x91j

Ok so i just installed a 2 inch lift on my 91 cherokee and im getting vibs at 25-35 and 55-65 should i do a 1 inch transfer case drop? never happend until the lift.

posjeepxj

in isnt really enought to get drive line vibes. make sure everything is tight. rotate tires. is it alligned?

x91j

ya i got it aligned today. the vibes came at 25mph and goaway right after 35 then start back at 55 then go away right after 65

96Cherokee113

I'd check your U-joints first. They were in the same position for a long time and now that the lift is on, the angle changed slightly. I'd change the U-joints first before you do a transfer case drop. Just my opinion, though.

x91j

idk if this matters i have 2 inch shackles in the rear. u joints were changed 2 months ago

posjeepxj

That might do it. shackles throw your rear pinion angle off. your rear pinion should be parrelell with your t-case. i bet you money it isnt now. they make shims to correct this

x91j

is there a way i can make these?

posjeepxj

they are cheap i think. probably cheaper than you tring to make them

x91j

got a site by any chance?

posjeepxj

Basic driveline geometry
http://www.4xshaft.com/index.html

posjeepxj

first shims to pop on google
http://www.summitracing.com/search/P...n-Angle-Shims/

i bet the shop where you had it aligned has them to

XJ4life92

rustys offroad also has really cheap shims.

claygrassmann

i say do the drop its cheap and easy you can just use hockey pucks for it

superj

i did 2" shackles on the back of my lift and it actually got rid of an annoying vibe i had but i think it was cause someone had the wrong lug nuts on the truck. two huge ones right nest to each other while hte rest were stock ones.

95yeti

i never knew you could use hockey pucks