Clunking Coilovers

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goob_os101
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Clunking Coilovers

Post by goob_os101 »

coilovers installed, but not without probs. I am getting a clunking in the front passengers and both rears. Sounds like something is loose. I actually broke one of the three top hat bolts on the drivers side :banghead:. (can it be replaced/how).
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complacent
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Re: Clunking Coilovers

Post by complacent »

There are a few problems here, fortunately most are relatively easy to fix.

Regarding the clunking - it is usually due to a bolt not being tightened properly (either from perch to top-hat, or hub to base), or from the spring not being seated properly between the top and bottom perches. Take the weight off of a corner and take a look.

There's also a chance that the height adjustment collars are not locked down properly. Again, take the weight off and get in their with your spanner wrench to check the torque on the adjustment rings.

There's yet another chance that these coil-overs clunk, period. When offering performance gains in suspension, there are few products that do not bring compromises (increased NVH, "clunking", rattling, etc) of some sort.

NOTE: This clunking may in fact be "normal" with this product. Have you called the manufacturer to ask if increased noise is expected?

As far as the bolt on the top hat (one of the three that hold the top hat to the top of the fender tower?) It's not easy to replace. And it's a two-fold question.

a) Do you have camber plates installed? If so, you'll probably have to return it to the product manufacturer for repair/replacement.

b) Are you utilizing the stock (or even the Group N) Subaru top hats? If so, go buy a replacement top hat. You can often find take offs at places like NASIOC for a song.

Either way, you're going to have to remove the strut/spring assembly at that corner, disassemble and replace the top hat/camber plate, reverse and reinstall. Unfortunately, unless you've got a good selection of metric studs and the proper press to remove and reinstall them, you're going to be replacing the top hat/camber plate.

Those three bolts are meant to be torqued to somewhere around 14 ft-lbs. Suffice it to say - that's reeeely gentle.

Hope the noise demons are easily exercised with your car. :)
colin

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goob_os101
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Re: Clunking Coilovers

Post by goob_os101 »

a) Do you have camber plates installed? NO

b) Are you utilizing the stock (or even the Group N) Subaru top hats? Running stock

I am going to have them re-torqued. I think that may be the issue ( I hope) :roll:
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drwrx
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Re: Clunking Coilovers

Post by drwrx »

You have beat me to it.
All he hath said is Gospel.
The top hat should not be to hard to replace.
Look here:
http://forums.nasioc.com/forums/showthr ... ?t=1672534
He is selling top hats, just can't tell if they are fronts or rears.
goob_os101
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Re: Clunking Coilovers

Post by goob_os101 »

Coilovers have been great so far, but now the drivers rear is squeaking when I brake and take off. I can replicate the squeaks by jumping on rear drivers side. Time to re-torque again... :headsmack:
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complacent
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Re: Clunking Coilovers

Post by complacent »

goob_os101 wrote:Coilovers have been great so far, but now the drivers rear is squeaking when I brake and take off. I can replicate the squeaks by jumping on rear drivers side. Time to re-torque again... :headsmack:
This is why I don't do coilovers on a daily. You simply have to be willing to expect an increase in NVH, period.

Unless of course you spend $Texas on a serious set.

Good luck keeping the noises at bay! May they all die in a muffled act of violence 8)
colin

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goob_os101
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Re: Clunking Coilovers

Post by goob_os101 »

here is a diagram of the bushing I need to install:
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zaxrex
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Re: Clunking Coilovers

Post by zaxrex »

complacent wrote:This is why I don't do coilovers on a daily. You simply have to be willing to expect an increase in NVH, period.
I'm going to have to disagree with you on that. My original 5/5 KG/mm and valving from the Tein Flex setup was perfect. A little stiffer than stock on the soft setting, but trackable on the stiff one. No extra noise and better 'feedback' from the road.
Patience is the ability to idle your motor when you feel like stripping your gears
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Re: Clunking Coilovers

Post by Sabre »

zaxrex wrote:
complacent wrote:This is why I don't do coilovers on a daily. You simply have to be willing to expect an increase in NVH, period.
I'm going to have to disagree with you on that. My original 5/5 KG/mm and valving from the Tein Flex setup was perfect. A little stiffer than stock on the soft setting, but trackable on the stiff one. No extra noise and better 'feedback' from the road.
I don't think that NVH is increased with coilovers, but I DO think that it is increased from camber plates which most people put on at the same time.
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Mr Kleen
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Re: Clunking Coilovers

Post by Mr Kleen »

Zak, you're the exception to every rule. :rolllaugh:
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zaxrex
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Re: Clunking Coilovers

Post by zaxrex »

I know no rules.
Probably why I am always in trouble.
Patience is the ability to idle your motor when you feel like stripping your gears
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