986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Thunking / knocking noise coming from rear when going over bumps

piper6909 · 05-20-2019, 06:03 PM

Has anyone tried these? They're $378 for 2.

https://www.youtube.com/watch?time_continue=11&v=O57sPjCW7YQ

I'm not sold on them because it looks like the motion is severely restricted.

Bushings like that should lay horizontal for up/down motion and vertical for left/right motion. These are mounted vertical on an arm that travels up and down. I'm thinking early failure.

There's a reason the Porsche engineers spec'd ball bushings, right?

Any thoughts?

05-20-2019, 06:03 PM	#13
piper6909 Registered User Join Date: Jan 2019 Location: PA Posts: 1,726	Has anyone tried these? They're $378 for 2. https://www.youtube.com/watch?time_continue=11&v=O57sPjCW7YQ I'm not sold on them because it looks like the motion is severely restricted. Bushings like that should lay horizontal for up/down motion and vertical for left/right motion. These are mounted vertical on an arm that travels up and down. I'm thinking early failure. There's a reason the Porsche engineers spec'd ball bushings, right? Any thoughts?