hi,
I just purchased some new Brembo Blanks and some new AEM HP brake pads for my 1990 Integra.
My current rotors are warped and my brake pads are unevenly worn (top is more worn than bottom & inside pad more worn than outside pad).
I have been reading about how you are supposed to break in rotors and pads separately, but I was wondering if I break in my rotors with my old pads, will this cause the rotors to warp (since the pads are slighly deformed, we're talkin about 1mm at most here).
I was thinking of maybe putting my new brake pads on my old warped rotors and breakin in the pads and then puttin on the new rotors and breaking in the rotors with the new (recently broken in) pads.

what are your thoughts on this?

 

put new rotors and pads on at the same time.

 

COPYIED FROM: http://www.zeckhausen.com/bedding_in_brakes.htm


From a speed of about 60mph, gently apply the brakes to slow the car down to about 45mph, then accelerate back up to 60mph and repeat. Do this about four or five times to bring the brakes up to operating temperature. This prevents you from thermally shocking the rotors and pads in the next steps.

Make a series of eight near-stops from 60 to about 10 mph. Do it HARD by pressing on the brakes firmly, just shy of locking the wheels or engaging ABS. At the end of each slowdown, immediately accelerate back to 60mph. DO NOT COME TO A COMPLETE STOP! (Note: With less aggressive street pads and/or stock brake calipers, you may need to do this fewer times. If your pedal gets soft or you feel the brakes going away, then you've done enough. Proceed to the next step.)

During this process, you must not come to a complete stop because you will transfer (imprint) pad material onto the hot rotors, which can lead to vibration, uneven braking, and could even ruin the rotors.

Depending on the pads you are using, the brakes may begin to fade slightly after the 7th or 8th near-stop. This fade will stabilize, but not completely go away until the brakes have fully cooled. A bad smell from the brakes, and even some smoke, is normal.

After the 8th near-stop, accelerate back up to speed and drive around for as long as possible without using the brakes. The brakes will need at least 10 minutes to cool down. Obviously, it's OK to use the brakes to avoid an accident, but try to minimize their use until they have cooled.

If club race pads, such as Pagid Orange or Porterfield R4, are being used, add four near-stops from 80 to 10mph. If full race pads, such as Pagid Black, are being used, add four near-stops from 100 to 10 mph.

After the break-in cycle, there should be a blue tint and a light gray film on the rotor face. The blue tint tells you the rotor has reached break-in temperature and the gray film is pad material starting to transfer onto the rotor face. This is what you are looking for. The best braking occurs when there is an even layer of of pad material deposited across the face of the rotors. This minimizes squealing, increases braking torque, and maximizes pad and rotor life.

After the first break in cycle shown above, the brakes may still not be fully broken in. A second bed-in cycle, AFTER the brakes have cooled down fully from the first cycle, may be necessary before the brakes really start to perform well. If you've just installed a big brake kit, the pedal travel may not feel as firm as you expected. After the second cycle, the pedal will become noticeably firmer.

 

so its ok to do both at the same time then? because I read on sum websites that they recommend to do it one component at a time, using the old other component to bed them. ie: old rotor to bed new pads b4 installing new rotor.

i have another question, because i am thinking maybe I am going to put in my new rotor and leave my old pads in there which still have some life left in them, since the pads are a little uneven, does this pose a danger to my rotor?

 

Let me stress this youngun....Do NOT do half of the job. Replace both at the same time (pads and rotors) or do not do it at all. I have heard about what you are saying, But I do not recomend it. By Installing new rotors with old crappy pads the first material that the rotors will new is that old tired junky pad. You dont want to do it man. Toss the old **** in the trash.

 

Like SoloSol said, replace both at the same time, after all, every car comes from the factory (when new) with new pads and new rotors, and how often do you hear of people warping rotors on brand new cars. replace both a follow the above advice for breaking both in at the same time

 

alrit, cool...thanx for ur help everyone, im gonna install it al at the same time