Polyurethane bushings making noise

[The_Full]

I recently had upper and lower polyurethane control arm bushings from PST installed on my ‘79 Monte Carlo. Now that they are installed they creak as I get in the car and drive. They were greased but still make noise. Has anyone else had this problem? If so what did you do?

 

[Supercharged111]

Do you have zerks? Have you tried just slamming them full of grease again? I'm wondering if you didn't miss a spot or maybe it squeezed out.

 

[bruisedbanana79]

Also did you torque the arms when the car was back on the ground under its full weight or when it was still on jack stands?

 

[Supercharged111]

Also did you torque the arms when the car was back on the ground under its full weight or when it was still on jack stands?

That's irrelevant for poly, which is why it's prone to squeaking.

 

[Clone TIE Pilot]

Poly bushings squeak because they bind in multi axis rotation applications like those found in G body suspensions. Rubber bushing deflection allows for the required multi axis rotation. Rubber bushings pretty much behave like a torsion spring except the spring rate is supper low. Poly acts similar to a metal bushing that only allows for a single axis of rotation.

Rubber

vs polyurethane

 

[abbey castro]

I had poly on all my suspension. Got tired of the squeaks! It was a task to tear all suspension out, I only have them in the lower rear control arms at the frame. Everywhere else there are MOOG replacement rubber.

 

[79 GP 4 speed]

I have the pst bushings in the a-arms on my car and have no squeaks

 

[Tony1968]

Poly can squeak. You need a louder exhaust and/or sound system. Or wait until you get older and lose hearing. Or use Delrin bushings

 

[SS_Malibu]

I redid the complete front end on my Malibu last year and was going back and forth with the whole Poly vs. Rubber bushings. Since I'm not corner carving or drag racing, and its just something to just enjoy, I went with rubber because I didn't want to hear squeaking. I figure the stock ones lasted a little over 100,000 miles the new ones would too. This car will never see another 100,000 miles as long as I own it so it'll be someone else's problem when I kick the bucket.

 

[pagrunt]

Did you use the Energy Suspension lube or simular on them before installing the contol arms? They suggest coating the surfaces that contact metal to reduce the noises.