post #1 of Old 09-18-2011, 07:25 PM Thread Starter
kyle_craig
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Outboarding Rear Shocks W/O SYE

So some of you might have seen my build, most of you may not have. Anyway, I'm getting ready to do a 44 rear swap and a 5" rear stretch via XJ leafs (much like Red_Smoke's build). Anyway, I'm still running the stock cross member/skid and slip yoke style drive shaft. During the stretch, I'll be stretching my factory drive shaft. (Eventually, I upgrade to an SYE/belly up, just not right now). I'm considering out-boarding the rear shocks using ford shock towers and some 12" travel shocks and knocking that out during my stretch/axle swap..

What's holding me back is the fact that I'm still running the factory slip yoke. I can't have the drive shaft fall into two pieces during articulation. Is this possible? Has anyone on here out-boarded to 12" travel shocks with a factory slip yoke? I need some input as soon as possible!

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post #2 of Old 09-18-2011, 07:41 PM
freeskier93
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Just do an SYE....

CU Boulder Aerospace Engineering
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post #3 of Old 09-18-2011, 07:46 PM
Bordr329
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Why are you using leaf springs?
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post #4 of Old 09-18-2011, 07:50 PM
Jankoid
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Just get a sye. A hack & tap sye is pretty cheap, or you can use limiting straps as a short term solution to limit your travel.
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post #5 of Old 09-18-2011, 07:50 PM
ytowntj
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I cant speak for your amount of stretch, but with no shocks Ive cycled through what I determined to be around the limits of ~11 in travel shocks outboarded in preparation for mine. On 2.5 rear springs With the way I have my rear pinion angle adjusted I have no DS issues. Im running a chopped down XJ shaft for the length ( I have ~ 1.5 inches of "fudged" stretch with a new TB mount.)

I intend to outboard over winter break and relocate the coil perches. It looks completely plausible w/o a DC shaft and SYE with the setup I have now. If you save the DS for last and cut to fit I would think you would be ok.
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post #6 of Old 09-18-2011, 08:14 PM Thread Starter
kyle_craig
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Quote:
Originally Posted by ytowntj View Post
I cant speak for your amount of stretch, but with no shocks Ive cycled through what I determined to be around the limits of ~11 in travel shocks outboarded in preparation for mine. On 2.5 rear springs With the way I have my rear pinion angle adjusted I have no DS issues. Im running a chopped down XJ shaft for the length ( I have ~ 1.5 inches of "fudged" stretch with a new TB mount.)

I intend to outboard over winter break and relocate the coil perches. It looks completely plausible w/o a DC shaft and SYE with the setup I have now. If you save the DS for last and cut to fit I would think you would be ok.
I take it the XJ shaft has a slip yoke??
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post #7 of Old 09-18-2011, 08:27 PM
Jankoid
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Quote:
Originally Posted by kyle_craig View Post
I take it the XJ shaft has a slip yoke??
XJ front shafts, as well as TJ front shafts, are CV style.
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post #8 of Old 09-18-2011, 08:37 PM
Jasons4x4
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Let's assume for the moment that you can do what you want with the stock slip yoke driveshaft. You admit that you will have to lengthen your stock driveshaft to make it work. You also said you want to upgrade to an SYE later, which means you're going to have to discard your modified stock driveshaft and buy another custom shaft. SYE kits aren't that expensive, the bigger expense is usually the new driveshaft. I bought my SYE from Performance Off Road Center for like $180. If you're spending all this money on all this custom work, there is no good justification for not buying a $180-200 SYE kit and just doing the driveshaft once instead of having to pay to have your driveshaft modified twice. That's my opinion.
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post #9 of Old 09-18-2011, 08:45 PM Thread Starter
kyle_craig
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Thanks for answering my question guys!
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post #10 of Old 09-18-2011, 08:49 PM
ytowntj
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No, mine was an XJ rear DS. Essentially identical to a TJ rear shaft but longer. I cut out a portion of the center and sleeved the whole thing to ensure true-ness. I drilled 5/8th holes in the tube used for sleeving before I pressed the two pieces of the XJ shaft in. I welded the ends and also the holes fully. Then ground the holes flat. Havent had an issue yet.

I too plan on doing a SS SYE and Tom woods shaft when I build my fully flat skid. Right now I dont have 450$ bucks to shell out. The XJ shaft cost me 0$. Cutting/welding it cost me less than five. The Steel tubing was bought as scrap and maybe ten bucks. Getting it balanced was done as a favor. So far I have a driveshaft setup that runs smooth at 70 mph, doesnt bind too bad under heavy flexing, will work temporarily when I outboard, and cost a grand total of 15 bucks. hmmm sounds like a terrible route to go on a college budget.
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post #11 of Old 09-18-2011, 08:50 PM
ytowntj
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Although I do recall seeing an XJ front shaft cut down and used with a SYE. That might not be a bad route to go either.
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post #12 of Old 09-18-2011, 08:57 PM Thread Starter
kyle_craig
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Quote:
Originally Posted by ytowntj View Post
No, mine was an XJ rear DS. Essentially identical to a TJ rear shaft but longer. I cut out a portion of the center and sleeved the whole thing to ensure true-ness. I drilled 5/8th holes in the tube used for sleeving before I pressed the two pieces of the XJ shaft in. I welded the ends and also the holes fully. Then ground the holes flat. Havent had an issue yet.

I too plan on doing a SS SYE and Tom woods shaft when I build my fully flat skid. Right now I dont have 450$ bucks to shell out. The XJ shaft cost me 0$. Cutting/welding it cost me less than five. The Steel tubing was bought as scrap and maybe ten bucks. Getting it balanced was done as a favor. So far I have a driveshaft setup that runs smooth at 70 mph, doesnt bind too bad under heavy flexing, will work temporarily when I outboard, and cost a grand total of 15 bucks. hmmm sounds like a terrible route to go on a college budget.
College budget=is exactly what I'm dealing with...Doesn't sound like a bad way to go at all. I might have to give the Junk yard a call and see how much they want for an XJ drive shaft.
I'd do it all at once if I could guys...Just like this guy, I don't have 450 to toss at this portion of the project at this point...
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post #13 of Old 09-18-2011, 09:05 PM
Jankoid
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A hack & tap sye for $100 and a junkyard XJ CV shaft is budget friendly way to go.
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post #14 of Old 09-18-2011, 09:16 PM Thread Starter
kyle_craig
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Quote:
Originally Posted by Jankoid View Post
A hack & tap sye for $100 and a junkyard XJ CV shaft is budget friendly way to go.
I'll have to look into that option aswell...
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post #15 of Old 09-18-2011, 09:48 PM
Bennettj13
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If you are paying to lengthen the stock DS, why not just wait and save some more money until you can do the SYE and DS together instead of doing it again?

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