morphiusrt

iTrader: (7)

I don't like to be "that guy" that asks questions that have been asked a million times but I have searched and still can't find anything.

07 Nismo 45,000miles.

Problem:

Whenever I hit any type of bump my car makes a clunking noise. Even bumps that you can't see like cracks.

Sounds to be coming from the front more on the passenger side. But does almost sound close to the middle of the car. If I had to guess it would be lower.

It started a few days after coming back from a 2,800mile road trip to Zdayz

Spec

ISC Coilovers -1.5" front -1.25" back professionally installed about 4,000 miles ago
Alignment professionally done 4,000 miles ago
Sportline 19x9.5 +22 19x10.5 +22

Video:

As you can hear I was on a bumpy road so the sound was pretty steady. It is a very deep clunk.

http://youtu.be/k0w_Hj9fKS0


Things I have tried with no luck:

Tightening all the bolts to proper torque
Rubber hammer but can't replicate the clunk


Is there anything else anyone can think of to try and fix this?

Deteria

iTrader: (2)

Does it come from the front near the hood or is it lower to the ground?

I had a similar issue when I had springs installed, but it was due to tightening down the middle bolt on the top of the shock. Not sure if it's the same case with yours since you have coilovers.

nismoracingsx

iTrader: (1)

sounds like a loose coilover adjusting ring = /
jack up that corner and check them

also, you had your coilovers and alignment done professionally..why not just take the car back to that shop and have them check it? only 4k miles and already clunking? sounds like they should fix it..

morphiusrt

iTrader: (7)

It sounds very low almost under your feet. I thought maybe the sways but they were tight.


They seemed tight but I didn't check with the tool.

It's like 1 1/2hrs away from me. So I'm trying to figure out and easy way to fix it with out traveling that far. But that will be my next step if I can't find anything on my own.

Kcee91

iTrader: (2)

Did you check the control arm bushings?

morphiusrt

iTrader: (7)

I looked at them but I don't know what to look for in terms of if they are bad or not. They didn't looked ripped or anything. Should there be something in particular I would be looking for?

350zbehold

Lol check for ur front strut.. or the three bolt of the top hat that seem loose.. if not.. chrck ur radius arm bolts... if not that.. check for the preload spring perch ring might be loose..... i have a clank noise/clunk on my 06 z touring on passenger side front also but it not like ur and i still couldnt find what the problem was

morphiusrt

iTrader: (7)

I did check the top bolts.

morphiusrt

iTrader: (7)

I figured it out!!!

The bolt on the top hat was a little loose. Tightened it and she solid as a rock again.

Thank you for all your help.

350zbehold

glad to help....

vagel72

iTrader: (1)

Here is another possible fix for people who this was unsuccessful.

https://my350z.com/forum/maintenance...e-for-4-a.html

Ive been having the same issue after installing SPL front a-arms, compression rod bushings, and front lower control arms bushings all from SPL. Also, I installed SPL rear camber arms, eccentric lockout for camber arms, and SPC toe bolt washer extender.

When I took down the front cross bar (or brace) one of the bolts were stripped so I just ordered some bolts to replace the bad one maybe the bar is rattling against the steel it sits against. Or possibly the SPL compression rod bushings are too big and it is leaving a gap at the cross bar causing the rattle.

I am testing new bolt first, then I am going to try the link above if this doesn't work.