3" Lift is on, have a thunking sound...

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XJeffro

NAXJA Forum User

Location

Indiana, PA

• Sep 2, 2003

• #1

I just put my 3" lift on my 95 sport. I have springs up front, AAL in rear, and all new shocks. When I brake hard, I get a small thunking sound. I think it is the U-bolts twisting and riding forward. Anyone else have this? Can this be solved with a few shims?

Also, I have a little bit of vibration at speed. Whats the best to remedy this?

 

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Speed_racer

NAXJA Forum User

Location

Ft Myers, Florida

• Sep 2, 2003

• #2

Put a .5" spacer between your xmember and your frame... also, the clunk is due to the new shocks/springs setlling... they will clunk n clunk.. im sure you offroad it, youll hear it when it flexes also, even if youre not braking

 

xj92

NAXJA Forum User

Location

Junction City, KS

• Sep 2, 2003

• #3

I second what speed racer said. When you brake hard your rear end comes up just slightly, causing your u-joint to bind on the rear driveshaft, that is the clunking noise. Drop the t-case .5" and it will fix it.

 

2xtreme

NAXJA Forum User

Location

Kayak Pt, WA

• Sep 2, 2003

• #4

There are lots of thing that can cause clunking. Not to say that a couple of post above could not be right, but did you torque all of the bolts to the correct spec??

How many miles since the lift?
Have you re-torqued?
Alignment?

Michael

 

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XJeffro

NAXJA Forum User

Location

Indiana, PA

• Sep 2, 2003

• #5

i just put it on earlier today. had a mechanic do it (time just didnt allow big weekend this week). he said to put some spacers in the AAL. i just wasn't sure if that was the right thing to do.

If i drop the t-case 1/2 inch, how much is involved with that?

 

Backdraft

NAXJA Forum User

Location

TX

• Sep 3, 2003

• #6

For the Tcase, just get a pile of washers (enough to make a half inch thickness on all four corners) to put between the crossmember and the frame where the mounting bolts are. And its not a hard job at all.

Mike