Help/Advise needed - Brakes - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Immortan · 04-27-2016, 04:15 PM

I need help from fellow owners...

Driving on rough roads and over bumps, my brakes are rattling in the front. I discovered it was the brakes after applying light pressure to the peddle while driving a problem street and the noise ceased.

My question to you is, do yours rattle, is it normal? I have not had the wheels off this car yet, so I have no idea of the brake makeup. (i.e. anti-rattle clips or how the pads are held in.)

Any guidance would greatly be appreciated.

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D2M · 04-27-2016, 05:35 PM

Not normal. Take it in to have it checked out..

Pads are held in by the 2 small pins at the top and bottom of the caliper pad opening. The pins are held in by the spring clip ( Gold element in center of caliper ) and the bolt in bridge ( big bolt in center ) The spring clip puts slight pressuer on everything to keep it all tight and quiet.

Immortan · 04-27-2016, 06:56 PM

Checked all 4 corners, I am trying to avoid going back to the joyridership.

Both fronts make this sound.

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Stephen12ZL1 · 04-27-2016, 09:27 PM

the pins that are not protruding through the caliper as much may need to be seated a little more. You need to remove the wheel. Be careful, you can chip a carbon ceramic rotor easily if you plop the wheel on the corner of the rotor. Take a small punch/drift and gently tap the pin from the inner flat part to make the pointed end appear as the pics with the pin fully protruding. Also, double check the top retainer and make sure the 13mm bolt is tight. The metal retainer on top holds tension on the pads to prevent chattering and noise so that may not be installed properly. It is a nice system, and I've never had a Brembo unit ever make any noises as you describe.

Stephen12ZL1 · 04-27-2016, 09:30 PM

Also, make sure the main caliper bracket is tight on the back of the hub assembly. Those bolts are much larger and need to be very tight (can't remember the exact torque value).

JTRATX · 04-27-2016, 09:51 PM

Is the pad moving in the video? Not normal BTW. Pull the wheels and inspect.

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Immortan · 04-27-2016, 10:01 PM

The shallow pins are the fronts and are flush on the back side of the caliper.

The retainer on the fronts feels much weaker/spongier than the rears.

So I tried to get the car in the air... I don't even know how to get the jack under to lift it. Looks like I will need race ramps and a lower profile jack.

I am pretty nervous with the chattering from this brake system. It's all very expensive.

I'll keep checking and trying suggestions

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Immortan · 04-27-2016, 10:35 PM

I guess I will schedule with the joyridership tomorrow. It's going to be a long day... time to bust the go-pro out.

I absolutely hate letting the techs drive my car. Can only imagine the feeling when you watch your own car rip past you... oh wait... I know that feeling.

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69L48Z27 · 04-27-2016, 11:28 PM

Quote:

Originally Posted by Immortan

The shallow pins are the fronts and are flush on the back side of the caliper.

The retainer on the fronts feels much weaker/spongier than the rears.

So I tried to get the car in the air... I don't even know how to get the jack under to lift it. Looks like I will need race ramps and a lower profile jack.

I am pretty nervous with the chattering from this brake system. It's all very expensive.

I'll keep checking and trying suggestions

Sent from my iPhone using Tapatalk

Drive the car up on two short 2x4's then jack it up.

Mgizzle · 04-28-2016, 08:42 AM

Quote:

Originally Posted by Immortan

I need help from fellow owners...

Driving on rough roads and over bumps, my brakes are rattling in the front. I discovered it was the brakes after applying light pressure to the peddle while driving a problem street and the noise ceased.

My question to you is, do yours rattle, is it normal? I have not had the wheels off this car yet, so I have no idea of the brake makeup. (i.e. anti-rattle clips or how the pads are held in.)

Any guidance would greatly be appreciated.

Sent from my iPhone using Tapatalk

This is normal, what is happening is that your pads have clearance to the aluminum caliper at the top and bottom of the pad. Reason is that when you are on the track the pads expand so you don't want to sieze them inside the caliper. In addition, you have HUGE brakes and the pads are very heavy. When you drive over rought pavement they shake up and down and hit the caliper guides/abutments. This is why it goes away with a little bit of pressure, you stop the pad from rattling up and down inside caliper. Nothing is wrong and your car will not have any damage, it is just noise called pad rattle. The big spring does help this, if you want to prove it out take that spring off and go for a ride. The caliper rattle becomes SIGNIFICANTLY higher (race cars usually don't have the rattle springs and some guys believe it or not take em off on track days too).

If it really bothers you, you could ask the dealer for some pad copper paste that will be applied to the top and bottom of the pad but if you are tracking I wouldn't put it on.

Every fixed opposed caliper has this rattle, it all depends on how rough a road you are and how stiff our suspension is. Enjoy the Z, nothing is wrong with your hardware!

Here are good pictures of a caliper, your brakes don't have abutment plates, they are machined into the caliper, its where the pad ends slide on. The two pins go through SLOTS in the pad so again, your pad moves up and down and bottoms out on the abutments. In addition, think about applying brakes, the torque moves the pads against the abutment, this is what stops the pad from rotating, the pins hold it in the caliper and help with the spring. When abutments wear or in screw in cases are missed, you can bend those two pins easily.

http://www.stoptech.com/products/big...and-components

D2M · 04-28-2016, 10:36 AM

I would say if one of the springs is off center in the caliper it could be putting more pressure on one pad and less on the other causing one pad to rattle around in the caliper?

