93 wrangler vibration after lift - JeepForum.com

 
LinkBack Thread Tools
post #1 of 9 Old 07-23-2013, 03:38 AM Thread Starter
Rjmklm
Registered User
1993 YJ Wrangler 
 
Join Date: Jul 2013
Location: Spring hill
Posts: 5
93 wrangler vibration after lift

Hello all, great site, thanks to all for their questions and all the answers

I just bought a 93 wrangler, 6 cyl, 5 speed worth 31 tires. I put in a 2.5 rough country lift. After the lift, it felt like it was binding and difficult to get up to speed in any gear. Called rough country (RC) they suggested lowering the transfer case 1/4 inch. I did and it helped and I had the front aligned. But, I still have a shimmy in the transmission when I start in 1st gear, a vibration in 2nd, 3rd, and 4th gears during accel and deceleration. If the clutch is pushed in or put into netural, the vibration disappears.

Is this a u-joint, driveshaft or clutch problem


Thanks in advance for your responses.

Rjmklm is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 07-23-2013, 04:43 AM
superj
Registered User
 
Join Date: Mar 2008
Location: corpus christi
Posts: 7,057
do search really quick for lift vibe and check out a few threads. i think tons of people had the same trouble but i don't remember what the usual trouble is.

I don't feel like working on anything at this time so i sold my yj.
superj is offline  
post #3 of 9 Old 07-23-2013, 04:50 AM
estrunk
Registered User
 
Join Date: Jun 2013
Location: Chambersburg
Posts: 4
I had the same issue on my 95 YJ after installing the same lift. I'm guessing that you got closer to 3" of lift. If that happened you will need to install a slip Yolk Eliminator and new rear drive shaft. As soon as I did this the vibration stopped.
estrunk is offline  
post #4 of 9 Old 07-23-2013, 05:38 AM Thread Starter
Rjmklm
Registered User
1993 YJ Wrangler 
 
Join Date: Jul 2013
Location: Spring hill
Posts: 5
Where did you buy the yoke and shaft
Rjmklm is offline  
post #5 of 9 Old 07-23-2013, 06:03 AM
UZI4U
Registered User
1993 YJ Wrangler 
 
Join Date: Aug 2011
Location: Black Hills
Posts: 687
Search SYE and everything about it will pop up.

MCLMM
UZI4U is offline  
post #6 of 9 Old 07-23-2013, 07:15 AM
jokerchief462
Registered User
1989 YJ Wrangler 
 
Join Date: Nov 2010
Location: Sin City
Posts: 2,881
Go to Tom Woods home page and halfway down right side grey banner labeled Technical Information and Sponsors. Open that and start reading. It has more than you want to know about drive shafts and pinion angles.

Pay close attention to two pictures of the drive shady angles.

Without an SYE and double cardon joint shaft your pinion angle is level with the T-Case. With your lift kit I bet you had wedges on the rear springs which have you pinion angle up.

Get a magnetic angle finder at a hardware store and figure out what you have and then go from there.

89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.

AF Jeep Club Tail #184
jokerchief462 is offline  
post #7 of 9 Old 07-23-2013, 09:41 AM
kahanabob
Registered User
1992 YJ Wrangler 
 
Join Date: May 2010
Location: Maui
Posts: 507
post a pic of your driveline angles if you can. 1/4" TC drop is not much, 1" is standard. did you install any shims on the rearend?
kahanabob is offline  
post #8 of 9 Old 07-23-2013, 01:44 PM
cojab
Registered User
1993 YJ Wrangler 
 
Join Date: Oct 2010
Posts: 1,318
Before you get the SYE check your drive shaft angles. Your transfer case yoke and rear pinion yoke angles should be the same. You can correct that with shims. (get steel ones not aluminum if you need them) Also double check to make sure your yokes on the driveshaft are timed correctly (in line with each other. not sure how else to describe that) That can cause vibrations as well.
cojab is offline  
post #9 of 9 Old 07-23-2013, 05:28 PM Thread Starter
Rjmklm
Registered User
1993 YJ Wrangler 
 
Join Date: Jul 2013
Location: Spring hill
Posts: 5
I spoke with Eric at SBC today, he gave great advice and I made all the suggested checks. Then I lowered the t/c to a total of 1/2 inch and the yoke is back in the original position. Test drive was perfect. Thanks to all that posted.
Regards, Rod

Looks like SBC will be my vendor in the near future.
Rjmklm is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome