Cross Drilled & Slotted Rotors - Mustang Evolution

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Old 03-01-2011, 01:03 PM   #1
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Cross Drilled & Slotted Rotors

I installed OEM spec cross drilled and slotted rotors on the front. I put new brake pads as well. Doesn't feel right. I'm not so sure about the correct direction of the rotor. I think this is dependent on the position of the caliper. I've looked it up and found some contradicting photos led me to think photoshop or something. Can someone post something on this? I think I need to bleed the brake lines, input?
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Old 03-01-2011, 02:07 PM   #2
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Re: Cross Drilled & Slotted Rotors

most rotors have L and R on them to make sure you put them on the right side, did you see this? I think the slots to like this for drivers side looking at the wheel straight on "\" not what you would normally think~

Its always good to bleed the brakes now and again as water gets into it over time
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Old 03-01-2011, 02:10 PM   #3
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Re: Cross Drilled & Slotted Rotors

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most rotors have L and R on them to make sure you put them on the right side, did you see this? I think the slots to like this for drivers side looking at the wheel straight on "\" not what you would normally think~

Its always good to bleed the brakes now and again as water gets into it over time
Yeah they didn't have and L and R ...wouldn't be asking. A more technical answer? Also, a guide perhaps on bleeding the brakes?
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Old 03-01-2011, 03:00 PM   #4
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Did you change calipers or take the brake lines loose at any time?
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Old 03-01-2011, 03:23 PM   #5
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Re: Cross Drilled & Slotted Rotors

I kept the original calipers. I was careful to not stretch, damage or disconnect the brake line hoses. I hung the caliper. This is my first brake job and has had two other prior in its history. I bought a bleeder pump kit and the handle went loose of its hinge so I haven't completed the bleeding of brake lines properly.
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Old 03-01-2011, 04:31 PM   #6
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I kept the original calipers. I was careful to not stretch, damage or disconnect the brake line hoses. I hung the caliper. This is my first brake job and has had two other prior in its history. I bought a bleeder pump kit and the handle went loose of its hinge so I haven't completed the bleeding of brake lines properly.
I've done a little searching and can't get a definite answer on rotor direction. Brake bleeding process is not bad. Never had any luck with a pump bleeder. I just get someone to pump brakes for me. Pump the brake pedal a few times and hold it to the floor. Crack the bleeder while someone is holding constant pressure on the pedal. When fluid stops coming out, close the bleeder. Dont let the pedal up until the bleeder is closed. Then pump the pedal again and repeat. You should do each caliper until you have no more air bubbles coming out of the bleeder. Make sure to top off the master cylinder a few times. Don't let it go dry. I'm done typing for now. iPhone typing sucks.
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Old 03-01-2011, 05:44 PM   #7
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Red face Re: Cross Drilled & Slotted Rotors

Not the greatest pictures but I hoped that maybe the angle of the holes and slots would indicate something helpful.
I apologize if not and good luck with it. Wish I could help more.
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Old 03-01-2011, 06:37 PM   #8
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Not the greatest pictures but I hoped that maybe the angle of the holes and slots would indicate something helpful.
I apologize if not and good luck with it. Wish I could help more.
Mine are the opposite of that. I went to a lot of sites and some were like yours and some like mine. Do yours have a left or right stamped on them?
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Old 03-01-2011, 11:21 PM   #9
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Re: Cross Drilled & Slotted Rotors

I have cross drilled blotted rotors. Check my photos in my profile. Pretty sure I havea picture of the install. This is the way the shoild run.
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Old 03-01-2011, 11:50 PM   #10
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I have cross drilled blotted rotors. Check my photos in my profile. Pretty sure I havea picture of the install. This is the way the shoild run.
Did yours have a left and right stamp on them? Might have to swap mine.
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Old 03-02-2011, 01:52 PM   #11
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Re: Cross Drilled & Slotted Rotors

You see what I mean. What makes sense to me is that the region of the slot closest to the center should come in contact with the brake pad first as it rotates. This way the heat is carried away from the center.
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Old 03-02-2011, 01:56 PM   #12
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You see what I mean. What makes sense to me is that the region of the slot closest to the center should come in contact with the brake pad first as it rotates. This way the heat is carried away from the center.
According to bear brake system website. That is correct. Which means my **** is backwards. But it stops great though.
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Old 03-02-2011, 02:04 PM   #13
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Ok I feel better. I went look at mine. My rotors have angled slots and not the curved ones. Bear says the curved type go the direction you talked about before. If you have the same style as the illustration, then they go this was. If the vanes are curved they go opposite. Hope this helps.
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Old 03-02-2011, 02:18 PM   #14
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Re: Cross Drilled & Slotted Rotors

thats how I was thinking they went, just found it hard to describe
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Old 03-02-2011, 02:29 PM   #15
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thats how I was thinking they went, just found it hard to describe
I Did not realize that curved slots and straight slots make a difference.
Hey Villa, did you have any luck with bleeding your brakes.
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Old 03-02-2011, 05:02 PM   #16
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Re: Cross Drilled & Slotted Rotors

Here are the Baers on my 'vette. This is the front left (driver's).

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Old 03-02-2011, 05:05 PM   #17
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Here are the Baers on my 'vette. This is the front left (driver's).
Yep. Angled instead of curved slots.
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Old 03-03-2011, 02:20 PM   #18
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Re: Cross Drilled & Slotted Rotors

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Here are the Baers on my 'vette. This is the front left (driver's).

Who said that the right way? Logically, doesn't seem right to me. It looks as if when in motion the outter part of the rotor will come in contact with the brake pad first. This heat will be channeled towards the center of the rotor according to your picture. I was pretty sure someone on this forum would be all over this, but it seems like I its wishy washy. Anyone know for sure???
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Old 03-03-2011, 02:29 PM   #19
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Re: Cross Drilled & Slotted Rotors

driver side on my 04 mustang. my cross drilled/slotted rotors were made by summit racing. my boxes were labeled

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Old 03-03-2011, 02:32 PM   #20
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The curved slots are made to vent heat. The angled straight slots are for stopping power.
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Old 03-03-2011, 03:04 PM   #21
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Re: Cross Drilled & Slotted Rotors

thats some pretty good info guys. And just a remind...don't if your bleeding your brakes make sure you don't get that **** on any painted surface or your effed lol
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Old 03-03-2011, 05:24 PM   #22
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Re: Cross Drilled & Slotted Rotors

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Who said that the right way? Logically, doesn't seem right to me. It looks as if when in motion the outter part of the rotor will come in contact with the brake pad first. This heat will be channeled towards the center of the rotor according to your picture. I was pretty sure someone on this forum would be all over this, but it seems like I its wishy washy. Anyone know for sure???
That's the way that Baer marked them, and it matched the diagrams in their instructions. I'm pretty sure the engineers, there, know a lot more about brakes, than I do. That was good enough for me.
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Old 03-03-2011, 06:31 PM   #23
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Re: Cross Drilled & Slotted Rotors

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driver side on my 04 mustang. my cross drilled/slotted rotors were made by summit racing. my boxes were labeled

That seems right. So I guess angled is opposite of what curved? Didn't know that the direction was different one from the other.
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