Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 07-11-2012, 05:33 AM
Member
 
Join Date: May 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 827
Cherokeep is on a distinguished road
WJ jeep questions

Ok to start off i want to throw out a hypothetical to the jeepgarage brainstrust.

I have a 99 WJ GC limited with quadra drive,

It is my understanding that the diffs are controlled electronically and they progressively send torque to the wheel with traction.

My question is that since its controlled electronically could the computer that controls the diffs be "hotwired" (for want of a better term) to lock and unlock the diffs manually? I am imagining a piggyback computer that allows the user to control the level of lock, rather than the computer itself deciding which wheel needs torque.

I understand this is probably not ideal, the computer is there for a reason and its a good system, prematurely "locking" the diffs will probably cause damage.

So again, it was just an idea that i had while driving around, and i am curious as to the logistics of such a mod.
__________________

__________________
Reply With Quote
  #2  
Old 07-11-2012, 09:00 AM
harkinsc's Avatar
Member
My Jeep: 2004 4.7 HO WJ
 
Join Date: Mar 2012
Location: Atlanta, GA
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 908
harkinsc is on a distinguished road
Garage
Re: WJ jeep questions

Incorrect... The Vari-Lok differentials use hydraulic pressure to lock up, not electronics.

http://en.wikipedia.org/wiki/Jeep_fo...Drive_.28WJ.29

Quadra-Drive (WJ)

Quadra-Drive employed the New Venture Gear NV247 transfer case. This two-speed chain-driven transfer case uses a gerotor, a clutch pack coupled to a hydraulic pump, to transfer torque between the front and rear axles. The transfer case contains three modes, 4-All Time, Neutral, and 4-Lo. In 4-All Time, torque is applied to the rear wheels under normal driving conditions. If the rear axle starts spinning at a higher rate than the front axle, hydraulic pressure builds up in the gerotor and causes the clutch pack to progressively transfer torque to the front axle until both axles return to the same speed. Neutral mode is intended for towing the vehicle. In 4-Lo, the front and rear axles are locked together through a 2.72 reduction gear ratio.
In Quadra-Drive, the NV247 transfer case is mated to front and rear axles containing Jeep's Vari-Lok differentials. Vari-Lok differentials also use a gerotor to transfer torque between the two wheels.
Applications:
__________________
2004 Grand Cherokee Overland - Brilliant Black
Quadra-Drive - Up Country Suspension - Factory Tow Package - RB1 Navigation

Modifications: K&N 57 Series FIPK, SuperChips Flashpaq for Jeep, 3" Exhaust from the Y-pipe, Flowmaster 70 series, Magnaflow high-flow catalytic converter
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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
Jeep WK Diesel exhaust questions sshaughn Engine Performance/Intake/Exhaust 1 05-30-2012 12:41 PM
Just got my first jeep - 2 problems/questions Aghotbi Trouble Shooting/Problems/Service 17 03-15-2012 07:24 PM
New questions for the 2011-12 Jeep engineers Scottina06 Grand Cherokee - WK2 - 34 08-22-2011 09:38 AM
Just a few questions about YOUR Jeep... jeff05wk Grand Cherokee - WK 24 03-02-2011 02:14 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:40 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community