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2G Sanding rotors

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RidleyNoah

Proven Member
241
33
Jul 3, 2014
Redondo Beach, California
I'm installing Hawk brake pads on fairly new rotors. Rotors are in excellent shape and don't need to be turned. Hawk instructions say to sand the rotors with 150 grit sandpaper in order to remove old pad residue. Any particular sanding pattern (cross hatch)?
 
Which hawks are they, normally hawks are pretty good to just drop in and use but i believe the blues are a little different, the HPS and HP+ ive seen guys just put on and drive.

Do not use regularsand paper or emery cloth as the aluminum oxide abrasive material will permeate the cast iron surface and make the condition worse

So unless your switching to race pads you most likely will be safe to just drive on the new ones, 1 other trick is to use a good brake or wheel cleaner. Spray it on and ket it eat the other pad transfer off then wash it off and most of it comes off that way as ive found out,
 
I'm using Hawk PC (performance ceramic). Besides Hawk recommending the sanding, I also read that it helps bed in the new pads by having a rough surface.
 
I have found that a $20 HarbF orbital sander works perfect. I have never heard of aluminum oxide permeating cast iron. The biggest issue is a "glazed" or smooth rotor with new pads... I like a non shiney rotor to bed new pads.
 
Its not so much it absortbs it but it sticks to the surface, it creates harsh spots and can ruin the rotor from scoring and can get jammed in the pad and breap material off. Alu oxide is oretty harsh stuff and its what is used in blasting cabnets so is pretty harsh, its only a warning about it and precaution
 
I was planning on using 150 grit wet and dry. I was going to use it dry with a sanding block and then clean the rotors with brake parts cleaner. Is wet and dry aluminum oxide?
 
Going to go with bjones18 on this - Ingersoll die grinder with Rollock ScotchBrite pads - not even 30 secs/rotor I don't think.

Automation is your friend.
 
You guys convinced me, I guess I'll be hitting up HF. Thanks!
 
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