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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

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Old 07-10-2018, 12:10 AM   #1 (permalink)
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Default 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?
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Old 07-10-2018, 01:16 AM   #2 (permalink)
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Sounds like you need the Stillen brake duct upgrade. Nothing more you can really do.
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Old 07-10-2018, 01:23 AM   #3 (permalink)
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Originally Posted by Spooler View Post
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
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Old 07-10-2018, 07:49 AM   #4 (permalink)
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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.
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Old 07-10-2018, 10:45 AM   #5 (permalink)
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Originally Posted by 2011 Nismo#91 View Post
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
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Old 07-10-2018, 11:19 AM   #6 (permalink)
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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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Old 07-10-2018, 11:27 AM   #7 (permalink)
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Finite Element Design has the Nismo carbon brake ducts. That is what I have waiting for me to install.
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Old 07-10-2018, 11:34 AM   #8 (permalink)
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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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Old 07-10-2018, 01:32 PM   #9 (permalink)
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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
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Old 07-10-2018, 01:37 PM   #10 (permalink)
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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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Old 07-10-2018, 01:41 PM   #11 (permalink)
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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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Old 07-10-2018, 01:43 PM   #12 (permalink)
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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
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Old 07-10-2018, 01:51 PM   #13 (permalink)
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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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Old 07-10-2018, 01:53 PM   #14 (permalink)
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I know Speed Ventures will be there is September as well.

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Old 07-10-2018, 01:56 PM   #15 (permalink)
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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
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