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Old 12-12-2011, 01:10 AM   #1
Scotty Dosent Know
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Default Need Help, ST/KW coilover noise

A while back I installed a set of ST coilovers (basically KW V1) with stock top hats on my wife's 06 WRX wagon. Car rode nice but I drove it one day and noticed a bit of noise when going over bumps. Nothing terribly loud but there and worse when the car was cold for some reason.

We raised the car up to drive it across the country and in raising the car the noises the coilovers make are much louder.....almost like creeky old springs. Like the sound a bed makes when you are....well you know.


Are the helper springs supposed to be fully compressed when the car is on the ground? I looked through the wheel well trying to figure out the damn noises the car is making and noticed they are.


The coilovers really don't have very many miles on them 8K maybe? I have checked to make sure the lower 2 bolts are tight and the top 3 on all 4 corners. I even had the front 2 off the car and checked the large nuts that hold the tophats on.


Could I be missing hardware between the coilover and top hat that is causing this noise? It is driving me NUTS!! The coilovers have lower miles on them and I know they are not blown, no leaking oil and no "clunk". its more of a squeaky noise and its at all 4 corners.


Please help
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Old 12-12-2011, 02:18 PM   #2
Feal Suspension
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The helper is supposed to collapse under a load, so that is fine.

Sounds like the main spring may be rubbing the body.

The cap securing the cartridge sometimes comes loose on KWs and STs causing the cartridge and shock shaft to shift of center causing things to rub and make noise (V1 and ST cartridges are sealed and non rebuildable).

Hopefully your problem is simpler than that. But this is what we encounter on these coilovers.
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Old 12-12-2011, 05:59 PM   #3
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Thank you for the help.

Im assuming by "rubbing the body" you are talking about the body of the shock. I went out to take a look tonight and it is possible that may be the case. The rear shocks do not appear to be "centered" within the main spring.

I also noticed what appears to be oil from the drivers side rear coilover so im guessing one is leaking now. Yippie.

I guess I need to take these things off and possibly send them in?? What do you do if the cap coming loose on the cartridge is what has happened?



Honestly I just want to throw them away im so frustrated. I need to switch back to stock suspension which equals an $alignment$. + $hipping to send them in and get them back. + another alignment if I decide to even use them $again$ I looked up my receipt and bought them in April 2011.....installed in May.....then my wife drove to work and back on them for 8K miles
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Old 12-12-2011, 07:01 PM   #4
Feal Suspension
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If you are the original owner, they should be covered under warranty. Try contacting KW for this issue.

The bummer about ST's and KW V1s is that the cartridge is not rebuildable. So suspension shops like us cannot rebuild, revalve, or service these for you. No one announces this helpful fact about these coilovers.

V2's and V3's are rebuildable.
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Old 12-12-2011, 11:32 PM   #5
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When does this happen? Is it mostly going over bumps? Slow speed, fast speed. Does this happen while turning the wheel fully at low speed?

Also, is it a springy noise like sproing?
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Old 12-13-2011, 09:40 AM   #6
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Happens slow speed and fast speed. Honestly the time when I notice it the most is backing the car out of my driveway if it has sat over night. Car sounds like an old wooden ship creaking and groaning, its embarrassing. No weird noises when turning the wheel just when the suspension goes over a bump.
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Old 12-28-2011, 04:20 AM   #7
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I think may have the same problem when I drive when its usually cold and at certain times I have a noise kind of clunking sound and you can kind of feel it touching something. Usually like what you said when I back my car out. Kind of curious what the issue here is as well...
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Old 12-28-2011, 04:50 AM   #8
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can you post up pics of the off center rear you are talking about? as well as the leaky strut. Would like to see what's going on.
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Old 12-28-2011, 02:10 PM   #9
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my v1's are loud, mostly at slow speeds, i have no real signs of problems, but they arent the quietest. still better then my bc's
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Old 12-28-2011, 06:00 PM   #10
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I've seen a few other threads on other forums for other makes describing similar issues. Hmm, looks like its a fairly widespread issue with the V1's. What a drag.
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Old 12-28-2011, 06:54 PM   #11
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ive considered ordering those torrelson bearing to see if that makes a difference
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Old 12-28-2011, 06:58 PM   #12
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torrington bearings.

those will help if you are getting a "sproing!" kinda sound as the spring unwinds (like in low speed turning). It won't help if its a knocking noise.
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Old 12-29-2011, 09:49 PM   #13
go0sebumpz
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^ do you know a solution for a knocking type noise? I get a knocking noise usually at cold when reversing slow... it's really noticeable as if something in the back is getting hit. I'm debating if I had installed my rears wrong with the tophats, can it be because I did not use group n rear tops?
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Old 12-29-2011, 09:50 PM   #14
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I will take some pictures when I take them off of the car hopefully in the next week or so. Been busy with holidays and my work car had the water pump go out so I have been driving the WRX for work untill I can do timing belt/water pump.


I dont think its the spring unwinding. Basically if the car is parked and you are standing in the door jamb and jump up and down you can here the noise also. Sounds like an old mattress or bed. I have noticed the problem getting worse over the last 1K miles......or maybe the change in weather. I am honestly embarrassed to drive the car through a bumpy parking lot in front of people. Its that bad.

