vibes w/ RC lift -
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Unread 04-24-2002, 10:45 PM   #1
93 Blue Demon YJ
Registered User
Join Date: Mar 2002
Location: Mississippi/Colorado
Posts: 200
vibes w/ RC lift

After I put my rough country lift on I got some minor vibration, it is the worst about 60-65 mph. I noticed that I got 4.75" lift on that 3" kit (my old springs were kinda flat). I am hoping that when the springs settle down a little it will improve. I put the drop kit in for the transmission, u-joints and trans. mount are new. Any other ideas?

'93 YJ 4.0 3" RC lift 15x10 wheels and 32" tires.
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Unread 04-25-2002, 05:27 AM   #2
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2000 TJ Wrangler 
Join Date: Sep 2001
Location: Charleston, SC
Posts: 552
Rough country has been mixing up the shims. Check to see what degree shim you have. Yours should be 3 degrees with a stock drivetrain I believe. Mine has to be 6 degrees because I have a SYE.

I can send you mine when I get done if yours aren't the correct ones.
93' YJ
00' TJ
02' KJ
04' Dodge Ram

"Jeep mechanic wanted: must be able to put square peg in round hole"
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Unread 04-25-2002, 07:55 AM   #3
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Join Date: Mar 2002
Location: payette,Idaho
Posts: 613
i had to change the shims on mine to get it not viberate anymore. I even called RC and they said that no one had ever called with that same problem LOL ya right. I went with a 2.5 degree shim on mine. but i also have a 1 inch shacle lift which changed the drive line angle just slightly. Its kinda a pain to change the angle of the shims though on the axle. I had to brake the old shims off the springs and then replace the bolt that holds the shims together and then put the new anglle shim back on. fixed the probblem.
Daniel Mclay

93 wrangler 8 inch SOA SRS suspention lift 35/12.50 Mt. efi 350 700r4 tranny np 205 t case dana 44s front and rear. lots of extras.
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