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!
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!
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.
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 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.
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).
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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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.
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...
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.
http://www.baer.com/Support/TechTips.aspx?TechTipID=7 Bear says
[Modified by PhucNguyen57, 2:28 PM 3/5/2003]
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]
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?
New (machined rotor) + old pad = good
and, then, after putting some heat in the new/machined rotor bed in the new pads?
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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