anybody else get a driveline vibration after lift?

[C-RAIG]

I installed my toytec springs today and it felt like I have a driveshaft vibraton from 60-70 mph.
It seemed to get a little better the more I drove it. Just curious if anyone else had that happen?

 

[Taylor20]

Pinion angle

 

[Skidmarcx]

If it's 2WD you probably need a drive shaft spacer to bring the slip joint in the trans further

 

[C-RAIG]

It is a 4wd. It just seems odd that in all the builds I've read most people haven't changed their upper and lower links. This is a relatively mild lift compared to lc coils.

 

[snivilous]

Link geometry shouldn't cause vibrations. As Skidmarcx said you might need a spacer, on Jeeps if they get any kind of lift they install a slip yoke eliminator (SYE) so the driveshaft doesn't get pulled apart as much and cancel vibrations, though I've never heard anyone doing that on our rigs. If your U-joints are going out or for some reason I could maybe see that causing vibration issues.

 

[C-RAIG]

That makes sense. I was thinking maybe it was a little rough since the slip joint was in a new location. When I first got on the highway it was rough around 45, then 50-60 was bad. It seemed to get smoother the more I drove. Now it doesn't vibrate until around 70.

 

[sport05]

Did you get this figured out? I've got a pretty bad vibration after I installed the boss. Starts around 55 mph

 

[redrunn]

please help.

I just put pro comp 4'' lift rear coils. Horrible vibration at 100km/h or 60mph. On accel and decel the noise changes as well. I can tell its the ujoint, because i've changed it before. I noticed my rear diff has a problematic pinion angle. What is the solution to this?

Do people replace the lower trailing arms? Wouldn't this be expensive? How does a driveshaft spacer help?

 

[JRZEE2000TR4LTD]

I think there have been several people on here that concluded that the front CV joints may have been the cause of their vibration.

You say you can tell it's the Ujoint. Is that a mis type?