Sucks because my wife was all excited to mod a car and spending $1K on something like this has turned her off of doing anything else to the car. In the 16 years I have been working on cars this is my least favorite purchase. I honestly would like my money back but I know that will not happen.
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Old 12-30-2011, 01:00 PM   #15
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Hmm, seems like a common issue with KW V1 struts on various platforms. So its most likely a common internal construction issue for the Variant 1. I would contact KW USA and see what the have to say as it seems to be a common problem.
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Old 05-26-2012, 04:43 PM   #16
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I also get a creaking sound coming from my front right KW. I've only had them on for about 200 miles. It usually occurs when backing out of the driveway, and seems to stop after a minute or two of drive.

thought?
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Old 05-27-2012, 12:11 PM   #17
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update. My coilovers also make a deep sounding squeak sound when i pull up on the fenders with a little effort. The only one that doesn't do it on is the front left.

Took the car out of the garage. Could hear the noise. Backed out of the driveway and went for a spin. After backing out of the driveway i could no longer here the noise.

I went for about a 7 mile ride. My back roads are pretty bumpy until i get on a main route. Takes about 2 miles. I did not hear the noise once. On my way back i heard a slight clunk once, but nothing major.

Back in the garage parked. I pulled up on all the fenders and couldn't get the noise. Just very lightly on the front right.

Any ideas?
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Old 05-31-2012, 04:19 PM   #18
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I contacted KW a couple of times. Their service staff said that it can be normal for the coilovers to make a clunking rubbing sound first thing after the car has been sitting for a while. If it does continue and i am not happy with them, I can send them in to get checked.

From what i have read on Nasioc the sweet spot for the coilovers is
14" front and 13.5" rear. The tech i talk to said that the normal range is

Front 14.2 - 13.6

Rear 13.8 - 12.8

I may try lowering them some to see what happens.
Before i adjusted them to this height, i don't remember having the noise, but only drove them a few miles.

Will lowering affect alignment specs much? toe in? Camber?

Thanks
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Old 06-04-2012, 08:49 AM   #19
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Update: Knock on wood hopefully this will be the final one.

I put the car up on jack stands on Saturday.On the front coilovers I cleaned all the threads and dropped the adjusters all the way to the bottom. I made sure all top nuts were torqued and they were. I re -adjusted the springs so i had 23/24 threads showing below the adjuster. Before I was at 30/31. Dropped the car from 14" to 13.75" ish with this 6 turn difference. Got the car back on the ground and let it sit for a day and a half. Pulled the car out of the garage and down the driveway twice this morning. And No Clunks!!! Not a sound! Woohoo!!!

Something must have been binding or since the ride height adjusts the preload, the 14" setting may have caused too much pre load?

I don't know, but i love my car again!!
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Old 05-06-2013, 10:40 AM   #20
suijy
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Angry noise from KW V1

I have install a new KW V1 using stock hat on MY05 Sti. When parked for a while, the rear is very noise when I move off. What exactly happen? KW changed 2 rear shock but it still the same. Please help.
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Old 05-06-2013, 07:15 PM   #21
Scotty Dosent Know
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Pretty sure one of the rears on mine are blown btw. Dealing with ST right now about sending them in and getting them rebuilt. Hopefully it goes well. Due to work took me a long time to be able to swap every thing out and deal with it.

Last edited by Scotty Dosent Know; 07-01-2013 at 01:13 AM.
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Old 07-13-2013, 12:41 PM   #22
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I've had the V1s on for about 1k miles now. The rear end creaks like crazy, sounds like a wooden ship. The fronts are dead silent.

The creaking is constant once the car starts moving, weather I'm going slow or fast, smooth or rough surfaces. The ride's not bad at all, but man, the creaking is crazy.
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Old 07-13-2013, 03:35 PM   #23
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my front drivers side makes a click/crunch sound a little like a worn CV when i go over potholes. everything else silent with the exception of a little binding when the wheels turn at low speed.
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Old 07-20-2013, 11:02 AM   #24
chargalar
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I'm in the same situation...just installed brand new KW V1s with brand new Group N top hats 3 weeks ago in my 07 wagon.

When I first took the car for a test drive everything was silent. As time went on I noticed more and more creaking noises mostly from the rear whenever the car was cold. Now I hear creaking and knocking from all four corners no matter what speed or how long the car has been driving...and even more noticable creaking/shuttering noise when I turn the wheels at low speeds after its been sitting for a while...its almost as if something isn't lubricated properly...

Its funny though, it doesnt seem to effect the overall performance of them at all, they still feel great.

Does anyone else have any other ideas? Don't understand how lowering the car a tad more would fix the issue, but Ill check where exactly mine are sitting at right now. I just dont want to change the ride hieght too much and have to get it aligned again.

Last edited by chargalar; 07-22-2013 at 08:26 AM.
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Old 07-23-2013, 08:04 AM   #25
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Update:

I jacked the car up to find no leaks or any visual damage at all... The fronts seem to be making the weird "dry" rubbing noise under rebound while the rears are making the creaking sounds during both compression and rebound.

Im taking a video today after work and I'm going to contact KW USA about it, I will also post it on here as well...
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