Nine Lives Racing: Time For a Brake Yob!

I've been working at PFC for a while now. well it's finality time I gave the wife's car a little TLC

Got her 350z roadster up in the air.

About 75k miles ago, I sourced my rotors from FrozenRotors.com. These little bad boys lasted me a while!

I pulled the pins out of the Brembo caliper. This will release the pads

To compress the caliper pistons I grip the top of the pads and squeeze. The pad will push the pistons back into the caliper, while using the rotor as a leaver. After this the pads are toast, but I knew that going into this project.

After that I pulled the pads and unbolted the caliper. I placed the rotor on the ground to compare it to the new 2 piece rotors.

You can see the directional veins. This feature increase air speed flowing out of the rotor, keeping it cooler.

The cheaper way of making a rotor is not have non directional or straight veins. This means the rotor was built to a price, and not to be built as good as it could be. Having directional veins is a mark of a purpose built rotor.

By now you have also noticed the 2 piece design. The aluminum hat and iron rotor is dome for numerous reasons. Excuse me while I go full nerd!

scale pictures sourced from my 350z

Weight: This combo will save 5lbs per corner. Rotational energy is the hardest to stop. Saving 5 lbs will help stopping distances. Ride quality and grip will increase.

Prevent rotor coning/drag.
When a rotor gets hot it will grow, this is called thermal expansion. When a rotor gets really hot it will reach the outer limits of outward thermal expansion. After it can't grow outwards anymore it will begin to bend or what people in the brake industry call “cone”. It will bend towards the hottest side.