YACT: Even the dogs cover their ears after hearing my squealing brakes!

[weirdichi]

Squeals like a mofo from the front when I step on the brakes. I had a trusted mechanic check it and the brakes still have about 70% left on them. I changed the front rotors a year back with new brakes. The brakes in the back were changed last year also by the same mechanic. The brake fluid is fine. The mechanic cleaned the pads and rotors before putting my tires back on.

I can't think of anything else except that the brakes are cheapo brakes (bought them for $19 a pair) as opposed to the ceramics (usually $40 a pair) I bought a couple years back.

1991 Acura Integra RS Hatchback
170k miles (runs like a champ)
Both front and back are brake pads with calipers

 

[ValValline]

Probably some buildup on the pads/rotors. Try making a few (3-5) very hard panic stops (get into the ABS) in a parking lot going forward and reverse at about 10-25mph. This will sometimes break up deposits and get rid of some noise.

 

[Mxylplyx]

Perhaps some brake lubricant needs to be applied to the back of the pads.

 

[funboy6942]

Go to the auto parts store and tell them you want stop squeak (or something like that), its a paste you apply to the back of the pads, can be a red color or a silver color. That will sometimes work. If not moving up to an upper class of pads and the stop squeak goop will make it stop, should be able to apply it yourself with minimal tools and your cars jack, just be sure to goop up both pads on both sides really good, and allow it to cure before putting them back on.

 

[weirdichi]

For the day crew.

 

[funboy6942]

Originally posted by: weirdichi
For the day crew.

What, you dont believe me?

Sometimes a loud noise or high pitch squeal occurs when the brakes are applied. Most brake squeal is produced due to vibration (resonance instability) of the brake components especially the pads and discs (known as ?force-coupled excitation?.) This type of squeal should not negatively affect brake stopping performance. Some simple techniques like adding chamfers to linings, greasing or gluing the contact between caliper and the pads (finger to backplate, piston to backplate), bonding insulators (damping material) to pad backplate, inclusion of a brake shim between the brake pad and back plate, etc might help reduce squeal. Many times cold weather combined with high early morning humidity (dew) could make the brake squeal worse and vanishes when the lining reaches regular operating temperatures. However, some lining wear indicators are also designed to squeal when the lining is due for replacement. Overall brake squeal can be annoying to the vehicle passengers, passerby, pedestrians, etc especially as vehicles are designed to be more comfortable and quieter. Hence vehicle NVH (Noise, Vibration and Harshness) is one of the important priorities for today's vehicle manufacturers.

An age-old trick is to put a small amount of copper slip (copper grease) onto the back of the pads where they contact the brake caliper piston and on the pad shims, if present. While this will normally stop the squeal, getting grease on the pads or disks will affect braking performance.

Dust on the brakes may also cause squeal; there are many commercial brake cleaning products that can be used to remove dust and contaminants from the brakes.

Some mid-performance brake pads, such as PFC pads(which also have many debond issues), will always squeal during operation, and this does not indicate a problem.

Apart from noise generated from squeal, brakes may also develop a phenomenon called brake judder or shudder.

You can get the grease, the adhesive, or even anti squeak shims, just call you local parts store like a napa, big name store with real people working behind the counter, and they will tell you what you need, and Im talking about.

 

[weirdichi]

Originally posted by: funboy42

Originally posted by: weirdichi
For the day crew.

What, you dont believe me?

Sometimes a loud noise or high pitch squeal occurs when the brakes are applied. Most brake squeal is produced due to vibration (resonance instability) of the brake components especially the pads and discs (known as ?force-coupled excitation?.) This type of squeal should not negatively affect brake stopping performance. Some simple techniques like adding chamfers to linings, greasing or gluing the contact between caliper and the pads (finger to backplate, piston to backplate), bonding insulators (damping material) to pad backplate, inclusion of a brake shim between the brake pad and back plate, etc might help reduce squeal. Many times cold weather combined with high early morning humidity (dew) could make the brake squeal worse and vanishes when the lining reaches regular operating temperatures. However, some lining wear indicators are also designed to squeal when the lining is due for replacement. Overall brake squeal can be annoying to the vehicle passengers, passerby, pedestrians, etc especially as vehicles are designed to be more comfortable and quieter. Hence vehicle NVH (Noise, Vibration and Harshness) is one of the important priorities for today's vehicle manufacturers.

An age-old trick is to put a small amount of copper slip (copper grease) onto the back of the pads where they contact the brake caliper piston and on the pad shims, if present. While this will normally stop the squeal, getting grease on the pads or disks will affect braking performance.

Dust on the brakes may also cause squeal; there are many commercial brake cleaning products that can be used to remove dust and contaminants from the brakes.

Some mid-performance brake pads, such as PFC pads(which also have many debond issues), will always squeal during operation, and this does not indicate a problem.

Apart from noise generated from squeal, brakes may also develop a phenomenon called brake judder or shudder.

You can get the grease, the adhesive, or even anti squeak shims, just call you local parts store like a napa, big name store with real people working behind the counter, and they will tell you what you need, and Im talking about.

It's not that I don't believe you, I just wanted as much input as possible. Thank you for your great input.