starter
stevedude19
Registered User
1995 YJ Wrangler 
 
Join Date: May 2011
Location: Winkler
Posts: 349
Quote:
Originally Posted by Opihi59

As in remove the mainshaft from the AX 5 transmission and drop it into the AX15 transmission? No. They are not compatible. Even if it were possible, it would require complete tear down of 2 transmissions to do which would be a task with a complexity several orders of magnitude greater than swapping out an input gear in a NP231.
Haha ok thanks. i was pretty sure it wasn't too doable . Im thinking ill just look for a different 231

Sent from my Samsung galaxy S 2 using JeepForum because iphones are so last year

95 YJ Rio Grande 2.5L 4cyl 30" BFG ATs 4 inch rc lift 4.0L TB Cold air intake (302 swap in progress)
2010 JK 6 speed
stevedude19 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome