Transfer box! - JeepForum.com
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post #1 of 32 Old 12-05-2011, 01:48 PM Thread Starter
desertrat55
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Transfer box!

Hi, I want to change my transfer box from all wheel drive to hi/low, low 4 wheel drive with manual hubs.is this pos'l.

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post #2 of 32 Old 12-05-2011, 02:17 PM
Freestyle713
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fill out some of your vehicle info so we know what you drive. and i dont really understand what you want to do. im assuming swap out an all wheel drive transfer case for another one, but i dont really understand what kind of transfer case you want
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post #3 of 32 Old 12-05-2011, 02:35 PM Thread Starter
desertrat55
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Hey thanks for the reply, I have a ZG grand Cherokee limited constant 4wheel drive and want to change to manual hi low.
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post #4 of 32 Old 12-05-2011, 02:47 PM
Freestyle713
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i assume your current transfer case has 4HI--N--4LO and i dont understand what you mean by manual hi low
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post #5 of 32 Old 12-05-2011, 05:02 PM Thread Starter
desertrat55
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Have 4xhi-n-4xlow. Want to change to 2xhi 4xhi and 4x4low with manual free wheeling hubs!
Cheers
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post #6 of 32 Old 12-05-2011, 05:12 PM
nicklopic
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im just wondering... why would you want manual locking hubs, if your getting a t-case with 2wd???? it doesnt make sense to me...

from what ive heard, having locking hubs isnt worth it and doesnt give any really major benefits.

98' ZJ 4.0
4.5" short arm, 33" Courser MXTs, custom stubby bumper, skids, someother stuff
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post #7 of 32 Old 12-05-2011, 05:27 PM
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post #8 of 32 Old 12-05-2011, 05:33 PM
PolkaPower
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Probably for gas mileage since you don't save any gas in 2wd with a ZJ.
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post #9 of 32 Old 12-05-2011, 05:42 PM
Freestyle713
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Quote:
Originally Posted by nicklopic View Post
im just wondering... why would you want manual locking hubs, if your getting a t-case with 2wd???? it doesnt make sense to me...

from what ive heard, having locking hubs isnt worth it and doesnt give any really major benefits.
if you have hubs that can unlock and also have 2wd, when it is in 2wd and the hubs are unlocked, the front axle shafts, differential, and front driveshaft dont spin, so it increases mpgs because they are not taking power away from the drivetrain. the hubs disconnect the axle shafts from the hub that the wheel is attached to, so the wheels spin freely. thats why just 2wd doesnt cause you to gain mpgs because those drivetrain components are still spinning.
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post #10 of 32 Old 12-05-2011, 05:50 PM
blackjack12982
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Quote:
Originally Posted by Freestyle713 View Post
if you have hubs that can unlock and also have 2wd, when it is in 2wd and the hubs are unlocked, the front axle shafts, differential, and front driveshaft dont spin, so it increases mpgs because they are not taking power away from the drivetrain. the hubs disconnect the axle shafts from the hub that the wheel is attached to, so the wheels spin freely. thats why just 2wd doesnt cause you to gain mpgs because those drivetrain components are still spinning.
You're gonna need to gain substantial MPG's to offset the cost of the hub conversion -

http://www.rocksterparts.com/servlet...ING-HUB/Detail

If you want better mileage, then just sell the ZJ and buy a Prius. This is discussed all the time, and noone ever does it.
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post #11 of 32 Old 12-05-2011, 06:09 PM
Freestyle713
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Originally Posted by blackjack12982 View Post
You're gonna need to gain substantial MPG's to offset the cost of the hub conversion -

http://www.rocksterparts.com/servlet...ING-HUB/Detail

If you want better mileage, then just sell the ZJ and buy a Prius. This is discussed all the time, and noone ever does it.
well yes, obviously the mpg gain is minimal and not even worth it to most people, but thats what the locking hubs are for is so the axle shafts and front driveshaft dont spin because they are completely disconnected
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post #12 of 32 Old 12-05-2011, 06:13 PM
blackjack12982
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Originally Posted by Freestyle713 View Post
well yes, obviously the mpg gain is minimal and not even worth it to most people, but thats what the locking hubs are for is so the axle shafts and front driveshaft dont spin because they are completely disconnected
Yeah, I'm aware what manual hubs do. Again, you can buy a lot of axle shafts for 1k+. I used to pop hubs quite often when I wheeled my old Power Wagon. All you can really do with a D30 is move the weak spot around when you get to big boy tires on it.
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post #13 of 32 Old 12-05-2011, 06:31 PM
Freestyle713
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Quote:
Originally Posted by blackjack12982 View Post
Yeah, I'm aware what manual hubs do. Again, you can buy a lot of axle shafts for 1k+. I used to pop hubs quite often when I wheeled my old Power Wagon. All you can really do with a D30 is move the weak spot around when you get to big boy tires on it.
yeah i said that to let nicklopic know what they were for. i dont doubt your knowledge
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post #14 of 32 Old 12-05-2011, 07:02 PM
nicklopic
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i know what they do?

the hassle involved just doesnt make any sense to me personally and not worth it from what ive heard

98' ZJ 4.0
4.5" short arm, 33" Courser MXTs, custom stubby bumper, skids, someother stuff
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post #15 of 32 Old 12-06-2011, 06:32 AM Thread Starter
desertrat55
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Being in constant 4wheel drive applies what I consider unwarranted pressure on steering components and power steering pump. Free wheeling hubs disengages the front diff, axles, trams and wheels and only the power steering pump is utilized. This also I believe reduces front tire wear!
Don't know 'bout other ZG owners but I am getting around 600 miles to a tank and she has over 230000k's on the clock. Also my other truck, Terrano wd21 gives me less than 500k's from 80liters...
I'm working on the principal of less moving parts generates longevity.
Cheers
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