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-   -   Stupid Driveshaft Questions (http://www.wranglerforum.com/f218/stupid-driveshaft-questions-251934.html)

Mowrangler 06-26-2013 04:46 PM

Stupid Driveshaft Questions
 
i just recieved my 1995 YJ 2.5 5 speed it was a repo that I bought sight unseen. It was missing both drive shafts, it has stock springs , spring over axle and stock shackles.
#1 Will stock length driveshafts work?

#2 On the front shaft does the slip end go on the top (transfer case) or the bottom (Differential side)

Any input would be appreciated.:confused:

AllMudd 06-26-2013 05:57 PM

#1 No with spring over the axle you need custom rear drive shaft.

#2 slip goes closest the front axle.

Mowrangler 06-26-2013 07:11 PM

Looks like a trip to the driveshaft shop, will the front be OK?

WOKNROX 06-26-2013 07:36 PM

Yes

AllMudd 06-26-2013 07:37 PM

Not sure on that one. I haven't honestly heard of many ppl that change it out. Maybe someone will chime in or go ahead and search SOA and ask someone that has SOA what the did. I have a 4" lift with stock driveshafts but most of the time ppl suggest the SYE for the transfer case.

WOKNROX 06-26-2013 07:54 PM

I already answer him....WoW that made me sound like a jerk....lol
The stock front shaft will work just fine....
Hopefully you already have a SYE kit in stalled in the TC....that way you'll just need your local DS shop to make one up for you...

Mowrangler 06-26-2013 08:11 PM

No doesnt have a SYE installed just a splined shaft sticking out of the transfer case.
I am not planning on a lot of serious suspension travel just some mud puddles. Just trying to get this thing somewhat functional.http://s450.photobucket.com/user/54G...38303122785265

Mbclark 06-26-2013 08:41 PM

Quote:

Originally Posted by Mowrangler (Post 3902960)
No doesnt have a SYE installed just a splined shaft sticking out of the transfer case.
I am not planning on a lot of serious suspension travel just some mud puddles. Just trying to get this thing somewhat functional.http://s450.photobucket.com/user/54G...38303122785265

In response to allmudd's comment. I have a SOA and SYE. With the SOA you get about 5.5" of lift on stock springs and the SYE is pretty much required. They say max lift to avoid SYE is 4" and even then you should install a t-case lowering kit. My guess is the reason it didn't have driveshafts is because someone didn't finish the project, they were probably going to install a SYE then have the new shaft made.

Mbclark 06-26-2013 08:43 PM

Quote:

Originally Posted by Mowrangler (Post 3902264)
i just recieved my 1995 YJ 2.5 5 speed it was a repo that I bought sight unseen. It was missing both drive shafts, it has stock springs , spring over axle and stock shackles.
#1 Will stock length driveshafts work?

#2 On the front shaft does the slip end go on the top (transfer case) or the bottom (Differential side)

Any input would be appreciated.:confused:

And no question is "stupid" We all get stumped sometimes and that's why this forum is so cool!

Mowrangler 06-27-2013 07:30 AM

Quote:

Originally Posted by Mbclark (Post 3903057)
In response to allmudd's comment. I have a SOA and SYE. With the SOA you get about 5.5" of lift on stock springs and the SYE is pretty much required. They say max lift to avoid SYE is 4" and even then you should install a t-case lowering kit. My guess is the reason it didn't have driveshafts is because someone didn't finish the project, they were probably going to install a SYE then have the new shaft made.

I would have thought that but by the way the underside of the truck looks it has been out in the mud a bunch since the soa .It also appears they have dropped the skid plate about an inch and all 4 springs appear to be sagging.

89Saharagreen 06-27-2013 07:35 AM

I am going to go out on a limb and say they had stock drive shafts and blew them out on the trail because they did not do the slip yoke eliminator.

Can you post a pic of the shaft? and the rear tail housing we will know for sure from that.

Also look for any damage! If I am wrong and I hope I am then you may just need a custom rear drive shaft to get it on the road so to speak.

Chief

Mowrangler 06-27-2013 05:23 PM

Cant post pics of the driveshafts they are mia,no apparent damage to the transfer case. just got replacement shafts today both front anf rear fit perfect and have plenty of travel.Will update after I get the thing on the road.

OverkillYJ 06-27-2013 08:51 PM

If you dont know Jeeps, you need to have someone who does go over it in detail. Or post a ton of pics of steering, springs, trans, TC, skid plate, basically everything. X2 on this sounding like an unfinished project. If you drive it after just throwing driveshafts in it that could be the end of you and the Jeep. I would at least expect you get driveshafts cut to cusomte lengths, need to change stuff to make it work and then need them re-cut.

Mowrangler 06-29-2013 04:46 PM

Apparently the PO didnt get the rear u-joint in the saddle correctly with one cup on the tab and oner inside the tab so when the driveshaft let loose it damaged the rear yoke and bent the rear output shaft slightly ruining the extension housing. I mocked it up w/o the housing and the shaft is the correct length and ujoint angles are near perfect.So now I need a new output shaft and a rear yoke. I really do not want to spend the money on a sye because this jeep will not see extreme off road use.

