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post #1 of 13 Old 06-23-2013, 10:28 PM Thread Starter
Raimundo
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Caster

Anyone knows what is the factory caster setting for '93 ZJs? With the new coil springs and spacers I gave it about 1 1/2" lift, so I need to adjust the caster to factory set by rotating the differential towards the front, right? But I don't know how much. Thanks

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post #2 of 13 Old 06-24-2013, 04:23 AM
denn34
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It's going to be nearly impossible to do on your own, and get it right without an alignment
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post #3 of 13 Old 06-25-2013, 11:41 AM Thread Starter
Raimundo
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I already did alignment/balancing. Took it to a shop with one of those computerized ramps.But they didn't do caster The front suspension/steering is entirely new. It goes straight, doesn't pull to sides, but I'm getting this vibration at 60-65mph and bump steer sometimes. I feel like if the differential is "dancing" a rapid waltz from side to side!!May it be the "variable" rate coil springs? Poly isolators? Control arms?( all that from Autozone) ALL metal pars-tie rods etc are tightAny ideas as to why this is happening would be really appreciated. Thanks.
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post #4 of 13 Old 06-25-2013, 02:16 PM
HighLonesome
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The vibration is likely from a bad pinion angle. If you lifted it and didn't reset it I'd bet on it.
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post #5 of 13 Old 06-25-2013, 02:27 PM Thread Starter
Raimundo
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Hey HighLonesome!!!I really appreciate your input.( and others) See,,,I'm going crazy with this but now,,,,How do I reset that angle? I think I'm getting somewhere here. Please respond. Thanks again.
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post #6 of 13 Old 06-25-2013, 03:10 PM
speedbucket
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Keep the pinion inline with the driveshaft

http://www.jeepforum.com/forum/f22/speedbuckets-zj-build-1361322/
V8 zj at 6" . Double tri rear and true 3 link front. Stretched to 108"
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post #7 of 13 Old 06-25-2013, 03:20 PM Thread Starter
Raimundo
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wow! That's a hard ball jaja, So that means I have to rotate the differential a little towards the front right? I've been thinking for days, to remove the front drive shaft and drive it to see if it goes away,,,if so, that's it!!! I have to play with it 'till I get it right??..
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post #8 of 13 Old 06-25-2013, 03:26 PM
speedbucket
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The bolts should be closer to the rear of the eccentric slot than they were

http://www.jeepforum.com/forum/f22/speedbuckets-zj-build-1361322/
V8 zj at 6" . Double tri rear and true 3 link front. Stretched to 108"
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post #9 of 13 Old 06-25-2013, 03:37 PM
HighLonesome
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^this

These are the same bolts that adjust the caster. The lower control arm cambolts. Get it straight as you can. Whatever caster you end up with is what it is. Pinion angle takes precendence over caster.
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post #10 of 13 Old 06-25-2013, 03:59 PM Thread Starter
Raimundo
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Very Good!!!. I already rotated the differential a little,,I would say about 1/4", I know 'cause I marked the cam bolt position so, I guess I have to move it more
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post #11 of 13 Old 06-25-2013, 04:08 PM Thread Starter
Raimundo
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By the way guys, do ZJ's come with any kind of spacer between the steering gear case and the frame?. I saw it somewhere online and I wonder if that has anything to do with anything down there at all.I'll adjust that angle ASAP and post again. Thank you all.
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post #12 of 13 Old 06-25-2013, 04:26 PM
HighLonesome
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no spacer
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post #13 of 13 Old 06-25-2013, 05:20 PM Thread Starter
Raimundo
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good, thanks
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