Ok so I bedded the new XP8 brakes a week ago. It worked for 24 hours and squealing came back full force (Louder than any bus or truck). I did it half *** on the bedding because I was afraid of slamming on the brakes that hard that many times so this time I decided to go all out and follow the instructions since last time I did it the fading was not that much and I still had brakes.

So tonight.

I got out to the country road and went 100kmph to 30kmph roughly 8-10 times fairly hard on the brakes (last time it was 100-50 about 8 times). I turned around at the round about using minimal braking but still some and then drown back down for 10 mins cruising at 50kmph without touching the brakes once thinking they're cooling off. One street before the freeway entrance I got a red light and I was down shifting because I was still trying to use minimal brakes till I get home. Just before the light I had ZERO braking power. The brake peddle went all the way down as if I just drained them and no matter how many times I pumped it never came back. Luckily there was a small uphill so I put it in neutral and let it slow down some more and then put it in reverse (automatic so no grinding) and the car finally got 0kmph and then i put it in park quickly. At 2kmph the brakes couldn't stop!! There was no pressure in the brakes still so I let it cool off for 20 mins, went back in and pumped the brakes successfully and thank god the brakes worked then!

It was odd because I drove for 10 mins without touching the brakes and it got worse, not better! Last week after my bedding I did the exactly same thing and I had 100% brakes by the end, no fading at all. Had I gotten onto the freeway this post would have been a crash post with some bad pics on the freeway. It was scary as hell not being able to stop from 2km/hr yet alone 100km/hr.

PS: Sorry if the title is inappropriate, it's just how I'm feeling right now.

WTF is wrong with you? Read the post before putting out a smart *** statement. I wasn't bleeding the air from the brakes, I was bedding the brakes as the instructions on the brakes said so and as recommended by numerous people on this site when I said my new brakes were squealing bad.

Also thanks for the advice but I think next time if I ever get into this situation, I'll risk my tranny over my life and putting it into reverse instead of running a red light and taking a chance getting hit by a truck. Going 2kmph on an automatic does almost nothing bad to the tranny, on a manual yes but on an auto, there's no grinding or any weird noises.

 

Have your car towed to the dealer or a local mechanic. You can't bleed the air from brake lines by driving around and slamming on the brake pedal. Your going to kill someone. Putting you auto trans in reverse while rolling your forward is a real great idea too.

 

Congrats, you boiled the fluid. Immediate system bleed with better fluid will get you fixed right up. I prefer Castrol SRF.

 

Have your brakes blead. I also had a bad squealing problem and went to GM ceramic pads. Never had to bed them in. No dust and no more squeal.

 

The e-brake will still work if you lose the brake pedal.

 

Thanks, I'll get that done first thing tomorrow. I wasn't sure what was happening but it was scary as hell.

 

Ebrake FTW

 

 

Who is F. King?

 

and while your at it fill out your forum profile. Regarding your post title, just because you feel mad doesn't mean you have to act it out "self control"

 

No need for a thread title like that...............Please follow the rules on verbiage: http://forums.corvetteforum.com/show....php?t=1130391

 

Its not air he boiled the brake fluid duh.
z51vett

 

You do realize you're dealing with race pads, right?

From the Carbotech website:

"Carbotech XP8™ (1108™): A high torque brake compound with a wide operating temperature range (200°F-1350°F+). Carbotech XP8™ is the first of our racing compounds. Outstanding initial bite at race temperatures........Carbotech does NOT recommended XP8™ as a daily driven street pad due to elevated levels of dust and noise."

They are a race pad and they're designed to work properly when they are up to temp when running on a road course. When you do get them up to temp you're going to also raise the temp of your fluid. You need a racing fluid with a higher boiling point because if you boil your fluid your brake pedal will lose pressure and go to the floor.

If you're driving on the street, use a street pad designed to work at the temps you're dealing with on the street, i.e. lower temps and OE fluid or a DOT 3 will work fine.

If you're tracking the car, you can use a more aggressive track pad that works well at higher temps, and you'll need a good high boiling point DOT 4 fluid.

Bob

 

 

I know hind sight is always 20/20, but in a split second oh crap moment, everyone don't forget the emergency brake. Keep the button in with your thumb, and work it as needed.

As other noted, better brake fluid with higher boiling point is needed.

 

Wrong, when you boil brake fluid it forms air bubbles just like boiling water. If you don't know what you are talking about please don't post.

 

It's very odd that such little braking would cause fluid fade, and that the pedal would be unrecoverable after such a long cool down.

 

I use Motul 600 fluid but same principle...using 'better' brake fluid helps.

You likely don't need it but here's a good article on bedding brakes. Someone might find it helpful.

http://www.zeckhausen.com/bedding_in_brakes.htm