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OK to bedd with new pads & new rotors?

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Old Mar 5, 2003 | 08:48 AM
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Default OK to bedd with new pads & new rotors?

I'll be picking up a set of rotors&pads. Is it ok to follow the same bedding procedure when both new parts are installed?

Or should I install my new pads(hawk hp+) on my stock rotors, perform bedding. Then switch out to my new slotted rotors? Then perform breakin again.

thanks!
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Old Mar 5, 2003 | 08:53 AM
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Default Re: OK to bedd with new pads & new rotors? (99_SH)

bed in on new rotors, be sure to set both on <FONT COLOR="orange">:fire:</FONT>
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Old Mar 5, 2003 | 09:03 AM
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Default Re: OK to bedd with new pads & new rotors? (99_SH)

Probably ok, but I personally bed New Pads on old rotors first, as long as the rotors are not warped badly or have deep grooves in them.
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Old Mar 5, 2003 | 09:10 AM
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Default Re: OK to bedd with new pads & new rotors? (XR4racer)

They at least used to say not to heat cycle new rotors and new pads at the same time as there may be improper material transfer issues. Maybe there are folks with more recent knowledge that can update that.
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Old Mar 5, 2003 | 09:13 AM
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Default Re: OK to bedd with new pads & new rotors? (CRX Lee)

I did this (new pads + new rotors) twice last year and didnt notice a difference between bedding in new pads + new rotors over new pads + old rotors and old pads + new rotors.
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Old Mar 5, 2003 | 09:29 AM
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Default Re: OK to bedd with new pads & new rotors? (.RJ)

I have noticed some new pads that come "pre-burnished" and they say this does not require normal bedding in. Don't know how common this is or how it effects the new rotor/new pad issue.
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Old Mar 5, 2003 | 09:58 AM
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Default Re: OK to bedd with new pads & new rotors? (CRX Lee)

I prefer to do the old rotor/new pad or new rotor/old pad route. You don't have to be as gentle for bedding & it takes much less time for it to be effective.

Beginning of this season, I overhauled the brake system. New MC/remanned front calipers/front rotors & pads all around. I bedded in new Hawk Blues with new Brembo blanks on the front. (I bought the rotors before Andie started selling rotors). I did the 6 low speed brakes before loading up on the trailer. Finished off @ the track doing HPDE, not racing. (The express reason for us to be there that day was to bed in the various brake components, heat cycle tires & test the new rear swaybar.) Let sit for about 15 min after & all is good. Point being, it can be done. You do have to be more careful. Until there is material transfer & the rotor/pad are 'mated', there are basically no brakes (comparitively speaking).
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Old Mar 5, 2003 | 12:04 PM
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Default Re: OK to bedd with new pads & new rotors? (.RJ)

I did this (new pads + new rotors) twice last year and didnt notice a difference between bedding in new pads + new rotors over new pads + old rotors and old pads + new rotors.
I concur with RJ. I've done at one point or another all possible combination and I cannot tell a difference in performance. And it makes little sense to bed rotors in with one type of pad and have your new pads be something completely different.

If this is for track use, you need to season the rotors a bit before you go on track, otherwise you'll likely get some small heat cracking fairly quickly. I think Baer has a good write up on their site, I'll see if I can find it...
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Old Mar 5, 2003 | 12:08 PM
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Default Re: OK to bedd with new pads & new rotors? (MaddMatt)

one of my racer friends bakes his rotors in the oven at 600 degrees for a few hours, until they turn a bronze-ish color. He says it helps the heat cracking - i was thinking of giving this a try this year.
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Old Mar 5, 2003 | 12:09 PM
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Default Re: OK to bedd with new pads & new rotors? (MaddMatt)

I personally like to take the time to get to know them before I get in bed with them.
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Old Mar 5, 2003 | 12:11 PM
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Default Re: OK to bedd with new pads & new rotors? (.RJ)

http://www.baer.com/Support/TechTips.aspx?TechTipID=4
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Old Mar 5, 2003 | 01:27 PM
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Default Re: OK to bedd with new pads & new rotors? (MaddMatt)

http://www.baer.com/Support/TechTips.aspx?TechTipID=7 Bear says
Note: Never “Bed” pads on rotors which have not first been “Seasoned”. Always allow a substantial coast down zone when bedding pads that will allow you to safely drive the car to a stop in the event of fade. Never Drag the Brakes.




[Modified by PhucNguyen57, 2:28 PM 3/5/2003]
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Old Mar 5, 2003 | 01:52 PM
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Default Re: OK to bedd with new pads & new rotors? (PhucNguyen57)

Damn. I was JUST about to ask the same question. So, what's everyones take?

New (machined rotor) + old pad = good

and, then, after putting some heat in the new/machined rotor bed in the new pads?
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Old Mar 5, 2003 | 02:01 PM
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Default Re: OK to bedd with new pads & new rotors? (bb6h22a)

new pads + new rotors works just fine. Just bed in carefully and allow time for cool down. I had to bed in my XP's twice. *shrug*
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Old Mar 5, 2003 | 03:53 PM
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Default Re: OK to bedd with new pads & new rotors? (.RJ)

I bedded in new pads with new rotors for a track event and I had no problems with either one of them thusfar. It has been over 2 months.
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Old Mar 5, 2003 | 07:06 PM
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Default Re: OK to bedd with new pads & new rotors? (99_SH)

I say just to be safe, use the new pads with the old rotors. Then change the rotors after the pads have been bedded properly. It only takes maybe 30 minutes more time. Its no big deal. You can still finish the whole brake job in 1 day. Better safe then sorry
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