OverkillYJ 06-29-2013 05:18 PM

Quote:

Originally Posted by Mowrangler (Post 3911929)
Apparently the PO didnt get the rear u-joint in the saddle correctly with one cup on the tab and oner inside the tab so when the driveshaft let loose it damaged the rear yoke and bent the rear output shaft slightly ruining the extension housing. I mocked it up w/o the housing and the shaft is the correct length and ujoint angles are near perfect.So now I need a new output shaft and a rear yoke. I really do not want to spend the money on a sye because this jeep will not see extreme off road use.

Sye is for correct angles, not extreme Offroad use. It is only because people are lifted they have them, but because they are offroading. If your angles aren't good the vibes will destroy other components over time and cost you way more than the sye. Eliminating vibes is the key. If you need an sye to do that then you need an sye to do that.

If they were running stock shafts I would bet anything the horrible angles caused the ujoints to fail, and it probably vibrated like a giant dildo rolling down the road.

Mowrangler 06-29-2013 05:49 PM

I will bet the failure was due to improper installation of the rear u-joint in the yoke, the cups were still in the yoke but the rest of the joint and shaft were mia.One cup was in its proper place but the other was on the lip, both the cups ,ubolts and the yoke were badly mangled. I dont know if I will have bad vibes till I fix the problems I know I have.There is another member of this forum who has a sticky on soa's who says he has done a ton of them and has never had to go with a sye or a CV shaft.I will say that I would like to see the driveshaft to be about 1.5" longer to make the seal ride in its normal place on the yoke but that is all I think I MAY need. What bI doo need now is a replacement yoke for the rear and a replacement output shaft for the t-case. Cheap?

AllMudd 06-29-2013 05:55 PM

Mowrangler- you need the rear yoke for the dana 35? And the output shaft for the TC?

Mowrangler 06-29-2013 06:05 PM

Yes ALLMUD that is correct, After i do that I will see if there is any other problems.I any one has these please Pm me with a price shipped to 33611 Thanks

OverkillYJ 06-29-2013 06:41 PM

I know Ibuildembig does not use SYE kits. 99% of everyone else does. It reduces the angle. Less angle = less stress. Stress causes failures. I also think he usually drops the TC an inch or two. You would have to ask him though.

Mowrangler 06-29-2013 07:58 PM

Overkill my Transfer case has been dropprd about 1.75" and the driveshaft angles look near stock as compared to a friends YJ I just looked at. His has not been lifted or modified my driveshaft couldnt be more than a degree or so different. Once I replace the yoke and the output shafr I will probably have to have the shaft lengthened ahout 1.5-2.0 inches to insure proper travel.

OverkillYJ 06-29-2013 08:05 PM

Quote:

Originally Posted by Mowrangler (Post 3912313)
Overkill my Transfer case has been dropprd about 1.75" and the driveshaft angles look near stock as compared to a friends YJ I just looked at. His has not been lifted or modified my driveshaft couldnt be more than a degree or so different. Once I replace the yoke and the output shafr I will probably have to have the shaft lengthened ahout 1.5-2.0 inches to insure proper travel.

When you measure to have it lengthened make sure you measure from the yoke center with the slip into where the wear Mark is on it. If you are dropped 1.75" you will be fine. You are equal to about 3.75" lift on your driveline.

harleydragon 06-29-2013 08:14 PM

my yj is soa with stock driveshaft and no vibration.transfer case is dropped 1 1/4 inches.I would like for the driveshaft to be about an inch longer but it does not get extreme 4 wheeling..I have put about 10,000 miles on it in the last year with no problems

Mowrangler 06-29-2013 08:19 PM

Thanks Overkill that is just about what I estamate where I will be. Next step is to replace damaged yoke and output shaft then mesure and have driveshaft legthened.
I have located a yoke but I still need a tc output shaft. Thanks everyone for your input I have been working on cars for 42 years but this is not an area that I work on often . Thanks

Mowrangler 06-29-2013 08:26 PM

harleydragon sounds like you and I are in similsr situations I am going to put this thing back together and see what I have. The only difference is my po was an idiot and couldnt put in a driveshaft correctly. This YJ will see some mud puddles ,some sand and a few slippery boat ramps no extreme use and very little high speed use.Heck I dont put 5K a year on my daily driver. Thanks for your help.

OverkillYJ 06-29-2013 08:29 PM

Quote:

Originally Posted by Mowrangler (Post 3912350)
Thanks Overkill that is just about what I estamate where I will be. Next step is to replace damaged yoke and output shaft then mesure and have driveshaft legthened.
I have located a yoke but I still need a tc output shaft. Thanks everyone for your input I have been working on cars for 42 years but this is not an area that I work on often . Thanks

I got a tc mainshaft. Give me what you think it's worth and cover shopping and its yours.

OverkillYJ 06-30-2013 04:50 PM

This is the part you need.


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