Cracks in rotors

BGTV8 · 07-18-2021, 05:39 PM

Cracks that extend to the edge of the rotor mean the rotors are toast.

Brake judder on the track and no judder on the road usually means you have hard spots on the rotor from heat soak at the end of a track session.

When a session ends, don;t park the car and leave it, you need to move the can forward 2 feet every minute or so such that no single spot on the rotor stays under the hot pads for more than a minute of so - which leads to differing hardness in the rotor

Also, what pads are you using on the track .... same as DD pads ?

And do you have any rotor cooling set up ?

danegrey · 07-18-2021, 06:53 PM

Quote:

Originally Posted by BGTV8

Cracks that extend to the edge of the rotor mean the rotors are toast.

Brake judder on the track and no judder on the road usually means you have hard spots on the rotor from heat soak at the end of a track session. never knew this

When a session ends, don;t park the car and leave it, you need to move the can forward 2 feet every minute or so such that no single spot on the rotor stays under the hot pads for more than a minute of so - which leads to differing hardness in the rotor -- good idea

Also, what pads are you using on the track .... same as DD pads ?

Carbotech XP10 front/Carbontech XP 8 rear

Quote:

And do you have any rotor cooling set up ?

yes I have stillen braking cooling in place

Thanks all for helping and the education

pictures:

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IMG-3690 (1).jpg

Rusty · 07-18-2021, 08:04 PM

Your rotors are toast. You got cracks in the drilled holes. You should know better then to track with drilled rotors.

They always start to crack at the holes.

danegrey · 07-20-2021, 01:43 PM

Quote:

Originally Posted by Rusty

Your rotors are toast. You got cracks in the drilled holes. You should know better then to track with drilled rotors.

They always start to crack at the holes.

I known now, I young and foolish

Rusty · 07-20-2021, 03:19 PM

Quote:

Originally Posted by danegrey

I known now, I young and foolish

Learning the hard way gets $$$$

Tractionless · 07-22-2021, 08:15 AM

Quote:

Originally Posted by Rusty

Your rotors are toast. You got cracks in the drilled holes. You should know better then to track with drilled rotors.

They always start to crack at the holes.

Same could be said about removing the steering lock fuse. Fact of the matter is no one listens then wants to complain and send out an SOS when it all goes south.

07-18-2021, 05:39 PM	#1 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,516 Drives: 09 Nissan 370Z M6 Rep Power: 39975	Cracks that extend to the edge of the rotor mean the rotors are toast. Brake judder on the track and no judder on the road usually means you have hard spots on the rotor from heat soak at the end of a track session. When a session ends, don;t park the car and leave it, you need to move the can forward 2 feet every minute or so such that no single spot on the rotor stays under the hot pads for more than a minute of so - which leads to differing hardness in the rotor Also, what pads are you using on the track .... same as DD pads ? And do you have any rotor cooling set up ? JARblue, Rusty and Hotrodz like this.

07-18-2021, 08:04 PM	#3 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,571 Drives: 2011 Nismo GM 6M Rep Power: 2684440	Your rotors are toast. You got cracks in the drilled holes. You should know better then to track with drilled rotors. They always start to crack at the holes. JARblue, gomer_110, Hotrodz and 2 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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