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Suspension / Brakes / Chassis All suspension, brakes and chassis discussions.

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Old 04-22-2009, 02:37 PM   #251
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Wow, so many posts about such a small thing.

For the record, my GT500 has similar, if not the same, 4-piston Brembo brakes as the Camaro and I have no "weights" on my calipers. I've also had no vibration or squeal at any point during the 23K miles I've driven the car.

I sure hope the answer is a good one. The last thing GM needs is a bunch of bad press about the Camaro for whatever reason.
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Old 04-22-2009, 02:41 PM   #252
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Sorry to keep removing posts, but this is a technical forum, so please keep the discussions technical in nature so members can easily check up on this thread for answers. I understand and share in the frustration of not yet having a definitive answer on this, but let's please keep the color commentary out of here. Thanks.
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Old 04-22-2009, 03:03 PM   #253
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It makes since that the CTF cars would not have them... the weights are likely a fix to noise reported by the CTF drivers.

btw, I had our noise and vibration lab look at the pictures and they agree that it looks like the weights are meant to change the resonant frequency of the calipers.

but they could think of about 20 better ways to do fix the brake noise.
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Old 04-22-2009, 03:11 PM   #254
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The resonance sounds feasible to me.

Has anyone ever turned a rotor on a brake lathe? Common practice is to strap a rubber belt laden with lead weights to the rotor to prevent "chatter" which is actually a rough cut from the resonance.

Personally, I am just as interested in what GM has planned for a corrective action (if not more) than the reason for why they are there.
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Old 04-22-2009, 03:34 PM   #255
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Originally Posted by Tran View Post
Sorry to keep removing posts, but this is a technical forum, so please keep the discussions technical in nature so members can easily check up on this thread for answers. I understand and share in the frustration of not yet having a definitive answer on this, but let's please keep the color commentary out of here. Thanks.


Tran scares me.





Has anyone considered the possibility that this is just a mistake and they can be removed with no problem? I would just take them off and see what happens. Really, what's the worst that could happen? They can be put back on.
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Old 04-22-2009, 03:41 PM   #256
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Well, here I go again...second SS (Inferno Orange) delivered to LaRiche Chevrolet in Plymouth and yes they are on it as well. Didn't writhe the vin down but it was in the 3000's. Sorry I haven't gotten an answer yet, but I have faith that it will be reasonable.
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Old 04-22-2009, 04:19 PM   #257
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Seems to be isolated to the SS - V8 models with the 4-piston Brembos. The photos posted of the CTF calipers are from the single piston Brembo on the V6 models. See what happens when you "have" to have one bigger than the next guy....
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Old 04-22-2009, 04:23 PM   #258
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Originally Posted by SWHCPA View Post
Seems to be isolated to the SS - V8 models with the 4-piston Brembos. The photos posted of the CTF calipers are from the single piston Brembo on the V6 models. See what happens when you "have" to have one bigger than the next guy....


They both stop in the same amount of distance...it's just about how often you want to do it.
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Old 04-22-2009, 04:33 PM   #259
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Anybody know what the deal is on the stack of wheel weights on both front calipers on the 2010 with brembo's? I will try to attach a picture.
Did you try maybe taking it off, maybe its just something from the factory (kinda like when they put plastic on the seats and steering wheel)
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Old 04-22-2009, 04:58 PM   #260
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Just saw, today, the first delivered Camaro at Lou Fusz in St. Peters, right out side of St. Louis, and yes it did have the same weights in the same spots; it was an RJT SS/RS.
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Old 04-22-2009, 05:04 PM   #261
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Wow, so many posts about such a small thing.

For the record, my GT500 has similar, if not the same, 4-piston Brembo brakes as the Camaro and I have no "weights" on my calipers. I've also had no vibration or squeal at any point during the 23K miles I've driven the car.

I sure hope the answer is a good one. The last thing GM needs is a bunch of bad press about the Camaro for whatever reason.

Totally different bodies and hardware. What might work on one might not work on the other without modification or add-ons.
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Old 04-22-2009, 05:05 PM   #262
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A newbie here, but I had to chime in. These really appear to be dampeners attached to the calipers to silence a squeal. I am truly amazed at the negative comments here, and especially over at Jalopnik on this.

The new Camaro is literally in its infancy and there are going to be issues that pop up. At this point, GM probably has thousands of calipers which can either be scrapped or salvaged. These dampeners are surely a work-around which will allow GM to save many thousands of dollars in scrap. You can bet a true fix is already in the works, but it can literally take months before a supplier can incorporate manufacturing changes.

No one complains about wheel weights, which correct issues with tire balance. No one complains about sound deadening attached to interior of the trunk which dampen noise. No one complains about rubber bumpers in the glove box that silence rattles.

Why is practically invisible harmonic dampener on a brake caliper such a big deal?
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Old 04-22-2009, 05:08 PM   #263
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A newbie here, but I had to chime in. These really appear to be dampeners attached to the calipers to silence a squeal. I am truly amazed at the negative comments here, and especially over at Jalopnik on this.

