Brake Issues
 

Hi,

I've been running into a lot of brake issues lately (mostly on Laguna Seca)

I installed the Z1 2 Piece fronts and 1 piece performance rears with carbotech xp 10/8, with SS brake lines and rbf600 fluids.

a couple months ago I ran with that setup and it left nasty marks on the rotors and I had to try to clean them off (rebedding), and it made loud screeching noises after the track day, but since I didn't feel any vibration or fade I just sort of ignored it

last Friday I ran there again and this time, the first session my rotors again had very nasty marks all over them. In the second session my brakes felt spongy and shortly after pedal went all the way to the floor with barely any stopping power (boiled fluid?). I waited a few hours before next couple sessions and the car ran fine. However the marks are still there.


My question is do you guys run into this issue too? if so other than brake ducts / control arm deflectors is there anything I can really do?

Sounds like you need the Stillen brake duct upgrade. Nothing more you can really do.

I was looking at that, but I'm getting an amuse bumper and it doesn't look like it would fit, maybe I need custom ducts or something. Hopefully the larger mouth opening will help

By nasty marks I am assuming you mean you have hot spots on your rotors. Unless your getting vibrations I wouldn't bother changing them. I got them before and they went away after some normal driving. Now I used Frozenrotors and they seem to be holding up much better and they are not much more then OEM blanks. There's also a 10% off code I found here. Those brakes are going to be loud, it's normal. I am getting the stillen front bumper and cooling ducts installed "soon". You can try RBF660 but be mindful it has a much higher tendency to suck up water from the air. Also you might want to get a basic brake fluid tester or just change the fluid prior to every event. Can't think of anything else you could try.

:/ I did upgrade the rotors, the fronts are the Z1 2 piece slotted rotors, they're holding much better than the rear slotted z1 performance rotors but still bunch of hot spots, and rebedding them on the highway helped a little bit but not too much.

Probably going to look at custom brake ducts or something for my bumper, thanks for the suggestions though

You can use APR NACA ducts like I have done. You can also reach out to Russ at Z1 and see what brake ducts they are running on their Amuse front bumper as well. You should also get some titanium backing plates as well. As stated above don't worry about the discoloration as it is normal along with the squealing. You can always add some brake grease to cut down on the noise.

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Finite Element Design has the Nismo carbon brake ducts. That is what I have waiting for me to install.

Yup but I don't know if they will work on an amuse front bumper! If he is not set on the amuse front bumper I would recommend the 09 to 14 Nismo front bumper as it flows more air and then he can get FE Design Nismo stuff!

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yeah the amuse bumper is already on the way here from Japan, but I'll take a look at the Z1 car and see what they do, thanks! hopefully Sonoma will be a less brake intensive track

Order the titanium backing plates and they should help some as well for now.

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Are you going to Sonoma with NASA or some other group? My partner wants to head to Sonoma in September to do the NASA event.

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I was thinking of doing a simraceway school to get reacquainted with the track, then looking at SpeefSF events. My friend rolled with NASA at Sonoma last year and he really didn't like it, a lot of incidents and cars were 40 seconds apart in timing sharing the same run group

Well that ain't cool. NASA is supposed to be safe!



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I know Speed Ventures will be there is September as well.

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I've heard good things about speed venture, but give speedsf a look, I think they're probably one of the most popular ones here in NorCal. HookedOnDriving is great too but a little on the pricey side

Right on! I will check them out.

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Let me guess group 2? That group has the largest difference in driver ability and more incidents because it's the first solo group, but they are still rare to occure. The time difference isn't too big of a deal if the driver's are aware of it.

from what he described it looked like an one off event that was poorly ran, FWIW he was in group 4.

I think the car count was massive and they didn't have proper instruction or briefing for some of the groups, he ended up writing a letter to NASA and they acknowledged it. Hopefully this year's event will be much better

Group 3 is always the best group as everyone wants to mind their P & Qs so they can get to group 4. Group 4 always has a couple of drivers who think they are real racecar drivers and can do stupid. That being said speed difference in that group is going to be wide as stated because you got everything from a miatas to to z06s on the track.

To bad the organizers didn't do their job. It leaves a bad taste in everyone's mouth.

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You also don't want to over cool as well as track pads do need some heat in them to work properly! You may need a more aggressive pad or a bbk as well as going to a 3" hose.

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I can definitely vouch for SpeedSF as well, all the HPDEs I've done with them were exceptional.

Don't run with NASA up here in NorCal, it's like driving through a maze

Thank everyone for the feedback about NASA NOR CAL.

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Speedsf is legit. You get 5 sessions instead 4 like with nasa, its more laid back and they seem to enforce the point by passing rules more (as in theyll have a talk with you if youre being a **** and not letting anyone by). Run groups 3 and 4 with nasa are fine, but when i was in 2 i wanted to blow my head off - you run with group 1, its way too many people on track and theyre all super slow. I do recommend nasa if its your first time out on track or not comfortable yet. Either way yea check out speedsf

Might have answered already but you letting the brakes cool down all the way? Ill do my last lap without touching the brakes unless i see the flag at the corkscrew, then ill drive around the paddocks for a while. Laguna beats up the brakes really bad