Immortan · 04-28-2016, 11:05 AM

Thanks for all the insight! I will pick up two 2x4's and check those plates today, but Mgizzle's post made a lot of sense, so thank you.

The road is really rough. I usually drove with the windows up so I probably never heard it. Thanks all, just wanted to make sure the most expensive part of the car wasn't falling apart.

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cpole82 · 05-02-2016, 11:19 PM

While I agree with your summary Mgizzle, I assure you these are not Stop Tech brakes. The one-and-only BREMBO produce the Z28 calipers and Rotors

04-27-2016, 04:15 PM	#1
Immortan Drives: 2015 Z/28 Black, A/C, Stereo Join Date: Oct 2015 Location: Tucson, AZ Posts: 147	Help/Advise needed - Brakes I need help from fellow owners... Driving on rough roads and over bumps, my brakes are rattling in the front. I discovered it was the brakes after applying light pressure to the peddle while driving a problem street and the noise ceased. My question to you is, do yours rattle, is it normal? I have not had the wheels off this car yet, so I have no idea of the brake makeup. (i.e. anti-rattle clips or how the pads are held in.) Any guidance would greatly be appreciated. Sent from my iPhone using Tapatalk

04-27-2016, 06:56 PM	#3
Immortan Drives: 2015 Z/28 Black, A/C, Stereo Join Date: Oct 2015 Location: Tucson, AZ Posts: 147	Help/Advise needed - Brakes Checked all 4 corners, I am trying to avoid going back to the joyridership. Both fronts make this sound. Sent from my iPhone using Tapatalk

04-27-2016, 09:27 PM	#4
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,824	the pins that are not protruding through the caliper as much may need to be seated a little more. You need to remove the wheel. Be careful, you can chip a carbon ceramic rotor easily if you plop the wheel on the corner of the rotor. Take a small punch/drift and gently tap the pin from the inner flat part to make the pointed end appear as the pics with the pin fully protruding. Also, double check the top retainer and make sure the 13mm bolt is tight. The metal retainer on top holds tension on the pads to prevent chattering and noise so that may not be installed properly. It is a nice system, and I've never had a Brembo unit ever make any noises as you describe. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

04-27-2016, 09:30 PM	#5
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,824	Also, make sure the main caliper bracket is tight on the back of the hub assembly. Those bolts are much larger and need to be very tight (can't remember the exact torque value). __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

04-27-2016, 10:01 PM	#7
Immortan Drives: 2015 Z/28 Black, A/C, Stereo Join Date: Oct 2015 Location: Tucson, AZ Posts: 147	Help/Advise needed - Brakes The shallow pins are the fronts and are flush on the back side of the caliper. The retainer on the fronts feels much weaker/spongier than the rears. So I tried to get the car in the air... I don't even know how to get the jack under to lift it. Looks like I will need race ramps and a lower profile jack. I am pretty nervous with the chattering from this brake system. It's all very expensive. I'll keep checking and trying suggestions Sent from my iPhone using Tapatalk

04-27-2016, 05:35 PM	#2
D2M Drives: Z/28 Join Date: Oct 2015 Location: NJ Posts: 538	Not normal. Take it in to have it checked out.. Pads are held in by the 2 small pins at the top and bottom of the caliper pad opening. The pins are held in by the spring clip ( Gold element in center of caliper ) and the bolt in bridge ( big bolt in center ) The spring clip puts slight pressuer on everything to keep it all tight and quiet.

04-27-2016, 09:51 PM	#6
JTRATX Drives: 17 SS 1LE, 14 Yukon Denali Join Date: May 2015 Location: Austin, TX Posts: 358	Is the pad moving in the video? Not normal BTW. Pull the wheels and inspect. Sent from my iPad using Tapatalk

04-27-2016, 10:35 PM	#8
Immortan Drives: 2015 Z/28 Black, A/C, Stereo Join Date: Oct 2015 Location: Tucson, AZ Posts: 147	I guess I will schedule with the joyridership tomorrow. It's going to be a long day... time to bust the go-pro out. I absolutely hate letting the techs drive my car. Can only imagine the feeling when you watch your own car rip past you... oh wait... I know that feeling. Sent from my iPhone using Tapatalk

04-28-2016, 10:36 AM	#11
D2M Drives: Z/28 Join Date: Oct 2015 Location: NJ Posts: 538	I would say if one of the springs is off center in the caliper it could be putting more pressure on one pad and less on the other causing one pad to rattle around in the caliper?

04-28-2016, 11:05 AM	#12
Immortan Drives: 2015 Z/28 Black, A/C, Stereo Join Date: Oct 2015 Location: Tucson, AZ Posts: 147	Help/Advise needed - Brakes Thanks for all the insight! I will pick up two 2x4's and check those plates today, but Mgizzle's post made a lot of sense, so thank you. The road is really rough. I usually drove with the windows up so I probably never heard it. Thanks all, just wanted to make sure the most expensive part of the car wasn't falling apart. Sent from my iPhone using Tapatalk

05-02-2016, 11:19 PM	#13
cpole82 Drives: 2015 Z28 Join Date: Nov 2015 Location: Brighton, mi Posts: 31	While I agree with your summary Mgizzle, I assure you these are not Stop Tech brakes. The one-and-only BREMBO produce the Z28 calipers and Rotors