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Discussion Starter · #1 ·
Hi all!
Today I drove in a slalom and the car gave me a big scare.
I ran two laps and everything was great. After exit the circuit I drove slow the car and when I was parking the car didn't brake!! I was pushing the break pedal and the car was still moving fortunately I was driving like a 1 mile per hour and either the hand break was working in fact the hand break when I pulled it was more up, like 2 or 3 times as normally. Finally the car stopped by himself after 1 minute all came to normality.
I have a hawk ceramic breaks since 3 months, thanks all for your help!
 

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What kind of brake fluid are you using...... you still using stock fluid? Maybe it was so hot it wasn't working properly. When it cooled down, did you have brakes again?
 

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Discussion Starter · #3 ·
Hi. Yes is stock break fluid. And yes after cooled started work normally. So maybe is that?

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I'd change it out for some Stoptech or Motul high temp fluid. Def your problem in my opinion, your brake fluid was probably boiling when you first came off the course.
 

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Fluid got overheated.
You must change the both the brake and Clutch line fluid asap. They share the same reservoir.
Good luck.
 

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Discussion Starter · #6 ·
Hi thanks for all your quick answers. I'll definitely change the liquid but about to change clutch fluid in some posts said the fluids doesnt mix so unless you have 50k miles you dont need to change the cluth fluid but I'll do more research about that!
 

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Hi thanks for all your quick answers. I'll definitely change the liquid but about to change clutch fluid in some posts said the fluids doesnt mix so unless you have 50k miles you dont need to change the cluth fluid but I'll do more research about that!
I suggest you flush the clutch line as well. Its easier than the brakes, and you are going to be in there anyway. They share the same fluid reserves, so contamination is very likely. It just takes a little bit of fluid, and is good piece of mind. Oh, and take the time to read what the fluid temps really are, i had a chart that laid it out nicely, but im on my phone right now. Sorry.

Our cars are notorious for brake cooling issues, and there are plenty of threads devoted to ways to remedy this.

Most people do a fluid swap to something with superior boil temps.

Look into brake ducting. Either homemade or even one of the excellent kits from Velossa Tech.

Stepping up the pads for events is a good move.

Then eventually you would move to a big brake kit if you are still out driving your brakes.
 

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Hi thanks for all your quick answers. I'll definitely change the liquid but about to change clutch fluid in some posts said the fluids doesnt mix so unless you have 50k miles you dont need to change the cluth fluid but I'll do more research about that!
https://www.lelandwest.com/brake-fluid-comparison-chart.cfm?startRow=1&SF=5&ST=2

Here's that list. I'm about to switch to Wilwood EXP, Im running Wilwood 570 right now. Cost to temp though, the XP is nice.

Motul 660 is a joke, its not even 620, let alone 660. Which is why I offer this handy chart, to educate people, and help steer them in the right direction.
 

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There is no need to change the clutch line fluid. I've boiled the fluid in the calipers more times than I can count and never had a problem with the clutch.

As long as you bleed the calipers you will be fine. What boils in the calipers stays in the calipers. When you bleed the calipers you will see a distinct demarcation of the boiled fluid. You'll go from the color of Coke to the color of a crappy pilsner very quickly. It does not contaminate the entire brake system and it will not contaminate the clutch system. Having said that, your brakes feel "normal" right now but they are not. Once you bleed the calipers you will realize that "normal" should have about 20% less travel in the pedal than what you feel now.

BTW, what exactly is a slalom? I imagine it as a series of cones in straight line that you are weaving through. Why are you braking? For a turn around? Is there video of this?
 

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There is no need to change the clutch line fluid. I've boiled the fluid in the calipers more times than I can count and never had a problem with the clutch.

As long as you bleed the calipers you will be fine. What boils in the calipers stays in the calipers. When you bleed the calipers you will see a distinct demarcation of the boiled fluid. You'll go from the color of Coke to the color of a crappy pilsner very quickly. It does not contaminate the entire brake system and it will not contaminate the clutch system. Having said that, your brakes feel "normal" right now but they are not. Once you bleed the calipers you will realize that "normal" should have about 20% less travel in the pedal than what you feel now.

BTW, what exactly is a slalom? I imagine it as a series of cones in straight line that you are weaving through. Why are you braking? For a turn around? Is there video of this?
It'd be funny if your clutch system is why you keep boiling fluid, CHANGE IT MARC!!! BLARGWHARBLE!!!!!!!!!!!

Yeah, the OP was a bit vague on what exactly his auto activity was.

For the little bit of fluid and time, I will continue to suggest bleeding out the clutch while you are bleeding brake fluid out that reservoir anyway. Just to be on the safe side. It's probably fine, but its not much involved for piece of mind.

The bulk of the nastiness is at the calipers for sure, everytime i bleed them out I am gross/intrigued by how fubar the fluid gets. More so on the wilwoods than on the OEM calipers iirc.
 

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Thread title updated from "break" to "brake".
 

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It did drive me crazy seeing the wrong "brake" used. One of my pet peeves for sure.

Thank you, O' Moderator!!
I was expecting a very different thread until I saw it was in the brake section. At first I was like "Yes! It didn't break!", to awww...it didn't stop.
 

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BTW, what exactly is a slalom? I imagine it as a series of cones in straight line that you are weaving through. Why are you braking? For a turn around? Is there video of this?
Slalom is a term often used in other countries to refer to an autocross
 

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It'd be funny if your clutch system is why you keep boiling fluid, CHANGE IT MARC!!! BLARGWHARBLE!!!!!!!!!!!
No, it was my improper use of the brake pedal on track (which has since been corrected). If it makes you feel better, I have swapped out the clutch fluid a couple of times.
 
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No, it was my improper use of the brake pedal on track (which has since been corrected). If it makes you feel better, I have swapped out the clutch fluid a couple of times.
I will sleep well tonight. Thank you.
 
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I use he Wilwood 570 fluid and I have never had a fluid issue. I do bleed enough fluid to clear the calipers every other event.

Not sure if ceramic pads are up to the task as well.
 
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