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Author Topic: Slip yoke delimma.  (Read 2999 times)

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6099

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Slip yoke delimma.
« on: January 12, 2006, 06:45:51 AM »
Put on a 3.5inch BDS spring under. Awkwardly, the springs have moved the axle at least an inch forward cause the bumpstops don't lign up with the axle anymore. Is this supposed to happen? The slip yoke on the front shaft is now 3/4 way out at rest! I think it'll pop right out at full suspension compression.

Does this mean I've go to lengthen the shaft? Can't use a t case drop cause its already got a 3 inch body lift.

Help!  :(
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shotgun

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Slip yoke delimma.
« Reply #1 on: January 12, 2006, 07:39:05 AM »
I would have the front shaft retubed, Basically new shaft with old ends, and balanced. This would cure the amount of slip yoke you have and allow you to TJ shaft it in the future without getting an unbalanced vibration.
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goldenyj

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Slip yoke delimma.
« Reply #2 on: January 12, 2006, 08:09:20 AM »
The other option is to get an SYE kit and a CV driveshaft, this will generally give you a better ride, and as a side benifit, if you break your rear driveshaft or pinion or something you can limp home in FWD w/out leaking ATF all over the road.
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Offline bestos

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  • Posts: 129
Slip yoke delimma.
« Reply #3 on: January 12, 2006, 08:18:14 AM »
which jeep do you have?  for YJ i have never heard of a Front SYE/CV suggested because the front yoke is longer than say a TJ (that how it was explained to my by my XJ buddy).  that could be wrong.  

by the way, i would get a 1" body.  3" have always looked unsafe to me.  

i am sure you could get a longer front drive shaft fabbed - gonna cost a few bucks though.
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goldenyj

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Slip yoke delimma.
« Reply #4 on: January 12, 2006, 08:50:50 AM »
sorry I assumed he was talking about the rear shaft since as far as I know the front shaft doesn't have a slip in the yoke, it is in the shaft. The only feasable option for the front was already suggested, retube.
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Offline bestos

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Slip yoke delimma.
« Reply #5 on: January 12, 2006, 08:59:42 AM »
not to get off subject, so is the front Drive, CV? is that why you can use an XJ front shaft and shorten it for rear in a CV application?
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BlackYJ

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Slip yoke delimma.
« Reply #6 on: January 12, 2006, 09:05:31 AM »
YJs have fixed yokes with single u-joints at either end

TJs have fixed yokes but with a CV joint at the t-case and single joint at the diff.  The reason for this is because the front shaft is always turning
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Offline bestos

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  • Posts: 129
Slip yoke delimma.
« Reply #7 on: January 12, 2006, 09:18:26 AM »
So does anyone know what a typical price that he would have to get the drive shaft re-tubed or whatever it was called?
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shotgun

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Slip yoke delimma.
« Reply #8 on: January 12, 2006, 09:56:23 AM »
It varies, but I would say roughly less than $75 from a good reputable shop.
Depending on your needs you could  get a new woody for $150.
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Offline Jeffy

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Slip yoke delimma.
« Reply #9 on: January 12, 2006, 12:11:39 PM »
Seems weird that your driveshaft is pulled out so much with only a 3.5" lift.  How much of the slip joint is showing?
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goldenyj

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Slip yoke delimma.
« Reply #10 on: January 12, 2006, 12:59:43 PM »
good point jeff. I have  4" lift springs and mine only comes out about an inch, maybe 1.5"
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6099

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Slip yoke delimma.
« Reply #11 on: January 12, 2006, 08:23:21 PM »
"Seems weird that your driveshaft is pulled out so much with only a 3.5" lift. How much of the slip joint is showing?"

Yes, wierd. I reckon the BDS springs are longer than the OME so it automatically moves the axle forward. Right now it;s 2 inches pulled out.

Anyway, think I'll lengthen it. Seems like the only thing to do. Then I got to figure out a way to relocate the bumpstops.

Hey, just hit me, could you use a CV for the front shaft since I'm going to take it to be butchered anyway?

I can get one out of a cherokee front shaft.
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6099

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Slip yoke delimma.
« Reply #12 on: January 12, 2006, 08:27:25 PM »
"not to get off subject, so is the front Drive, CV? is that why you can use an XJ front shaft and shorten it for rear in a CV application?"

Yeay, I'm going to put in an SYE and a retubed front XJ shaft with CV for the rear of my jeep. Right teh stock shaft is sitting at almost 45 degrees without the SYE!
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shotgun

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Slip yoke delimma.
« Reply #13 on: January 13, 2006, 08:11:13 AM »
When you grab the XJ shaft grab the yoke as well. Alot of people save a couple bucks using an XJ shaft in the rear. I picked up a 231 and a front shaft out of a late 80 something in a local yard for $130. I think earlier I got both shafts for $45 from another XJ they had.

What these money savers do is this.

Measure for length.
Carefully grind out the weld with a cutoff wheel on the single U-joint end.
cutoff the extra length.
Carefully press/beat the end back on but leave a gap roughly 3/16 wide.
make sure the Double cardan pis alligned with the single u-joint yoke.
Weld it up.

Optionally they will take it and get it ballanced. The same basic thing happens  in a Drive shaft shop.  The money saver  to this is not buying a new double cardan joint. They probablly account for 1/2 the cost. My local shaft shop builds new rear shafts with a combination joint for more flex. the Double Cardan or cv end gets a 1350 center section with 1310 ends. about 18 months ago it cost me $275 for use with a hack and tap sye. But I also had heavier tube stock used.
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4x4cop

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Slip yoke delimma.
« Reply #14 on: January 13, 2006, 09:39:52 AM »
Quote from: "BlackYJ"
YJs have fixed yokes with single u-joints at either end
<snip>


No and yes. The rear is a slip yoke.

Quote from: "6099"
<snip>
Does this mean I've go to lengthen the shaft? Can't use a t case drop cause its already got a 3 inch body lift.

Help!  :(


What does a body lift have to do with a t-case drop??? I have both on my YJ.
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