Can I remove the front or rear driveshaft to make my AWD jeep to 2WD? - JeepForum.com
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Unread 04-01-2011, 08:52 PM   #1
Brentllongpre
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Can I remove the front or rear driveshaft to make my AWD jeep to 2WD?

I have a 4x4 97 jeep grand cherokee and I was wondering since the price of gas is so high if i could remove the front or rear drive shaft to make my jeep more fuel efficent. Will this damage my transfer case? or any other part? I can not switch between 4wd and 2wd its always 4wd.

Thanks for any help!

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Unread 04-01-2011, 09:06 PM   #2
PlatinumNiner
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Pull the front shaft it's perfectly safe.
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Unread 04-01-2011, 09:27 PM   #3
Technohead
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But the real answer is no. Removing the driveshaft will not make a measureable difference in mileage. If mileage is a concern then you are driving the wrong vehicle.
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Unread 04-01-2011, 09:29 PM   #4
Candymancan
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Best thing you can do for gas mileage is a complete tuneup and air filter replacement
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Unread 04-01-2011, 09:31 PM   #5
PlatinumNiner
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Agreed on the marginal MPG gains but either way it is safe to remove the shaft. Every little bit counts.
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Unread 04-01-2011, 09:35 PM   #6
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I think someone did some kind of test, between 2WD and 4WD, and he drove like 500 miles each time. The 2WD yeilded like .6MPG more then the 4WD. This could however be something as simple that he drove a little diff while testing as that margin is a small difference to say for sure that it really gives you better gas mileage.

People on here are pretty religious when it comes to this and think 2WD doesnt make any diff, i personally beg to differ, with our 4.0 in 2WD vs 4WD even my mom notices there is a gas mileage difference and she knows nothing about Jeeps.

I have heared with a 97 and up 249 you can remove the DS and not worry abut frying your VC, its just the older Jeeps that cant do it because the TC doesnt lock when your parked so the Jeep will roll. But you wont have this problem
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Unread 04-01-2011, 09:38 PM   #7
PlatinumNiner
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Yes 1993-1995 you can not remove the front shaft. 1996-1998 it's perfectly safe. You do gain quite a bit of performance with no front shaft that i know from my own experience.
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Unread 04-01-2011, 09:42 PM   #8
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Quote:
Originally Posted by Candymancan View Post
People on here are pretty religious when it comes to this and think 2WD doesnt make any diff, i personally beg to differ, with our 4.0 in 2WD vs 4WD even my mom notices there is a gas mileage difference and she knows nothing about Jeeps.
a 242 will always get better mileage in 2wd because it actually stops sending power to the front shaft. this is not the case on a 249.

i agree with platinum niner that it does give a gain in performance with the shaft out, i drove around for a week while i was having my shaft shortened and it was a little more sporty.
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Unread 04-01-2011, 09:43 PM   #9
Brentllongpre
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Thanks for all the replys so fast, im gonna try it out and see for myself if there is a difference. I was more concerned if it was safe or not, beings it is ok to do, i will try it.
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Unread 04-02-2011, 12:48 AM   #10
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If you do this, make sure you plug up the shaft holes. If you don't you'll get all kinds of crap inside the diff and transfer cases.
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Unread 04-02-2011, 07:33 AM   #11
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I ran w/o a front D/S last summer . No difference . Not worth the effort unless your VC is failing .
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Unread 04-02-2011, 11:51 AM   #12
ZJ_This
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Ok i have to remove my d/s, vcu i completly locked. Can someone break it down how to do it. is it just the 4 bolt on the t/c side and thats it or is there more?
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Unread 04-02-2011, 01:09 PM   #13
rdrbssr11
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four bolts per each end of drive shaft. very easy to remove.
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Unread 04-02-2011, 07:36 PM   #14
tcar
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Quote:
Originally Posted by Brentllongpre View Post
Thanks for all the replys so fast, im gonna try it out and see for myself if there is a difference. I was more concerned if it was safe or not, beings it is ok to do, i will try it.
Total waste of time...

You're still turning the front axles and differential, turned by the wheels, not the case.

You will not notice ANY change in gas mileage.

That's why the x-fer case w/ a 2WD option doesn't get better mileage.



When gas prices get high people crawl out of the weeds with flakey ideas to save gas...

You'll be better off adding a couple pounds of air to your tires than doing that.

BTW, this is not safe on a 93-95 w/ quadratrac.
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Unread 04-02-2011, 07:45 PM   #15
Candymancan
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If you have a front CV drive shaft, then you have to remove the 4 bolts at the trans fercase U joint end and i believe you also need to remove 6 bolts on the CV end of the drive shaft. Someone correct me if im wrong ?

Because i know my 5.9 front shaft has a round flat end on the differential with a CV boot and 6 bolts
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