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Front or Rear shaft?

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Old May 4, 2010 | 05:06 PM
  #1  
WhatsARoad's Avatar
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From: VAFB California
Default Front or Rear shaft?

I have a 2 dr auto, i want to put the 3" TF full flex on with 35"s, that said my question is i have enough $$ for one drive shaft which one should i replace first or am i going to have to get both. I plan on doing some moderate to difficult wheeling far from home and dont want to be towed 2hrs back home else i would just wait till they broke off. Thanks for any and all assistance.
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Old May 4, 2010 | 05:33 PM
  #2  
nthinuf's Avatar
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Budget for both.

Something to be aware of is that TF coils are known for giving a lot of lift. Many report over 4" of lift on 2doors, some have stated they got closer to 5".

If you haven't done so already, open up the FAQ's and browse a bit.

These in particular:
Q: Are new driveshafts needed after installing a lift?
Q: What are all the components that I will need with a 3" lift?
Q: What are all the components that I will need with a 4" lift?

Since you have an auto, you should also look at this one. See post #6 for pics.
https://www.jk-forum.com/forums/show...vs.-Skid-plate
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Old May 4, 2010 | 05:43 PM
  #3  
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Short answer:

Get the front first. Budget for the rear.


Last edited by stlfan06; May 4, 2010 at 08:40 PM.
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Old May 4, 2010 | 05:54 PM
  #4  
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Probably best to budget for both. Most likely with out adding some of the arms along with the lift it would be the rear drive shaft that would go first. One thing to look at is TeraFlex just came out with springs for 2 door JKs. So the 2 door 3" springs would run truer to 3". I went with the 2.5" coils and the guys at the TeraFlex Plus shop tell me I'd be able to do 35's just fine. For now with the little bit shorter springs I think I have a pretty good chance to run the stock drive shafts for a while. But it's in my budget just the same. Call or PM Joe, his screen name on the forum is TeraFlex and the # is: 1-888-837-2359 ext 308 He'd be great to help work through the best set up for you.
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Old May 4, 2010 | 05:55 PM
  #5  
WhatsARoad's Avatar
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From: VAFB California
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Budget for both.

Something to be aware of is that TF coils are known for giving a lot of lift. Many report over 4" of lift on 2doors, some have stated they got closer to 5".

If you haven't done so already, open up the FAQ's and browse a bit.

These in particular:
Q: Are new driveshafts needed after installing a lift?
Q: What are all the components that I will need with a 3" lift?
Q: What are all the components that I will need with a 4" lift?

Since you have an auto, you should also look at this one. See post #6 for pics.
https://www.jk-forum.com/showthread.p...vs.-Skid-plate
Ive heard these TF's give more lift than advertised, and thats kinda why i want the 3" over the 2.5" if im going to have to buy Shafts anyway, i did not however anticipate the skid plate problem, thank you!
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Old May 4, 2010 | 06:04 PM
  #6  
WhatsARoad's Avatar
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Probably best to budget for both. Most likely with out adding some of the arms along with the lift it would be the rear drive shaft that would go first. One thing to look at is TeraFlex just came out with springs for 2 door JKs. So the 2 door 3" springs would run truer to 3". I went with the 2.5" coils and the guys at the TeraFlex Plus shop tell me I'd be able to do 35's just fine. For now with the little bit shorter springs I think I have a pretty good chance to run the stock drive shafts for a while. But it's in my budget just the same. Call or PM Joe, his screen name on the forum is TeraFlex and the # is: 1-888-837-2359 begin_of_the_skype_highlighting 1-888-837-2359 end_of_the_skype_highlighting ext 308 He'd be great to help work through the best set up for you.
Thats what i figured, but thought it better to ask, now i just need to break open the piggy banks, i could always go with another brand but with everybody recommending TF, better to be patient. Thanks for the info and contacts.
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Old May 4, 2010 | 06:27 PM
  #7  
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If your going to get 3in w/ flexarms for a 2dr, get the rear ds first. It's the one to be known to go quicker on lifted two doors because of the extreme angle. And this is also the ds your dependent on for daily driving. Then just run your front till it gives you probs or you can afford one.
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Old May 4, 2010 | 06:39 PM
  #8  
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Default Re: Front or Rear shaft?

Definetly get the rear first. The driveshaft angle is very severe at that high of a lift on a two door.
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Old May 4, 2010 | 06:46 PM
  #9  
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How long do you guys think a front DS will last running TF 3" lift (4-5" actual) doing moderate to difficult wheeling in an auto? A lot of people post up saying they damage their front DS on their very first wheeling trip...
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Old May 4, 2010 | 06:55 PM
  #10  
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Originally Posted by stlfan06
How long do you guys think a front DS will last running TF 3" lift (4-5" actual) doing moderate to difficult wheeling in an auto? A lot of people post up saying they damage their front DS on their very first wheeling trip...
Ripping a boot on a front ds is not the end of the world, which is what most people do on 2 and 4drs. You can still run a good while with a ripped boot in the front. The rear is a different story on a 2dr because of the extreme angle of the rezeppa joint at the top and it being under constant load all of the time , and it being the major one to get you from point a to point b. The 4dr rear is not at a bad angle at all on a lifted jk but the front is and more susceptable to failure than the rear. Hence, if your replacing one only on a 2dr, replace the rear first. In addition alot of folks may forego replacing the rear first because whether a 4dr or a 2dr you'll at least need rear upper adj ca's to set your driveline angle. But hey, what do I know.
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