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Post by illbebetter on Oct 28, 2011 7:54:23 GMT -5
I'm getting ready to install new HPS pads front and rear for autocrossing. My OEM pads are still in decent shape(17k miles) and no damage to my rotors.
Do I need to have my rotors turned before bedding in the new pads, run a sanding wheel over them to clean them up, or just leave them as-is? Thanks.
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Post by czrider on Oct 28, 2011 9:26:38 GMT -5
You will need to clean the rotors with a method that will remove all the embedded material from the current pads. A light turning will do it or sanding both sides with a abrasive disc. Bed them with six 60 mph down to 30 mph slow downs with a minute in between. Don't come to a complete stop or drag the brakes. Let them completely cool before competition.
Brian Gause
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Post by cr89x on Oct 29, 2011 7:30:36 GMT -5
Hawk recommends that you clean the rotors. They say to use a mild detergent and water. I would scuff them with about 300 grit sandpaper and then wash. Hawk recommends bed in to 5 35mph to almost 0 without stopping, followed by 3 60mph to almost 0 without stopping while using only moderate brake pedal pressure, then let the car sit, without the parking brake on, until the brakes are cool to the touch.
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Post by illbebetter on Oct 29, 2011 17:16:56 GMT -5
Thanks for the help. I understand the bedding process. I was hoping to be able to skip an actual turning if it wasn't really necessary. I'm gonna give the sanding/cleaning a shot.
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Post by pistonwheels on Jan 9, 2012 11:22:31 GMT -5
I'm not in favor of turning rotors unless one is actually trying to rectify some warpage. I think its done too often by garages. But then I have weird views on cars. As well as cleaning rotors and area around seal on brake piston(s), I usually roughen new pads by rubbing them against brick wall of my house as I find that removes and helps prevent glaze.
I'm interested as to whether you are putting in harder compound (higher temp) pads. I'd be interested in whether you get better braking in an autox if so. Too often in autox harder pads don't get up to temperature fast enough and for at least first half of course are worse (imho) than good quality oem pads. (I ran HBC Green in my Suzuki for autox's).
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Post by srduck on Jan 9, 2012 11:40:58 GMT -5
I'm interested as to whether you are putting in harder compound (higher temp) pads. I'd be interested in whether you get better braking in an autox if so. Too often in autox harder pads don't get up to temperature fast enough and for at least first half of course are worse (imho) than good quality oem pads. (I ran HBC Green in my Suzuki for autox's). HPS are fine for AutoX. They're still considered street pads, so they'll operate even at lower temperatures just fine. I've been running them on my Miata and it's fine. I've actually considered moving up to HP Plus at some point.
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Post by illbebetter on Jan 9, 2012 14:06:34 GMT -5
The HPS are working well for me in both autocross and daily driving. They grab a little quicker and don't fade by the end of the longer courses. The are relatively noise free. Occasionally a get a small squeal if it's been parked a while(overnight) after a rain or cool, heavy dew night. The only downside seems to be more dust than stock. I'm gonna fix that by painting my wheels black.
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Post by srduck on Jan 9, 2012 14:10:14 GMT -5
The HPS are working well for me in both autocross and daily driving. They grab a little quicker and don't fade by the end of the longer courses. The are relatively noise free. Occasionally a get a small squeal if it's been parked a while(overnight) after a rain or cool, heavy dew night. The only downside seems to be more dust than stock. I'm gonna fix that by painting my wheels black. As someone with two sets of black wheels, allow me to add this...... It doesn't work Brake dust isn't black, it's a godawful shade of grey. You may THINK that brake dust won't show up on black wheels.... I know that's what I thought.... but trust me, it does
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Post by illbebetter on Jan 9, 2012 15:31:15 GMT -5
Maybe I should paint my wheels yellow to match the car. It's a dirt magnet do then I'd at least look the same all over.
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Post by infernoz28 on Jan 11, 2012 0:12:56 GMT -5
As far as the brake dust I would just get use to cleaning them. Find a good wheel cleaner and keep them waxed as it will make it much easier to get the brake dust off.
I have about one and a half seasons on my HP+'s along with ample street driving and have been quite pleased with them. They stop much much better than the stock replacement pads and last a lot longer. Only issue I have had is they tend to want to lock up more as they build a large amount of heat.
A course with a lot of stop and go on a really hot day they get a little tricky to drive (the car doesnt have ABS mind you) but other than that I have loved them. Only going to switch away from them because im hoping to move over to time trials and they would not survive CMP on a heavy car.
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Post by cr89x on Jan 11, 2012 5:53:52 GMT -5
Brake dust is going to happen, o well in my opinion. Wash the car and clean the wheels lol. I've discovered keep wheel clean products from armor all and eagle one, I like them. They do not repel the world so don't get it wrong, but they do make cleaning a heck of a lot easier. I haven't tried taking a dry cloth and wiping them clean yet. It would work though I'm sure.
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Post by BlkGenCoupeTy on Apr 1, 2012 9:11:25 GMT -5
Maybe I should paint my wheels yellow to match the car. It's a dirt magnet do then I'd at least look the same all over. That's why I went with the Graphite Grey by Dupli-Color wheel paint -- www.duplicolor.com/products/wheelCoating/Maybe something to consider.
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