Front Driveshaft Vibes - JeepForum.com

 
LinkBack Thread Tools
post #1 of 4 Old 10-25-2012, 09:57 AM Thread Starter
Randonexplosion
Deplorable
 
Randonexplosion's Avatar
1988 YJ Wrangler 
 
Join Date: Sep 2010
Location: Cortez
Posts: 7,375
Front Driveshaft Vibes

I have been trying to fix my front driveshaft vibes for a while now but I haven't been too concerned since it isn't my DD. I swapped in a junkyard D30 for the gear ratio, and immediately installed an Aussie. On the first test drive I got some pretty bad vibes. I realized that my driveshaft was visibly warped, so I got it retubed and they put in a new slip joint because the old one was loose and banged out. The vibes actually got worse so I got the shaft balanced. They said it wasn't too far out, but they got it balanced well. That helped quite a bit but I still get vibes that gradually worsen from about 50 and up. Without the front shaft everything is peachy. Any ideas on things to check? If memory serves the pinion seemed tight. I guess it could be bent?

Randonexplosion is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 10-30-2012, 03:14 PM Thread Starter
Randonexplosion
Deplorable
 
Randonexplosion's Avatar
1988 YJ Wrangler 
 
Join Date: Sep 2010
Location: Cortez
Posts: 7,375
nobody?
Randonexplosion is offline  
post #3 of 4 Old 10-30-2012, 05:44 PM
RaggedOleMan
Registered User
2005 TJ Wrangler 
 
Join Date: Jul 2007
Posts: 2,353
I did the exact same thing, swapped out my d30 for the gearing, and had a front drive line vibe after the swap. All it took to solve mine was to remove the drive shaft from the axle, rotate it 180 and bolt it back in. I tried that BEFORE I took it to have it balanced. My thinking was there weren't any vibes before I pulled it, therefore nothing about the shaft could have changed other than it's orientation to the axle pinion. Hell it only takes 5 minutes, and a quick test drive to evaluate the results. If it doesn't work, go on to plan "B".

Drive shaft u-joints okay? If so...

My next thought is that the new/donor axle isn't square to the frame, resulting in the vibes. Worth checking...
RaggedOleMan is offline  
post #4 of 4 Old 10-30-2012, 05:52 PM Thread Starter
Randonexplosion
Deplorable
 
Randonexplosion's Avatar
1988 YJ Wrangler 
 
Join Date: Sep 2010
Location: Cortez
Posts: 7,375
Well I didn't really get the chance to test it before putting in the aussie. I thought that the driveshaft doesn't really spin on a YJ without a locker? I could tell that the shaft was visibly warped. Also the U Joints were the first thing I replaced to try to fix the vibes. As far as I can tell the axle is straight. I swapped it in with no problems and recently put new springs in and everything lined up fine. Also I have had the driveshaft in and out so many times I'm sure I would have gotten the orientation right at least once? great suggestions though!
Randonexplosion 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