[K-MAN]

I am looking for some advice on rotors. I have the AP J Hooks now however they were warped in (3) 25 minute sessions for a track day.

I am now looking for something comparable in price as well as having it last longer than this set. I also have the Endless MX-72 pads with about 500 miles on the entire setup. Thanks in advance.

Correction to the above post. AP J Hook rotors were not warped. The Endless MX-72 pads left deposits on them and this was the cause. This is why I love this forum over talking to (CAR GUYS that know it all). AP is a great rotor and everyone on the forum has said no way did these warp in 3 sessions. Just want to set the record straight. Thanks again to Stillen!!!!

 

[Miata_mx5]

I do not think the rotors are warped....

What track was it?

 

[K-MAN]

PBIR was the track. Thoughts?

 

[Goonthree]

Have your mechanic put a runout gauge on it and measure it. I am sure Nissan has a specification for runout for their rotors.

 

[K-MAN]

OK, so I wanted to update this as I just came back from my Mechanic. After getting some feedback from some folks it looked like the MX-72 pads left some deposits on the rotors and that is what was making it shake. I have posted (Dirty Rotor) as a picture. We then took a Brillo Pad and brake cleaner and sprayed the rotor down and scrub the thing until we were exhausted! Oh just an FYI for the NOOBS (Like me) you have a back side of the rotor as well! LOL. Here is the picture of the clean rotor.

We are looking at getting some Blue Hawk pads as they are more for racing and also clean the pad when it's cold.

Thanks to Miata_Mx5/Goonthree and most of all Jim Hodgman at Stillen for talking with us.

Godzilla lives again to race!

 

[descartesfool]

Don't buy Hawk Blues. Very old brake pad technology. Rotor grinders when cold. If brake pad dust gets wet, it will leave rust almost impossible to remove on your wheels.

Buy a modern track pad: http://www.nagtroc.o...ports-oct-2011/

And don't forget to bed your brakes each time you go to the track.

Watch these two videos: http://www.essexparts.com/learning-center/Bed-in

and http://www.essexparts.com/learning-center/swapping_pads

 

[shawnhayes]

Don't buy Hawk Blues. Very old brake pad technology. Rotor grinders when cold. If brake pad dust gets wet, it will leave rust almost impossible to remove on your wheels.

They do function well as a portable brake lathe, though. Take them off when you're done cleaning the rotors.

Shawn

 

[thebishman]

Do a search on the forum for bedding in new pads and rotors. Your AP J-Hooks look perfect.
Bish

 

[Radguy]

Don't buy Hawk Blues. Very old brake pad technology. Rotor grinders when cold. If brake pad dust gets wet, it will leave rust almost impossible to remove on your wheels.

From what I've read, not only that, if the dust gets on your painted bodywork and left there to get wet, it will also stain.

I used a set to remove pad deposit off the front Brembo rotors of my Z06. I made sure the roads were bone dry before I used them. As soon as I was done, I immediately washed the wheels and the rest of the car with soap and water. The brake dust was mixed with the rinsed water and it settled on a spot on my paved driveway. Eventually the water evaporated leaving a golden yellow brake dust stain. That stain took months to eventually fade away. I shudder to think of what it would have done to the wheels and bodywork if left there. Be careful if you use them!

 

[MrJimi]

are the mx72's known for leaving those deposits , I am in the market now for a good street pad and rotor setup

 

[Goodwood]

For street use, MX72s should be fine. You're never going to generate the kind of heat you'd see at the track.For track, if you're going fast, not so good. I also got some nasty deposits on my AP rotors from getting them too hot at the track.

 

[Cicio]

Those MX72s have to be RAILED ON to get bedded in...that may have been your problem from the start...we have had that happen to a couple customers cars that wanted to do their own bedding.

just a thought.

~Cicio

 

[roketman]

Get the Carbotech pads.You can now get racing compound 20 for the fronts.You can also get them gassed (pre bedded)
These pads are awesome ,I use them now on all my cars.