Rear pinion angle -

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post #1 of 5 Old 04-11-2010, 02:22 AM Thread Starter
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1991 YJ Wrangler 
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Rear pinion angle

So my rear drive shaft binds at full droop, and since I'm going to SOA the jeep in the near near future, I need some input. NOT going to run a transfer case drop because of my skidplate.

Right now I have 3" lift springs, and the shaft binded at ride height, so I built some 5.5" shackles, and now it only binds about 2" from full droop. from ride height I get about 6" of droop. So, if I run like an 8* shim, would that correct my driveshaft enough? Also, whats the bad about having a high pinion angle? I know its bad for a CV shaft, but I never heard anything about a u-joint.

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post #2 of 5 Old 04-11-2010, 06:03 AM
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1993 YJ Wrangler 
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Add a SYE and CV shaft and tilt the pinion up as that requires. Re-weld the perches, don't do shims. Do a proper suspension lift as the tires need and loose the long shackles. Do the job right and it will last and not give problems.

'93 YJ, '02 GM 4.3V6, SOA, dual ARB's, 8.8+D30(WarnHubs), 4.88s, 35" BFG KM2s, AX15, NP231+4:1+SYE+2LO, York OBA, Warn M8000.
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post #3 of 5 Old 04-11-2010, 07:02 AM
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Not to hijack this thread, but I am replacing my tranny and t-case with an automatic and Atlas. Have removed the perches on my 8.8 and plan on pointing the diff directly at the t-case to line things up, then dropping the angle by 2-3 degrees. I have TW CV shafts and believe this should do the trick. Any thoughts on this process?

When I did the 8.8 I ended up with the pinion too high and don't want to go through this again. Thanks.
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post #4 of 5 Old 04-11-2010, 08:48 AM Thread Starter
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my shackles aren't that long? As far as the CV goes, soon as I blow out this axle I was planning on going SOA. And I really don't see any justification in getting a new rear shaft and having to lengthen it in 2 months anyways.. I have plenty of time to tinker with the jeep and not so much money

uploaded from my phone so I couldn't resize it...
Also, these shackles are 1.5"x1/2" tubing backed against 1/4 plate.
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post #5 of 5 Old 04-11-2010, 03:22 PM Thread Starter
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Has anyone ever kept the slip yoke and used a double cardon joint? thats my plan as of right now
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