Rapid-fire squeaking/creaking from rear suspension

[f00stx]

I've got MCA Blues on my V36 Skyline, and while I've managed to sort out issues with scrubbing/bottoming out by raising it a smidge and increasing the damping hardness, the rear end still sounds *super* noisy when driving on anything other than the flattest surface imaginable. It sounds like a small party of flamingos are just chatting away in the back, which makes me think there are several link points in the suspension contributing to the noise.

Am I hearing dried out/worn bushings? None of it sounds like metal-on-metal, it sounds more like hard rubber squeaking on metal. It's been suggested that a bit of silicon spray on each bushing might quiet them down, but I'm not sure what material the current bushings are made of (probably factory, I imagine) and whether silicon spray will degrade that material.

[GTSBoy]

Silicone spray won't hurt anything. And if it does, that's an opportunity to put some solid steel spherical bushings in, so you can really learn what suspension noise sounds like,

If you're going to try it, just spray one bush at a time, so you can work out which one is actually noisy.

My best guess is that if the noise started only since putting the coilovers in, then it is just noise being transmitted up through the top mounts of the struts, and not necessarily "new" noise from bushes. But it's almost impossible to know.

[f00stx]

Thanks, I'll give that a go.

Hard pass on the steel bushings though 😄

[Murray_Calavera]

@f00stx Do you have any polyurethane bushes? They can be pretty noisy if they dry out.