Bedding in Carbotech pads with Used Rotors

SPOHN · 10-23-2011, 11:37 AM

I just picked up some Carbotech pads and I want to install them tomorrow. But Carbotech instructions say if you used a different pad on your current rotors that you should replace or resurface your current rotor. Well I have slotted rotors so they can't be resurfaced. What should I do? I have some Stillen J-Hooked rotors but don't want to use them yet. My current rotors only have 3K miles on them with plenty of life. Does it really make a big difference if the rotors are not resurfaced?

KaienZ34 · 10-23-2011, 12:29 PM

I'm not sure, i just know i HATE bedding in brakes.

gpa7pk · 10-23-2011, 01:25 PM

I was running HPS pads on my slotted rotors and then switched to the XP 10/8's. I opted for the Carbotech pre-bedding service and then went through the regular bedding in process for "insurance". I now have awesome brakes and feel very comfortable at Texas World Speedway Track.

cossie1600 · 10-23-2011, 01:34 PM

Don't worry too much about it, just make sure you bed them in like they say. Else you will be wondering where your brake pedal is on your first session at the track

Nikon FM · 10-23-2011, 01:35 PM

Aren't there instructions regarding used/non turned rotors too? I had 12/10s and I recall some wording about non-turned rotors….albeit turning before bedding in showed as the priority in the instructions.

SPOHN · 10-23-2011, 02:03 PM

Quote:

Originally Posted by gpa7pk

I was running HPS pads on my slotted rotors and then switched to the XP 10/8's. I opted for the Carbotech pre-bedding service and then went through the regular bedding in process for "insurance". I now have awesome brakes and feel very comfortable at Texas World Speedway Track.

Quote:

Originally Posted by cossie1600

Don't worry too much about it, just make sure you bed them in like they say. Else you will be wondering where your brake pedal is on your first session at the track

Sounds good

Quote:

Originally Posted by Nikon FM

Aren't there instructions regarding used/non turned rotors too? I had 12/10s and I recall some wording about non-turned rotors….albeit turning before bedding in showed as the priority in the instructions.

Maybe on there site but not on the set of directions I have

Red__Zed · 10-23-2011, 02:05 PM

carbotech will stick to their story that you shouldn't use rotors that have been run previously with their pads. I know people that have done it with no issue, just cleaned up the rotors and went to it....don't know that I'd risk it.

Baer383 · 10-23-2011, 03:13 PM

You can scuff up the surface with a 90deg die grinder with a 50 grit roloc disc then break clean it when finished and bed them as if the rotors are new.

takjak2 · 10-23-2011, 03:34 PM

I was just asking about this before I made it to this thread. Hoping to swap between Carbotech and OEM pads without messing with rotors constantly.

cossie1600 · 10-23-2011, 06:04 PM

It would be great to have new rotors for every new pads, but then it's also nice to have a fresh set of slicks for every track session. You will be fine, don't worry about it. I swapped my pads way too many times this year (so have others), you will be fine at the non professional level.

Oh yeah, I bought a 50 or 100 pack sandpaper. It's the special 80 grit one that one of the forum member recommded. Let me know if you want a few, I have a whole stack of them and they are taking up space. I have to check exactly what they are.

sig11 · 10-24-2011, 10:08 AM

Quote:

Originally Posted by cossie1600

Don't worry too much about it, just make sure you bed them in like they say. Else you will be wondering where your brake pedal is on your first session at the track

Anything other than Bobcats say to bed on the track. :P

cossie1600 · 10-24-2011, 12:10 PM

Oh yeah, I had my car shipped to a private air strip. I then did a few 130-40 to bed in my XP10. I chickened out on the XP8 and didn't quite get up to speed for a full bleed, I ended up not having my brakes in my first session at the track. Plus I got some deposits on the rotors as a result.

A former race car driver told me that bedding in pads is super important. If you screw it up, the pads are basically junked. You just need to get the pad to bond perfectly at the first heat cycle. The whole rotor/pad mating thing is secondary

370Ztune · 10-24-2011, 12:38 PM

Easiest way to do it is run the pads on the street hard enough to scrape material, but not hard enough to get them hot enough for bedding to begin.

Basically do a hard stop, then drive normally for awhile until everything completely cools down and do another somewhat hard stop. This should scrape the old material off as Carbotechs are generally abrasive under "cold" usage.

Then you can go about bedding them in normally with multiple hard stops within short periods of time.

SPOHN · 10-24-2011, 04:58 PM

^ this is what I did today. They seem perfect IMO. Did several 120 to 30 stops. These pads ate so bad a$$. I see why Cossie hated on the HP. Far surperior. I did like my HP+ though. But I have a new love now.

corner3garage · 10-24-2011, 05:10 PM

We always recommend resurfacing or replacing the rotor, but we know many customers that have not and they sometimes end up with some rotor warpage.

10-23-2011, 11:37 AM	#1 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 45 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	Bedding in Carbotech pads with Used Rotors I just picked up some Carbotech pads and I want to install them tomorrow. But Carbotech instructions say if you used a different pad on your current rotors that you should replace or resurface your current rotor. Well I have slotted rotors so they can't be resurfaced. What should I do? I have some Stillen J-Hooked rotors but don't want to use them yet. My current rotors only have 3K miles on them with plenty of life. Does it really make a big difference if the rotors are not resurfaced? __________________ Last edited by SPOHN; 10-23-2011 at 12:52 PM.

