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Control arms. Need replacing? (pics)

7401 Views 25 Replies 10 Participants Last post by  ThatOneGuy93
Hi all,
so Janet (yes I call my car Janet now) has developed some knocking noise in the front end. It's coming from both sides at different times, sometimes the same time depending on the terrain. Big bumps and speed bumps don't affect it as much going up, but coming down on the speed bumps I hear it more, and on shallow pot holes. I think it's the control arm bushings, but not 100% certain... so I posted some pics too to see if anyone can tell me if these bushings are in fact garbage. They don't look good. Are they toast?
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I wish someone made solid poly bushings instead of the engineered holey ones.
Fill the holes in the bushings with Black silicone RTV. Just be sure to do it when the car is sitting on them weighted. Let it cure before you drive.
I wont be quite a rigid as poly bu it will be a reasonable street worthy compromise.
I wish someone made solid poly bushings instead of the engineered holey ones.
I'm definitely interested in doing that. I saw the How-To thread a while back and it looks pretty easy... messy, but not too difficult.
I'm going to have a mechanic look at my car before I do anything. If they say the bushings are fine and have plenty of life left on them maybe I'll silicone or poly them up. Otherwise, just might order new control arms and mod them off the car before I install them.
I would recommend against this. The spaces and tolerances are designed with everything weighted. If at all possible I would inject the silicone while the bushing are installed and it is standing on all four paws.

EDIT: This also applied to the final torquing of the suspension bushing parts. Tighten everything with the vehicle suspension siting at normal operating height. @RandallCunninghamJrIII

Attach a hose to your silicone tube if it is hard to reach and put it on wheel stands (lift?) to gain more access.
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