A friend and I installed a lift on his discovery I. Was suppose to only be 2" lift. But he got sent the heavy duty springs instead of medium rate. After the install he has a bad vibration. Changed all u joints and still there. Shaft angles are pretty steep. Have done a lot of reading and have never read that driveshaft angles would play a problem with the 2" lift. But since he got heavy duty springs the lift is probably over 2". What can we do to fix the vibration. Any way of changing the pinion angle? I know double cardon shafts are probably a must now. Thanks for any info!

 

The easiest way to tell if its a driveshaft vibe is to lock the transfer case and pull the front shaft. If the vibe is gone then thats the problem same way with the back. I had to run a double cardan shaft in the front of mine after I installed a 3" lift in it because of a steep angle at the transfer case. As far as changing pinion angle your kinda screwed there if you turn the pinion up in the front youll move your caster and that leads into a whole other mess of problems.

 

http://www.rovertym.com/index.php?pa...art&Itemid=119

http://www.rovertym.com/index.php?pa...art&Itemid=119

A good place to start. Of course, if he does not want to spent the extra $, it would be cheaper to pull the springs and buy different(lower) ones.

 

What spring kit did he buy?

 

sounds like me...double cardan here we come

 

Wait it is me

 

yes it is.