Hey,

My Panhard Bar has been making a annoying sound for months now everytime I go over a bump slowly. I took it off and used the grease gun on the bushings and it helped for about a week or two but then it came back again. It makes a sound like when you step on a wooden floor but its alot louder. I think the bushings are shot, do you think if I bought some Polyurethane Bushings would this help me solve my problem? Thanks for any input.

 

Grease should not be used on OEM Rubber bushings.

Silicone could be used but grease will tend to attack the rubber and make it degrade quicker.

Many people do not understand how a rubber bushing works. There is no rotation in the bushing or the through bolt. The outside of the bushing is clamped by the press fit into the arm and the metal center is clamped to the bracket by the through bolt. The rubber winds up to allow the joint to flex. With no motion in the bushing other than the rubber winding up, lube is not needed or wanted. The OEM rubber isn't really a bushing it is an elastic joint.

Poly is a true bushing and rotation is happening. This is why they squeak and need grease zerks on them.

Your panhard rod is either loose or the rubber bushings are worn out allowing the center to rotate and make the noise you hear.

I would buy some OEM or Moog bushings and have them pressed in.

Or buy an aftermarket panhard rod with rod ends.

There is one other critical thing with rubber bushings. You must tighten them at ride height. If you don't they will shear apart due to winding up past their design limits.

I would not use poly unless I have no choice at all. It will cold flow and the holes will egg shape over time, it also will squeek badly. The main advantage to poly is that it is cheap to make, thats why so much is sold, not that it is a great material.

Strano parts has a sale on Moly panhard rods.

Z28