Brake Issues

yaoxiao4 · 07-10-2018, 01:10 AM

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?

Spooler · 07-10-2018, 02:16 AM

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

yaoxiao4 · 07-10-2018, 02:23 AM

Quote:

Originally Posted by Spooler

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

2011 Nismo#91 · 07-10-2018, 08:49 AM

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.

yaoxiao4 · 07-10-2018, 11:45 AM

Quote:

Originally Posted by 2011 Nismo#91

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

Hotrodz · 07-10-2018, 12:19 PM

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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Spooler · 07-10-2018, 12:27 PM

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

Hotrodz · 07-10-2018, 12:34 PM

Quote:

Originally Posted by Spooler

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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yaoxiao4 · 07-10-2018, 02:32 PM

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

Hotrodz · 07-10-2018, 02:37 PM

Quote:

Originally Posted by yaoxiao4

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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Hotrodz · 07-10-2018, 02:41 PM

Quote:

Originally Posted by Hotrodz

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

Sent from my SM-G965U using Tapatalk

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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yaoxiao4 · 07-10-2018, 02:43 PM

Quote:

Originally Posted by Hotrodz

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.

Sent from my SM-G965U using Tapatalk

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

Hotrodz · 07-10-2018, 02:51 PM

Quote:

Originally Posted by yaoxiao4

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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Hotrodz · 07-10-2018, 02:53 PM

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

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yaoxiao4 · 07-10-2018, 02:56 PM

Quote:

Originally Posted by Hotrodz

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

07-10-2018, 01:10 AM	#1 (permalink)
yaoxiao4 Enthusiast Member Join Date: Feb 2017 Location: Bay Area Posts: 320 Drives: 13 370z Black M6 Rep Power: 8	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? DarkJak likes this.

07-10-2018, 02:16 AM	#2 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,830 Drives: 2013 Nismo 370z Rep Power: 2684392	Sounds like you need the Stillen brake duct upgrade. Nothing more you can really do. Hotrodz likes this.

07-10-2018, 08:49 AM	#4 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,401 Drives: slowly Rep Power: 40569	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. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

07-10-2018, 12:19 PM	#6 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	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. Sent from my SM-G965U using Tapatalk __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

07-10-2018, 02:32 PM	#9 (permalink)
yaoxiao4 Enthusiast Member Join Date: Feb 2017 Location: Bay Area Posts: 320 Drives: 13 370z Black M6 Rep Power: 8	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 Hotrodz likes this.

07-10-2018, 12:27 PM	#7 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,830 Drives: 2013 Nismo 370z Rep Power: 2684392	Finite Element Design has the Nismo carbon brake ducts. That is what I have waiting for me to install.

07-10-2018, 02:53 PM	#14 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	I know Speed Ventures will be there is September as well. Sent from my SM-G965U using Tapatalk __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

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