vibration is either the 4wd kicking in, the ABS, alignment, or wraped rotors/bad brakes.
hahaha does that help?
James and I did a bit more work on his 97 recently, we performed a torsion twist and warrior shackles. This turned into a MUCH bigger job then we expected:
First we measured the truck on level ground with the tires pressure even and a half tank of gas:
AS you can see the front fenders were within 1/2" of each other at 140K miles
The torsion bars have sagged (apparent from alignment)
We set the tape on the front fenders right at 34" (before)
We set the tape on the rear fenders right at 33" (before)
We placed tape on each of the 4 wheel wells at a predetermined distance so we could have an accurate before and after measurement, and a way to level out the truck exact with the torsion twist.
We got started by jacking up the rear of the truck and supporting it by the frame as pictured. I also added another jack stand at his hitch just for safety (not pictured):
Then remove the rear wheels, droop the rear axle fully and remove the shackle bolts. The drivers side was a cake walk, took all of 15 minutes to remove the factory bolts and shackle and install the new warrior shackle. A small pry bar is used to line up the leaf spring with the lower shackle bolt
Shackles:
Then we moved onto the pass side (Not fun):
trying to remove the bolt:
Even with a 4' breaker bar they would not budge
My best guess is that the exhaust on this side of the truck has effected the shackle/leaf bushings and we were unable to get them to move. We tried heat, we tried everything they would not move.
We ended up cutting the bolts with a grinder and sawzall
We ended up using my ball joint press to push the factory bushing with bolt pieces out of the leaf spring and out of the frame.
We then contacted Ford and ordered the new bushings. FYI Ford does not list a bushing for the frame insertm instead they say you need a new frame (WAJ)
Getting the metal bushing sleve out of the leaf spring is next to impossible UNLESS you have an air chissel:
My teeth rattle just looking at this:
pressing in the new bushing:
Finally all said and done in the rear we get:
A full 2" of lift, this is after driving the truck to let it settle
Then we move to the front for a simple torsion twist using new 100mm long bolts as recommended on this forum. IMO 100mm is WAY too long, I cut about a full inch off these suckers:
(bolt was cut more after this picture, they are about 1/2" longer then the factory bolts when all is said and done, they do not hang down below the t bar protector bracket, and there is still plenty of adjustment left
Kevlar torsion bar "Wear" pad......nice work Ford!
Updating the 95-97 trucks to the 98 style with the replaceable pad would require cutting into the frame and mods to the torsion bar adjuster bracket...no thanks! New adjusters are $40-$50 each...
We didnt get any pictures of the t bar twist because there are plenty on this forum already
The front of the truck was lifted a full 1-1/2" on one side and approx 1-1/4" on the other to level the truck out at 35-1/4":