Braking Problems After The Track

[Spence_R32]

So i did my first track day yesterday.

On the way home, and especially today, i have almost no brake pedal. I really have to push hard to get the thing to stop.

I figured i boiled my brake fluid, so i did a complete flush. Its no better.

Im running DBA 4000 all round, with remsa pads. Is it possible i damaged the pads by overheating them?

Also, when stationary, if i press the brake pedal, the front right brake caliper creaks very loudly, and you can feel the pedal is a bit notchy. Rebuild the calipers?

Cheers guys.

[PN-Mad]

Does the pedal go to the floor,OR does the pedal feel almost normal, and lack stopping power?

I think it's he second one, and you have overheated the pads. It's can make the material all brittle, and crumble. Take your pads out, and have a look at them. You'll need higher temp pads for the track in the future.

[Spence_R32]

I took them out, and your right. They seem very brittle and the surface is crumling.

Will the pad be like that all the way though? So point just taking a bit off the surface?

I am also concerned about the creacking from the caliper and the harsh pedal feel.

[PN-Mad]

Toss them out mate, and get a new set on there. They will be heated all the way through.

The creak will most likely be the pad grating on the rotor, because it has no give left in it, and it just wants to judder.

Can I suggest getting a nice street pad like a QFM HPX, and then when going to track days switch to a more track orientated pad. That will keep the pedal happy

[Spence_R32]

Sounds like a plan. Will switching between 2 types of pads effect the rotor?

[PN-Mad]

Yes it will.

Best thing you can do it go through the bedding in process each time you change pads. Other than that, buy 2 sets of rotors, which for the occasional track day, is a bit overkill.

I think Remsas are rated up around 600 degrees or something, so you are pretty hard on the brakes.

Maybe look into upgrades for the future. If your running the stock GTS-t equipment, consider the budget upgrade to 324mm discs (brembo GTR) with the GKTech caliper spacers.

Also check you haven't melted your rubber piston covers in the calipers.

[Spence_R32]

Will do. Thanks for all the advice. muchly appreciated.

[R31Nismoid]

Also side point, when you did a bleed how much oil did you go through to bleed with?

[MrStabby]

I run a single set of rotors and do next to nothing about bedding pads in either way, street to track or track to street. When track pads are cold they work in "abrasive" mode, so swapping them in before you drive to the track gives them a little time to clean up the rotors of the street pad's material, so they're ready for track work. I don't bother cleaning the rotors before swapping back to street... whatev, its just not a problem.

Remsas (like QFM HPX) are a street pad, so they're not up to track work. Minimum track pad should be A1RMs (which are a crossover street/track pad).

Also, Nulon Xtreme Performance Super DOT 4 is a cheap fluid, good for 280 deg C. If you need something higher temp than that it will probably be double the price.

[Spence_R32]

Thanks for the replys. Ill be putting a new set in tomorrow, and ill sort out a set just for the track. Im using that nulan brake fluid. I went through nearly 2 bottles.