The new Camaro is literally in its infancy and there are going to be issues that pop up. At this point, GM probably has thousands of calipers which can either be scrapped or salvaged. These dampeners are surely a work-around which will allow GM to save many thousands of dollars in scrap. You can bet a true fix is already in the works, but it can literally take months before a supplier can incorporate manufacturing changes.

No one complains about wheel weights, which correct issues with tire balance. No one complains about sound deadening attached to interior of the trunk which dampen noise. No one complains about rubber bumpers in the glove box that silence rattles.

Why is practically invisible harmonic dampener on a brake caliper such a big deal?

probably because no other car has weights on their brakes calipers and all the other things you mentioned are normal.

Last edited by fdjizm; 04-22-2009 at 05:20 PM.
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Old 04-22-2009, 05:23 PM   #264
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probably because no other car in the world ever had weights on their brakes calipers and all the other things you mentioned are normal.
Well... we accept the other things as normal because their the easiest solution to solve the respective problems. All of the things I mentioned could be engineered out, but it's obviously not practical for mass production.

I'm not sure that we can say no other car in the world ever had something like this. Who knows, maybe no one ever noticed.

If it is a fix for a NVH problem, GM sould be applauded for at least recognizing the problem, and taking steps to correct it. My 2008 Impala squeals like a mother, and I would be happy to have a solution for that.
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Old 04-22-2009, 05:31 PM   #265
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Well... we accept the other things as normal because their the easiest solution to solve the respective problems. All of the things I mentioned could be engineered out, but it's obviously not practical for mass production.

I'm not sure that we can say no other car in the world ever had something like this. Who knows, maybe no one ever noticed.

If it is a fix for a NVH problem, GM sould be applauded for at least recognizing the problem, and taking steps to correct it. My 2008 Impala squeals like a mother, and I would be happy to have a solution for that.
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Old 04-22-2009, 06:00 PM   #266
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Gentlemen As far as the brake weights go I heard from a fellow in the GM plant, the brakes were squeeling and by weighting the calipers the squeel went away Brembo has, since then sent a new batch of calipers to correct this problem Hope this helps
Why does everyone keep dismissing this post.

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My 2008 Impala squeals like a mother, and I would be happy to have a solution for that.
Well if nothing else, you have a solution for it now. Lead wheel balance weights.
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Old 04-22-2009, 06:06 PM   #267
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Uh-oh.

http://www.thetruthaboutcars.com/wha...amaro-edition/
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Old 04-22-2009, 06:25 PM   #268
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uh-oh what. Just a picture of whatever-they-are and a bunch of people wondering what they are.
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Old 04-22-2009, 06:27 PM   #269
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Old 04-22-2009, 06:28 PM   #270
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Why does everyone keep dismissing this post.

Well if nothing else, you have a solution for it now. Lead wheel balance weights.
I'd rather trade it in on a new SS with Brembo brakes, and get the weights for free.
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Old 04-22-2009, 06:42 PM   #271
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sorry if this is a repost but the dealership i ordered mine through has a red ss/rs up there right now and i remembered to look for those on the brakes. you can't even tell they are there. you literally have to look into the wheel and on top of the caliper to see them. also i asked and no one knew what they were for and being a performance caliper im sure that they have a reason for being there
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Old 04-22-2009, 06:44 PM   #272
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The issue is not that they look out of place... which they do,


The issue is... how are they going to hold up to the high performace / high temperature conditions that Brembo's were built to endure.

They are going to come off at some point... or melt.

Seems like there should be a cheap and easy fix out there somewhere that wont be so ghetto.
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Old 04-22-2009, 08:09 PM   #273
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After checking out the 2SS in Hanford, CA. The front calipers had the weights but the rear calipers didn't....see pics below (first one is rear and second is front).
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Old 04-22-2009, 08:33 PM   #274
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The issue is not that they look out of place... which they do,


The issue is... how are they going to hold up to the high performace / high temperature conditions that Brembo's were built to endure.

They are going to come off at some point... or melt.

Seems like there should be a cheap and easy fix out there somewhere that wont be so ghetto.
My brembos on my stock 350z track squealed like crazy at low speeds when hot... Less wear equals harder materials more squeal... More piston stopping power + harder material equals more vibration/friction... Brembos always squealed even on my old f355 they pinged like a mother... Always low speed... I would trade small weights for no squealing anyday and twice tuesday. May be functional but wierd and ugly..... I agree this should be a recall or credit at least
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Old 04-22-2009, 08:44 PM   #275
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My brembos on my stock 350z track squealed like crazy at low speeds when hot... Less wear equals harder materials more squeal... More piston stopping power + harder material equals more vibration/friction... Brembos always squealed even on my old f355 they pinged like a mother... Always low speed... I would trade small weights for no squealing anyday and twice tuesday. May be functional but wierd and ugly..... I agree this should be a recall or credit at least
Brembos on my Boxster S never squealed!
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