10-23-2011, 12:29 PM	#2 (permalink)
KaienZ34 A True Z Fanatic Join Date: Oct 2009 Location: LA. not L.a. Posts: 21,652 Drives: Z34 Tour/Sport Rep Power: 177	I'm not sure, i just know i HATE bedding in brakes. __________________ *"These Violent Delights Have Violent Ends"* http://www.the370z.com/members/kaienz34-albums-z34.html

10-23-2011, 01:35 PM	#5 (permalink)
Nikon FM Track Member Join Date: Jan 2009 Location: Snoqualmie WA Posts: 973 Drives: 03 996TT Porsche Rep Power: 606	Aren't there instructions regarding used/non turned rotors too? I had 12/10s and I recall some wording about non-turned rotors….albeit turning before bedding in showed as the priority in the instructions. __________________ Buddy Revell: "One man's sooner is another man's later"

10-23-2011, 03:13 PM	#8 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 29	You can scuff up the surface with a 90deg die grinder with a 50 grit roloc disc then break clean it when finished and bed them as if the rotors are new. __________________ 2013 ZL1 754 rwhp 747 rwtq

10-23-2011, 03:34 PM	#9 (permalink)
takjak2 A True Z Fanatic Join Date: Feb 2011 Location: Sterling, VA Posts: 1,922 Drives: Legit Racecar 370Z Rep Power: 142	I was just asking about this before I made it to this thread. Hoping to swap between Carbotech and OEM pads without messing with rotors constantly. __________________ Mods \| Stuff \| Things \| Seat Time \| Nismo facebook.com/TeamSparrowSpeed Last edited by takjak2; 10-23-2011 at 03:36 PM.

10-23-2011, 01:25 PM	#3 (permalink)
gpa7pk Base Member Join Date: Apr 2009 Location: Texas Posts: 135 Drives: 1959 Triumph TR3A Rep Power: 16	I was running HPS pads on my slotted rotors and then switched to the XP 10/8's. I opted for the Carbotech pre-bedding service and then went through the regular bedding in process for "insurance". I now have awesome brakes and feel very comfortable at Texas World Speedway Track.

10-23-2011, 01:34 PM	#4 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	Don't worry too much about it, just make sure you bed them in like they say. Else you will be wondering where your brake pedal is on your first session at the track

10-23-2011, 02:05 PM	#7 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 119	carbotech will stick to their story that you shouldn't use rotors that have been run previously with their pads. I know people that have done it with no issue, just cleaned up the rotors and went to it....don't know that I'd risk it.

10-23-2011, 06:04 PM	#10 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	It would be great to have new rotors for every new pads, but then it's also nice to have a fresh set of slicks for every track session. You will be fine, don't worry about it. I swapped my pads way too many times this year (so have others), you will be fine at the non professional level. Oh yeah, I bought a 50 or 100 pack sandpaper. It's the special 80 grit one that one of the forum member recommded. Let me know if you want a few, I have a whole stack of them and they are taking up space. I have to check exactly what they are.

10-24-2011, 12:10 PM	#12 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 29	Oh yeah, I had my car shipped to a private air strip. I then did a few 130-40 to bed in my XP10. I chickened out on the XP8 and didn't quite get up to speed for a full bleed, I ended up not having my brakes in my first session at the track. Plus I got some deposits on the rotors as a result. A former race car driver told me that bedding in pads is super important. If you screw it up, the pads are basically junked. You just need to get the pad to bond perfectly at the first heat cycle. The whole rotor/pad mating thing is secondary

10-24-2011, 12:38 PM	#13 (permalink)
370Ztune The370Z.com Sponsor Join Date: Jan 2009 Location: Los Angeles, CA Posts: 2,477 Drives: Z34 370Z Rep Power: 46	Easiest way to do it is run the pads on the street hard enough to scrape material, but not hard enough to get them hot enough for bedding to begin. Basically do a hard stop, then drive normally for awhile until everything completely cools down and do another somewhat hard stop. This should scrape the old material off as Carbotechs are generally abrasive under "cold" usage. Then you can go about bedding them in normally with multiple hard stops within short periods of time. __________________ The Real JDM Facebook Bulletproof Instagram

10-24-2011, 04:58 PM	#14 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 45 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	^ this is what I did today. They seem perfect IMO. Did several 120 to 30 stops. These pads ate so bad a$$. I see why Cossie hated on the HP. Far surperior. I did like my HP+ though. But I have a new love now. __________________

10-24-2011, 05:10 PM	#15 (permalink)
corner3garage The370Z.com Sponsor Join Date: Oct 2009 Location: Laguna Hills, CA Posts: 9,879 Drives: 240sx, 350z, 370z Rep Power: 34	We always recommend resurfacing or replacing the rotor, but we know many customers that have not and they sometimes end up with some rotor warpage. __________________ Corner3motorsports.com

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