Need help!!! - JeepForum.com
 
LinkBack Thread Tools
post #1 of 10 Old 02-11-2013, 08:59 PM Thread Starter
ND87
Registered User
1998 ZJ 
 
Join Date: Nov 2011
Location: perkiomenville
Posts: 8
Need help!!!

hello im looking to put a cherokee rear in my comanche. the reason being is my comanche is a 2.5 5 speed 4x2. it has 4:10 gears in the rear and i would like to put 3:55. i have a rear out of a cherokee with 3:55 in it. will this just bolt right up? and if so what do i have to do to make my speedo work properly again? i have asked a couple guys i know that work on jeeps and they have no idea. someone please help!

ND87 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 02-13-2013, 07:56 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,019
Why? The spring perches are on top of the Cherokee and under the axle on the Comanche. Can you weld/fabricate?

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
post #3 of 10 Old 02-13-2013, 10:24 PM Thread Starter
ND87
Registered User
1998 ZJ 
 
Join Date: Nov 2011
Location: perkiomenville
Posts: 8
yes i can weld. im more worried about finding the right speed gear to make my speedo right.

on a side note has anyone put power window doors on a non power window truck before? im going to tackle that this weekend and was wondering if anyone has done it so the can give me some advice or tips
ND87 is offline  
post #4 of 10 Old 02-14-2013, 04:33 AM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,019
Speedo gear is not an issue. Can be obtained easily. Why do you want to swap to 3.55s from 4.10s? Think your fuel mileage is gonna increase?

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
post #5 of 10 Old 02-14-2013, 04:44 AM
Mean Max
Don't poke the bear
 
Mean Max's Avatar
1991 YJ Wrangler 
 
Join Date: Jul 2007
Location: Stuart, Florida
Posts: 13,734
Quote:
Originally Posted by cruiser54 View Post
Speedo gear is not an issue. Can be obtained easily. Why do you want to swap to 3.55s from 4.10s? Think your fuel mileage is gonna increase?
I'm thinking what cruiser54 is thinking.

It's gonna go from gutless to downright dogged out with a 4-banger & 3.55 gears.

Max

Click here to see all of my different albums on Photobucket.
Choose any album to see all of my pics!


Quote:
Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
Mean Max is offline  
post #6 of 10 Old 02-14-2013, 04:56 AM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,019
Quote:
Originally Posted by Mean Max View Post
I'm thinking what cruiser54 is thinking.

It's gonna go from gutless to downright dogged out with a 4-banger & 3.55 gears.

Max
Yep. I had a 2.5 2wd MJ with 3.55s. Hills sucked. Could hardly use 4th gear.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
post #7 of 10 Old 02-15-2013, 08:00 PM Thread Starter
ND87
Registered User
1998 ZJ 
 
Join Date: Nov 2011
Location: perkiomenville
Posts: 8
i do alot of highway driving and was told it would help. think i will probably just stick with what i got. im averaging like 20ish mpg anyway.
ND87 is offline  
post #8 of 10 Old 02-16-2013, 05:05 AM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,019
Quote:
Originally Posted by ND87 View Post
i do alot of highway driving and was told it would help. think i will probably just stick with what i got. im averaging like 20ish mpg anyway.
Good plan.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
post #9 of 10 Old 02-16-2013, 05:40 AM
Mistersean86
Registered User
1989 MJ Comanche 
 
Join Date: Feb 2013
Location: Danielsville
Posts: 6
I have a 2.5, ax4 MJ base model that the previous owner swapped axles and suspension out of an automatic 4x4 cherokee. So my MJ now sits on the chrysler 8.25 in rear with a nonfunctioning d30 in the front and about three inches
Higher than stock 4x2. He never regeared so its running whetever stock gears came from that cherokee. (from my research, i believe 3.55). I drive it 60hwy/40cty. And I get 24mpg average. However, it has stock speedo gear for 4.10. So my 24 is probably not that accurate.
Also, hills suck, and it's not gonna win any races. But I'm a college student and its a much welcome improvement to fill my comanche once a week compared to 3 times in my 4.3 s10. I honestly don't mind the sluggishness.
Also, he used the comanche spring perches under the cherokee rear.

Edit: the comanche originally came in a feul miser package with a 2.5, ax4, and 3.31? gears. So you must be on to something in your reasoning.
Mistersean86 is offline  
post #10 of 10 Old 02-22-2013, 10:55 PM
carnuck
Registered User
1984 J-Series Truck 
 
Join Date: Nov 2004
Posts: 3,211
The spring pads are 1.5" offset each side from XJ to MJ. I found that out when I put an XJ 3.73 axle in my MJ and did SOA at the same time.

"Usually found in a Jeep near Reiter, WA"
FOR SALE STUFF
http://tinyurl.com/jimsclads

'81 Eagle wagon with upgrades $2500
'87 Comanche shortbox 4.0/AW4/NP242 on 33" tires $3500
carnuck 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