Proper Bed In Process question

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Old 03-28-2011, 04:37 PM
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03 Type S - 153,000 miles
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Proper Bed In Process question

So I installed my new EBC slotted rotors and ebc red stuff pads last week with the 95' legend caliper.

I just did the bed in process - followed the instructions that came with the pads . 200 miles of urban driving and then bed them in 60mph to 20mph ( 5 times ).

I drove to 60 as fast as possible and then got down to 20mph as fast as i could ( without ) engaging ABS. After i did this 5 times in a row as fast as possible I drove about 10 minutes without having to use the brakes ( never came to a complete stop ) and then another 10 minutes again without having to use the brakes. I never came to a complete stop until about 20 minutes after this process..

So I did this and half of the rotor ( top half ) is a blueish/purple and the bottom half of the rotor is silver.

Do i need to do this again to have the entire rotor the same color ? There is also a couple of silver lines ( almost like small grooves )...

Any help would be appreciated. Some sites and people say 300- 500 miles and then bed in . Some people say 60mph down to 10 mph. There is a ton of information, but i want to make sure i get it done right - with my current set up.
Old 03-28-2011, 07:53 PM
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20 is a good referance speed - in the time it takes to get off the brakes and back on the throttle the speed will drop to 10,,you dont want to stop!

the pads and rotors have micro hiils and valleys that need to mate into each other
Do some more bedding !
the shiny grooves are normal- there are several hard metals in the pads,,contact under pressure will cause slight cut in the rotor- dont sweat it- means all is well

first bedding removes the excess resins in the pads
2nd time gets the parts closer mated
3rd time now we are making good contact all the way across
4th time now it stops like it should!
Old 03-28-2011, 08:05 PM
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200 miles is too short, EBC recomends closer to 1500 miles of urban driving before full bed in process. i waited about 1k miles before doing 6 or so 60-20 stops, then waited a few hundred miles did it again 2 more times, and 1k miles later did 10-12 or so 70-20 stops in over a few back roads all within a min of each other, some within 20 secs. ALL bed ins were followed by a 20 min cool down run before coming to a compete stop, dont wana make hot spots and cause warping.

also these pads will make lots of squeaking noise the first 1-2k miles, then it goes away.
Old 03-28-2011, 08:09 PM
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i also believe i had some weird discoloration during my first bed in process, these are very hard pads and rotors, so they take time to bed in. do more normal driving before you do a bed in again, do a few firm (not hard) brake runs to get some wearing action. at least 300-500 more miles of urban type driving before next bed in.
Old 03-28-2011, 09:21 PM
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I did my bed in procedure for 1000 miles.
Old 03-29-2011, 08:12 AM
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Awesome ! Thanks for all the feedback guys - I will report back around 1000 miles and let everyone know how this set up feels.
Old 03-29-2011, 01:07 PM
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I never do it before 500. 500 is plenty to cycle the heat in the rotors and to let the pads (ebc) with the break in coating to wear off.
Old 03-29-2011, 04:33 PM
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a little something from the ebc site:

7. Bedding in of EBC stainless rotors and pads
If new pads are being used, bed in time is almost DOUBLED. Compare the bedding in of both new pads and rotors as removing the peaks from two sets of mountains rather than one. In the bed in procedure light strobe-like stripes can appear on the rotor but bear in mind that these are dimensionally MICRONS and will wear down quite quickly. Even a small bed in vibration is quite normal and will go away once the bed in procedure is complete. EBC rotors are ground in a radial direction and this is why strobe stripes may appear compared to cross ground rotors where peaks are more random but bed in times are longer. There are varying opinions on bed in but EBC suggest

First we only expect EBC pads to be used, many other pads have been shown to exhibit much more aggressive braking and NO WARRANTY exists using EBC rotors with any other brand of pad, period .Proof of purchase will be required in any warranty discussion.

For street use – Medium braking force rather than LIGHT braking from 70 mph to 20 intermittently for a minimum of 100 miles of urban style driving (100 brake cycles) where braking actions occur every mile at least is recommended---
without harsh braking unless in an Emergency…. (no ABS)

This seems to work best and very LIGHT braking has been found to cause glazing and pick up problems. Pick up is described as small disc particles being dislodged from the rotor surface. If pick is observed during bed in, you CAN accelerate this with a fix by removing the pads and removing any small silver particles embedded in the pad surface ( using a pointed knife or similar tool) taking care not to damage the pad surface excessively, care needs to be taken and if needed call our help line or e mail our tech department The rotor surface will correct itself and no sanding or filing of the rotor is advisable.

There are NO silver particles at all present in any EBC pad material therefore any that become embedded in the pad are rotor material and to produce best pad and rotor surface quickly, this procedure is recommended. Without this procedure, the slots in EBC rotors WILL do the job for you but you may see slight scratch marks on the rotor during the first 1000 mile street use.
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