F/R brake temperature?

2011 Nismo#91 · 09-25-2019, 05:19 AM

Quote:

Originally Posted by obender66

How much difference there should be between front and rear brake temps after lapping session?
I have about 100 C. difference f/r. I understand that fronts work harder, but it is about 40% temp difference.
I wonder if I should get more aggressive pad for the rear to make them work harder.
Thoughts?

If your not having brake issues then don't fix your brakes.

Hotrodz · 09-25-2019, 09:06 AM

Quote:

Originally Posted by 2011 Nismo#91

If your not having brake issues then don't fix your brakes.

Exactly! If you are not having any of the common issues like ice mode, brake fade or over cooking your brakes then you are good to go. I don't know what your skill level is but as you get faster you will need to add brake cooling and possibly more aggressive pads. As stated above at that point you will need to talk to someone with experience and find the combo that works best for you. I would also limit the number of experts you talk to as well as it will complicate things. I use a couple of different of speed shops for their specific specialty. Although I live by the premise, keep it simple stupid there is nothing simple about track car setup the better you get as a driver and you are able to exploit the limits of your car.

osbornsm · 09-25-2019, 10:29 AM

Run nothing less than Motul RBF or Castrol SRF brake fluid.

The most important temperature you need to be concerned with your brakes... is the Caliper temperature.

The rotors get 1000+ F with track use.

As long as the CALIPER (that holds the fluid) remains below the boiling point of your fluid, you're good. This is why TI shims behind your brake pads are so effective.

...Most people jump out of their cars to open the hood, or check tire pressure.
I, on the other hand, measure caliper and rotor temps. If rotors are still 700+ after cool down lap then i drive a mile around the paddock to cool some more.

Rusty · 09-25-2019, 10:19 PM

You never want to park the car with smoking hot brakes after a session. The pads will transfer material to the rotors causing a high spot. When I park. I try to park on a slop. After about 10 minutes. I will drift the car forward about one half of a tire rotation. This puts the pads in a different spot on the rotors.

And don't put the e-brake on either. It may stick.

I've gotten the 'bono's hot enough to leak around the bleeders on both front and back.

obender66 · 09-27-2019, 05:09 PM

Quote:

Originally Posted by 2011 Nismo#91

If your not having brake issues then don't fix your brakes.

Seriously? We all are driving stock cars here....just like Nissan built them.

09-25-2019, 10:29 AM	#3 (permalink)
osbornsm A True Z Fanatic Join Date: Jun 2011 Location: WHAT Posts: 2,551 Drives: 2018 Camaro SS 1LE Rep Power: 426	Run nothing less than Motul RBF or Castrol SRF brake fluid. The most important temperature you need to be concerned with your brakes... is the Caliper temperature. The rotors get 1000+ F with track use. As long as the CALIPER (that holds the fluid) remains below the boiling point of your fluid, you're good. This is why TI shims behind your brake pads are so effective. ...Most people jump out of their cars to open the hood, or check tire pressure. I, on the other hand, measure caliper and rotor temps. If rotors are still 700+ after cool down lap then i drive a mile around the paddock to cool some more. Rusty and Hotrodz like this. __________________ 2018 Camaro SS 1LE (455hp) - 2011 Nissan 370z (333hp) - 2004 VW R32 (240hp) - 2000 Civic Si (160hp)

09-25-2019, 10:19 PM	#4 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,580 Drives: 2011 Nismo GM 6M Rep Power: 2684440	You never want to park the car with smoking hot brakes after a session. The pads will transfer material to the rotors causing a high spot. When I park. I try to park on a slop. After about 10 minutes. I will drift the car forward about one half of a tire rotation. This puts the pads in a different spot on the rotors. And don't put the e-brake on either. It may stick. I've gotten the 'bono's hot enough to leak around the bleeders on both front and back. Hotrodz likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html Last edited by Rusty; 09-25-2019 at 10:22 PM.

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