Brake fluid leak from caliper

Optimiser · 08-29-2016, 01:33 AM

This exact same bleeder nipple leak thing happened to me on the track to.

Jsolo · 08-29-2016, 09:57 AM

Is this consistent on both calipers or just one?

carlitos_370z · 08-29-2016, 11:23 AM

Same happen to my Z... in the rear left caliper last time I track the car. But was just a little

Rusty · 08-29-2016, 04:04 PM

Quote:

Originally Posted by Jsolo

Is this consistent on both calipers or just one?

Depends on the track and your driving style. You could go from none leaking, to all of the nipples leaking.

loufitness · 08-29-2016, 07:37 PM

Also happened on my 2014...running XP8's. Front two calipers at the same rate. I checked tightness between runs...in which both were extremely tight. Not sure if there is a torque spec for this nipples or not.

Halfkiddio · 09-08-2016, 10:31 AM

The torque spec on bleeder screws are usually in the range of 8 ft/lb's. And to further provide evidence of this, my front caliper's have done the same thing as your's. It's from the cheap caliper design expanding under high heat levels. However, i've not seen the rear calipers suffer from this issue. Did you have VDC turned off during the track day?

Rusty · 09-08-2016, 11:26 AM

I've had all 4 calipers leak at one time or another. And yes, I track with the VDC off.

carlitos_370z · 09-08-2016, 11:59 AM

Same here VDC off all the time when i track my car

Halfkiddio · 09-08-2016, 01:49 PM

Interesting. I guess I just don't use the brakes that much on the dragon to get the rears hot enough.

Edit: To expand on this before any questions, I have only had the fronts do this twice. After the second time, I drilled not using the brakes as much into my brain again, as I had forgotten that when I went from my old eclipse with Brembo's to the Z.

Kamillio · 09-08-2016, 02:16 PM

VDC is always turned off for track day!

Sent from my iPhone using Tapatalk

Halfkiddio · 09-08-2016, 02:20 PM

That's good. One thing you can do to help expel heat from the calipers is to use two piece rotors, and titanium pad shims. You can find a few two piece rotors for the fronts, but the rears are from Z1 only. the Ti pad shims can be found at Hard Brakes.

https://hardbrakes.com/index.php?mai...roducts_id=106

JARblue · 09-08-2016, 02:43 PM

Turning off VDC does not turn off ABLS, which is responsible for applying the brakes to the rear wheels when it detects wheel slip. Since you're only experiencing this on the rear brakes, I would guess ABLS is the culprit. I think you have to remove the Stop Lamp fuse to turn it off.

Rusty · 09-08-2016, 08:48 PM

Quote:

Originally Posted by Halfkiddio

That's good. One thing you can do to help expel heat from the calipers is to use two piece rotors, and titanium pad shims. You can find a few two piece rotors for the fronts, but the rears are from Z1 only. the Ti pad shims can be found at Hard Brakes.

https://hardbrakes.com/index.php?mai...roducts_id=106

I have the RC brake ducts, the Hard Brakes Ti pad shims, Racing Brake 2 piece rotors front and REAR.

cv129 · 09-08-2016, 09:07 PM

^offset by the extra brake heat due to the grip from the ginormous big booty trudy tires

Rusty · 09-09-2016, 12:00 AM

Quote:

Originally Posted by cv129

^offset by the extra brake heat due to the grip from the ginormous big booty trudy tires

08-29-2016, 09:57 AM	#17 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 14	Is this consistent on both calipers or just one? __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

08-29-2016, 07:37 PM	#20 (permalink)
loufitness Base Member Join Date: Apr 2014 Location: Louisville, Ky Posts: 74 Drives: 14 370Z Pearl White Rep Power: 3366	Also happened on my 2014...running XP8's. Front two calipers at the same rate. I checked tightness between runs...in which both were extremely tight. Not sure if there is a torque spec for this nipples or not. carlitos_370z likes this. __________________ 2014 Pearl White Sport Pkg / Motordyne Shockwave / 25 Row Setrab / SS Brake lines / Motul RBF 600 / Hawk DTC-60 / SPL Upper Control Arms / Enkei RP07 / Hankook RS4 275/40/18 Square / Schroth Harness / EVO-R Carbon Fiber Accents / Bilstein B16 PSS 10

