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Old 12-28-2013, 11:01 PM
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stretch leaf sprung?

Is it possible to extend axles while using leaf springs?

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Old 12-29-2013, 07:00 AM   #2
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sure

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Old 12-29-2013, 10:48 AM
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sure
How would one go about that?
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Old 12-29-2013, 10:52 AM   #4
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How would one go about that?
Redrill your leafs and add a new leaf pack bolt, or use Waggoner front leafs for fronts and back if you plan on spring over axle.
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Old 12-29-2013, 11:36 AM
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Redrill your leafs and add a new leaf pack bolt, or use Waggoner front leafs for fronts and back if you plan on spring over axle.
Ok there's some food for thought thanks
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Old 12-29-2013, 01:17 PM   #6
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You can look up various leaf spring charts to see what may work best for your needs/wants. Basically checking overall lengths, widths, and centerpin locations.

Once you decide on either using the entire pack, or mix & match from your current packs, you can dial-in the packs.

Here's one chart for you to look at to see what I'm talking about: Misc. Spring Information
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Old 12-29-2013, 01:26 PM   #7
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XJ springs will give you like 6 inches and are all over the place...
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Old 12-29-2013, 01:51 PM
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Here's one chart for you to look at to see what I'm talking about: Misc. Spring Information[/QUOTE]

Right on. You wouldn't happen to have a chart like this for a YJ would you?
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Old 12-29-2013, 01:52 PM
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XJ springs will give you like 6 inches and are all over the place...
Cool I'll look into that
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Old 12-29-2013, 01:53 PM
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So once you get the springs that put the axles where you want them, do you need new driveshafts? What would be the stretch limit for stock driveshafts?
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Old 12-29-2013, 02:14 PM
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XJ springs will give you like 6 inches and are all over the place...
Do you mean just using the rear XJ springs on the rear of the YJ, or 2 sets of XJ rear springs for the front and rear of the YJ?
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Old 12-29-2013, 02:19 PM   #12
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The 4th entry down on that chart has the YJ specs.

IIRC, the stock front YJ shaft has ~3.5" to 4" of slip in the splines. Not all YJ front or rear drive shafts are the same length or diameter. It depends on your comfort zone as far as how much slip is left engaged while the axle is at full droop.

I rebuild, lengthen or shorten drive shafts myself since its so easy. If it needs a re-balance, I cross that bridge if it develops a vib. What I'm getting at is you don't need new drive shafts if you can either shorten or extend them yourself.
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Old 12-29-2013, 02:22 PM   #13
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Yeah new drive lines are good. I would think with no lift you could stretch maybe an inch or so... Not sure though. You can redrill your perches too for a little stretch I think...

I know Im planning on new drivelines after soa, 8.8 and a little stretch. 2 up front and 6 out back.
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Old 12-29-2013, 02:26 PM   #14
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Do you mean just using the rear XJ springs on the rear of the YJ, or 2 sets of XJ rear springs for the front and rear of the YJ?

Each set of XJ springs can give you 6 inches of stretch. So if you put a set out back you will move the axle back 6". If you put them front and rear you will get 12" total.

Did you read through Norcal_Chris build thread yet? He does XJ springs I think...
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Old 12-29-2013, 02:30 PM
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Originally Posted by OregonPlinker View Post

Each set of XJ springs can give you 6 inches of stretch. So if you put a set out back you will move the axle back 6". If you put them front and rear you will get 12" total.

Did you read through Norcal_Chris build thread yet? He does XJ springs I think...
Ok cool thanks. No I forgot to check out his thread I know you said that before thanks for reminding me.
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Old 12-30-2013, 10:12 AM   #16
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but how much can you stretch the front ( and rear ) before you get into major modifications ? IE moving fuel tank, custom steering etc. ??

and easiest way to do this is ?
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Old 12-30-2013, 05:26 PM   #17
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but how much can you stretch the front ( and rear ) before you get into major modifications ? IE moving fuel tank, custom steering etc. ??

and easiest way to do this is ?
Generally, about an inch or so depending on the current set-up.

As far as ease goes, either use a spring perch & spring plate with an offset centerpin hole, or swap in a set of leafs with an offset centerpin.

Like I did to my old front axle here: Extending wheelbase - it doesn't get much easier than this - JeepForum.com
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Old 12-30-2013, 06:45 PM   #18
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As you can see by Joe's video , he did not drill his leaf springs . It's a bad idea and causes a weak point in the springs .
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Old 12-30-2013, 06:53 PM
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Originally Posted by Joe Dillard View Post
Generally, about an inch or so depending on the current set-up.

As far as ease goes, either use a spring perch & spring plate with an offset centerpin hole, or swap in a set of leafs with an offset centerpin.

Like I did to my old front axle here: Extending wheelbase - it doesn't get much easier than this - JeepForum.com
Would this be the same for SUA?
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Old 12-30-2013, 07:01 PM   #20
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just my opinion..you are better off to leave the springs and spring perch pins/holes where they are and either change to a longer spring and/or move the spring mounts for the stock springs
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Old 12-31-2013, 08:22 AM   #21
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its a good post and video.....but is a additional inch or so worth it ? most offroading I do is running around my land.
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Old 12-31-2013, 08:26 AM   #22
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its a good post and video.....but is a additional inch or so worth it ? most offroading I do is running around my land.
no,not to me..when I stretch one,it is at the same time that I am outboarding the spring hangers for full width axles and it gets stretched a lot more than 1 inch
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Old 12-31-2013, 10:15 AM   #23
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I just installed one tons and moved my front axle forward 5 inches . I changed to a 4 link from leaves though .

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