Originally Posted by geeitup

Do you have any contact info at Tokico - I'm in the same boat? How have they treated you?

Originally Posted by MIA_G35

I have the same sound coming from my rear wheels. Started just after I had D-Specs installed. I was planning to replace my HNR springs with the stock springs to see if that helped. Any other suggestions?

Originally Posted by geeitup

Wow, I have the same thing from the left front only. Kind of a hollow knock going over small, sharp bumps (like pavement gaps) only at slower speeds (less than 35). I did my install myself so was paranoid I screwed up a ball joint or something. I took the whole thing apart and re-installed. I did not take the spring off the shock though, but everything appeared normal. No improvement. I had my car in recently for brakes and had the dealer check everything. They couldn't find anything, and thought it might even be my windshield replacement - clueless dealer strikes again. My rattle came right after my spring/shock install, so there is no way its the endlink. I did later install a Stillen sway with no change to the knock. Which D-Spec are you guys running? I am using the sedan shock with 03 Z spings, so I'm thinking that's the issue. During the install, I was concerned about how much to tighten the top shock nut, which compresses the spring. I tightened the nut as far as it would go, thinking it would be necessary since the spring is shorter than the sedan spring the shock was designed for. I wonder if washers are necessary to further compress the spring even more? I wouldn't think so though since the spring seemed sufficiently tight. Or maybe back off the nut, to uncompress the spring a bit? I may do some trial an error at some point, but I just got an allignment and don't want to screw it up, and I'm moving on to some bigger mods, so the knock may have to wait. I was going to contact Tokico as well. Seems odd we all have it in the front left, maybe just a case of that's where we hear it since that's where we sit. I'll pm Gsedan35, maybe he has some idea. Between all of us, maybe we can figure it out, because it has taken some of the joy out of this mod.

Originally Posted by spdzone

I too am getting this rattle sound from the passenger rear. So far I only went as far as taking off the wheel to inspect the noise. This weekend I plan to uninstall the spring and shock and then re-install. I'm hoping its something I may not have torqued properly.

Originally Posted by ryanwiggum

could be the bushing on the lower shock mount:

http://www.my350z.com/forum/showthread.php?t=211475

I'll check mine when i get a chance

Originally Posted by ryanwiggum

I checked the lower shock mount on the driver's side rear today and it appeared to be fine. I also removed and took apart the shock and reinstalled it and re-torqued the bottom bolt with a jack underneath as spdzone did. I still get clunking noises.

Also, I noticed that my driver's side rear sits lower than the passenger side. Could the spring be causing the noise? My buddy thinks that might be it.