RACER

[QUOTE=Project22a,Sep 29 2006, 01:15 PM]This whole glazing the brakes thing,

SpitfireS

s2k_9000rpm Posted on Sep 29 2006, 10:33 PM
[QUOTE] ...its working just like the tingle for that shampoo

s2k_9000rpm

TheWingMang

Brake components (specifically rotors and pads) have specific heat thresholds depending on the intended purpose. I don't know numbers offhand, but for arguement we'll say standard street pads are good between 0 and 800 degrees fahrenheit (sp). If you exceed 800, your brakes start to stink, the pedal is softer and goes down further, and your braking force just sucks. This is brakefade. No permanent damage. Once the components return to correct operating temperature they will be right as rain.

Glazing is different. I think the exact cause is extreme heat increase in a very short period of time (think threshold braking). Anyway, most of the materials in brake pads are the same materials that are in glass. If the pads go through a critical heat cycle, they literally turn into glass. Glass does not provide a lot of stopping power.

If your pads are glazed, your braking will just be significantly less powerful than expected. If you think they might be glazed, pop out your pads and check them. They'll be shiny and feel... well, like glass. These pads are garbage, unless you can properly shave off the layer of glass.

I just changed out glazed pads on my car. Plenty of material left, but they were trash

jzz30

yea you will also notice if you overheat the brakes because you will need to step harder on the brake to slow down even when the brakes are at a normal operating temp. i first noticed this when i drove my friends car that was bought 2 weeks before mine but never tracked.

Jasonoff

why are they garbage?

TheWingMang

Because the pad material is no longer sand and gritty stuff. It's glass. Unless you can cut off the layer of glass smoothly, then they're done. You might be able to, but my pads are cheap, so I haven't tried it

RACER

Thats why they glazed

Jasonoff

I've used corse grit sandpaper on pads before

TheWingMang

Lol yeah that was probably a part of it. But I drive a Civic, so even Hawk pads are cheap. Rear drums, best shoes I can find are $12 for a pair