Rather than waste your time quoting part specs or operating temps I will tell you what works for me.

Stock rotors, stock Akebono calipers, Castrol SRF, 3 inch brake ducts, CarboTech XP10’s all around, and stainless steel lines. This combination has worked flawlessly for me on Hoosiers at Summit Point Main and VIR.

http://www.the370z.com/members/resip...710-duct-9.jpg

It's not the absolute value I care about, I just want to know if it works. I question how effective it really is

600 degrees is not that hot for a track day.

after a cool down lap.

Thats why I said the ducts might not have work that well

I don't know of that was directed at me or him, my comment was to him because it seems like he didn't READ the thread, lol

I am just saying 600f with the duct installed, I suspect the duct don't do as much as they say

With no ducts I had the calipers at around 700 after a cooldown lap with my crappy IR thermometer.

That's helpful , so maybe it isn't completely pointless, but the stillen kit isn't a world saver

I routinely see 600

this thread would be helpful with more data so we can compare cars at the same track with different setups... spohn and i will both be at RA in a month, so we can take some measurements there... and maybe VIR after that

on a qualitative note, I would say that my car has never had an issue with motul 600 - after adding 3" ducts with naca inlets in front and SRD made plates that direct air to eye of rotor... I suspect one of the critical dimensions is the direction of airflow against the rotor (needs to be as much towards center as possible) with minimal gap between plates and rotor.

You are not going to be able to get any absolute data as there are just too many variables, from drive to weather to track to cars to even equipment. I just want to see if there are ballpark figures that we can compare. I should have recorded more data when my car was original, but I got lazy and this is what I get. Oh well

Cossie, you are on full stock trim/weight, stock power, and RS3 tires? I think it'll be great to keep those in perspective when others add in with their data as well.

I'll be at RA March 15+16 with NASA

Yeah that's why I asked. I just want to know what is normal and what isn't. I am not a nasa engineer, I don't need absolute data, ballpark is fine. I am getting better at data collection that I can see how things are happening without video and sound