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post #1 of 22 (permalink) Old 11-30-2010, 10:58 PM Thread Starter
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Question Installing new Rotors

So I'm getting some drilled and slotted rotors for my 2000 Trep. It will be just the front ones.

My question is: Do the rotors need to be machined before slapping them on? I need to know if it's safe to install them myself, or if I have to get a shop to do it. If I do it myself will I get a squeal?

Also, should I get new pads to go with the rotors? I have some life left in the ones I have and would like to know if keeping them with the new rotors will produce any squeal or damage to the rotors.

Thanks in advance for the help!
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post #2 of 22 (permalink) Old 11-30-2010, 11:00 PM
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post #3 of 22 (permalink) Old 11-30-2010, 11:08 PM
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new rotors will not need to be machined before the install. in fact, most slotted and drilled rotors are non machinable. rotors are not the least bit hard to install. all depends on your comfort level when it comes to the job, the difference between you installing them and a shop installing them is not nessecarily gonna cause a sqeal. me personally, if your putting new rotors on their you may as well put a new set of pads on. that way everything will wear nice and evenly with as much stopping power as possible. try to avoid cheapy 10$ peice of crap brake pads. now those will probably sqeal

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post #4 of 22 (permalink) Old 12-01-2010, 12:29 AM
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Buy new pads! Do it yourself if you own a wrench or twelve!
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post #5 of 22 (permalink) Old 12-01-2010, 04:45 PM
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Always replace the pads when putting on new rotors

New rotors never need to be machined, just open the box, clean them up with brake cleaner and install
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post #6 of 22 (permalink) Old 12-01-2010, 05:10 PM Thread Starter
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new rotors will not need to be machined before the install. in fact, most slotted and drilled rotors are non machinable.
I was told that everytime I get new brake pads, I should resurface my rotors. Is this not true for drilled and slotted rotors? What would be the consequences of not resurfacing the rotors and getting new pads?

How long do the rotors last?
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post #7 of 22 (permalink) Old 12-01-2010, 05:12 PM Thread Starter
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i'm talking about the next time I get new pads, like a year from now
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post #8 of 22 (permalink) Old 12-01-2010, 07:26 PM
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Originally Posted by AMT0924 View Post
I was told that everytime I get new brake pads, I should resurface my rotors. Is this not true for drilled and slotted rotors? What would be the consequences of not resurfacing the rotors and getting new pads?

How long do the rotors last?
when you need pads then yes its best to machine the rotors. you dont HAVE to but its good to do. that way your pads wear as evenly as possible and prevents brake pulsation..most drilled and slotted rotors are just not meant to be machined, some can be but some cant. just replaced. rotors should be scrapped once they become to thing or they cant be cut properly
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post #9 of 22 (permalink) Old 12-02-2010, 12:14 AM Thread Starter
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So, later, when my brake pads need replacing, but my drilled/slotted rotors are still good, and I can't resurface them, what do I do? Just replace the pads? Will there be any consequences for not resurfacing the rotors and getting new pads?
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post #10 of 22 (permalink) Old 12-02-2010, 01:05 AM
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So, later, when my brake pads need replacing, but my drilled/slotted rotors are still good, and I can't resurface them, what do I do? Just replace the pads? Will there be any consequences for not resurfacing the rotors and getting new pads?
I ran through 2 and a half sets of Brakes on my original R1 Drilled and slotted rotors with any issue. And that is without cutting them. Most of the time the reason why many shops machine rotors is to get rid of warping. The other is to make a new surface for the brake pad to bed in properly with.

As said before, with new rotors just make sure you clean them. They come in bags and have a oily film on them to prevent rusting (in storage and shipping) this can effect brakign and proper breaking in.
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post #11 of 22 (permalink) Old 12-03-2010, 06:29 PM
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Also, contact the manufacturer of the rotors as to how is best to break them in. When they are actually broken in properly you are very unlikely to get warping in the future. Yes replace the pads.

Also, if you are going the extra to get nice rotors, don't waste them with $10 pads. Performance Friction pads for our cars are sold at O'reilly's are amazing. They last longer than standard pads and have better performance. Their only downside is they are a little dustier. One warning about their pads is that if you use them, you shouldn't go back to standard pads using the same rotors as they leave a residue on them.
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post #12 of 22 (permalink) Old 12-04-2010, 10:48 PM
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...As said before, with new rotors just make sure you clean them. They come in bags and have a oily film on them to prevent rusting (in storage and shipping) this can effect brakign and proper breaking in.
The rotor manufacturers say that you must clean them with soap and water - not brake parts cleaner - because there is machining dust and grit which does not release with brake parts cleaner but is soluble in soap/water (dishwashing liquid and water). It's OK to use brake parts cleaner *after* you have washed them with soap and water and dried them, but not before and not only with brake parts cleaner. Seems ironic that you wouldn't clean them with "brake parts cleaner", but that's what they say.

Also, if you ever sand a rotor, do not use aluminum oxide sandpaper - use garnet paper only. Aluminum oxide leaves a harmful, reactive residue on the rotors that can create problems. Garnet cuts metal without leaving a residue. And, again, to be safe, wash with soapy water when done.


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Last edited by peva; 12-04-2010 at 10:59 PM.
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post #13 of 22 (permalink) Old 12-05-2010, 11:56 PM
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You should always clean NEW brake rotors off with break cleaner.
They ship with a clear protective coating on them that has to be cleaned off.
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post #14 of 22 (permalink) Old 12-06-2010, 12:16 AM
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Originally Posted by clearthalane View Post
You should always clean NEW brake rotors off with break cleaner.
They ship with a clear protective coating on them that has to be cleaned off.
The manufacturers say to use soapy water for the reasons I said. Also, if you happen to buy pre-painted rotors by Raybestos and some other manufacturers, the paint will be instantly dissolved by brake parts cleaner. BTDT.

Last edited by peva; 12-06-2010 at 12:34 AM.
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post #15 of 22 (permalink) Old 12-08-2010, 03:50 PM
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Quote:
Originally Posted by AMT0924 View Post
So I'm getting some drilled and slotted rotors for my 2000 Trep. It will be just the front ones.

My question is: Do the rotors need to be machined before slapping them on? I need to know if it's safe to install them myself, or if I have to get a shop to do it. If I do it myself will I get a squeal?

Also, should I get new pads to go with the rotors? I have some life left in the ones I have and would like to know if keeping them with the new rotors will produce any squeal or damage to the rotors.

Thanks in advance for the help!
No machining when putting new rotors on. You can install the intrepid brakes yourself they are not hard at all. The rotors I got I have a squeal every once in awhile when I was just past the break in point but now they are great!! They are worlds of difference to what I had on before!! When my pads get alittle heat on them they brake soo much better! They have been also putting out very little dust.
New pads should go with new rotors at the same time. The ones you have left you can keep them on the car and run them down with the rotors you have now and/or if your rotors are done now I wouldn't use the pads again.
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