Noisy LCA

[crazyone64]

I had my 03 mach1 looked at by a mechanic and I mentioned a loud clunking noise over cracks/bumps, coming from the rear/center. He mentioned he had my LCA on his Mustang and the LCAs are the culprit. I've replaced most if not all suspension parts and bushings.
It's pretty annoying. They're about 4-5 years old, don't think they've seen more than 5k miles.

I have a pair of 79-04 Mustang Pro Street Chrome Moly Lower Control Arms

Why would this be happening? and how to resolve?

 

[Noobz347]

I would consider the lowers in your link to be some of the worst for a street driven Mustang.

Urethan bushings at both ends in a 4-link, are a really good way to promote suspension bind.

I would look for a better set of lowers; Something with Delrin or a hem joint at one end. Others may have other suggestions but I'm thinking Kenny Brown or Maximum Motorsports.

Are you still using the stock uppers? How old are those?

 

[manicmechanic007]

I got one too about poly bushings
Speedway sold me some garbage springs with crappy poly bushings for a nice straight axle setup I bought
The rest of the kit was okay, great even
The cheesy poly spring bushings looked like they would last about a week on a golf cart
I had to modify (build) some Jeep Rubicon springs for my build (straight axle setup on a 56 Ford 2 door post)
I see those lower arms all over on Camaros and cringe EVERY time

 

[manicmechanic007]

Those bushings work fine on a jacked up Toyota sway bar mount
High pressure or stress even with a sleeve, those bushings squawk out quick