09-08-2016, 11:26 AM	#22 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,186 Drives: 2011 Nismo GM 6M Rep Power: 2684437	I've had all 4 calipers leak at one time or another. And yes, I track with the VDC off. JARblue and carlitos_370z like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

09-08-2016, 02:16 PM	#25 (permalink)
Kamillio Enthusiast Member Join Date: Mar 2015 Location: FL Posts: 445 Drives: N/A Rep Power: 51	VDC is always turned off for track day! Sent from my iPhone using Tapatalk carlitos_370z likes this. __________________ 370z

09-08-2016, 02:20 PM	#26 (permalink)
Halfkiddio Enthusiast Member Join Date: Jan 2015 Location: Knoxville Age: 30 Posts: 250 Drives: 09 RAE 370Z Rep Power: 10	That's good. One thing you can do to help expel heat from the calipers is to use two piece rotors, and titanium pad shims. You can find a few two piece rotors for the fronts, but the rears are from Z1 only. the Ti pad shims can be found at Hard Brakes. https://hardbrakes.com/index.php?mai...roducts_id=106 DarkJak and carlitos_370z like this.

08-29-2016, 01:33 AM	#16 (permalink)
Optimiser Enthusiast Member Join Date: Mar 2013 Location: Australia Posts: 455 Drives: 2012 Nissan 370Z MT Rep Power: 20144	This exact same bleeder nipple leak thing happened to me on the track to.

08-29-2016, 11:23 AM	#18 (permalink)
carlitos_370z A True Z Fanatic Join Date: Jul 2013 Location: Puerto Rico Posts: 7,157 Drives: 13 Nissan 370Z SP M6 Rep Power: 7586	Same happen to my Z... in the rear left caliper last time I track the car. But was just a little

09-08-2016, 10:31 AM	#21 (permalink)
Halfkiddio Enthusiast Member Join Date: Jan 2015 Location: Knoxville Age: 30 Posts: 250 Drives: 09 RAE 370Z Rep Power: 10	The torque spec on bleeder screws are usually in the range of 8 ft/lb's. And to further provide evidence of this, my front caliper's have done the same thing as your's. It's from the cheap caliper design expanding under high heat levels. However, i've not seen the rear calipers suffer from this issue. Did you have VDC turned off during the track day?

09-08-2016, 11:59 AM	#23 (permalink)
carlitos_370z A True Z Fanatic Join Date: Jul 2013 Location: Puerto Rico Posts: 7,157 Drives: 13 Nissan 370Z SP M6 Rep Power: 7586	Same here VDC off all the time when i track my car

09-08-2016, 01:49 PM	#24 (permalink)
Halfkiddio Enthusiast Member Join Date: Jan 2015 Location: Knoxville Age: 30 Posts: 250 Drives: 09 RAE 370Z Rep Power: 10	Interesting. I guess I just don't use the brakes that much on the dragon to get the rears hot enough. Edit: To expand on this before any questions, I have only had the fronts do this twice. After the second time, I drilled not using the brakes as much into my brain again, as I had forgotten that when I went from my old eclipse with Brembo's to the Z.

09-08-2016, 02:43 PM	#27 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Turning off VDC does not turn off ABLS, which is responsible for applying the brakes to the rear wheels when it detects wheel slip. Since you're only experiencing this on the rear brakes, I would guess ABLS is the culprit. I think you have to remove the Stop Lamp fuse to turn it off. carlitos_370z likes this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

09-08-2016, 09:07 PM	#29 (permalink)
cv129 A True Z Fanatic Join Date: Jul 2011 Location: Dallas, TX Posts: 3,223 Drives: 09 Nismo, 16 Nismo Rep Power: 163995	^offset by the extra brake heat due to the grip from the ginormous big booty trudy tires Rusty likes this. __________________ Setrab \| RE-71 \| SPL \| JRZ \| Nismo \| ARK \| Whiteline \| RacingBrake \| CJM Oil Pan \| Ti shield

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