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Rotora Drilled Slotted or just Slotted Rotors?

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Old 06-03-2010, 03:39 PM
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Rotora Drilled Slotted or just Slotted Rotors?

I am about to order my new Rotora rotors and pads but still thinking if i should go with just slotted rotors or drilled and slotted. would there be more noise from the drilled ones while cruising on the highway... ? and do they wear the pads out quicker?

I like the looks of drilled and slotted better and it would be just 55 dollars more for the setup of drilled and slotted.

whats your take on it ?
Old 06-03-2010, 03:44 PM
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then go with drilled and slotted

/thread
Old 06-03-2010, 10:00 PM
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i have the rotora drilled and slotted. They indeed look nice. My only beef with them is that sometimes, not all the time, when starting my car after its been off a while (a few hours) the brakes squeal the first couple of times i hit the brakes. so sometimes i will just hit the brakes a couple times when coming out my driveway to make it go away. i suppose rust builds up easier on these?
Old 06-04-2010, 07:41 AM
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more surface area with each hole for rust to gather on overnight- a few stops takes care or it
Yes drilled will make more wind noise driving and take a microscopic bit more pad off with each use
But do you care? If you get 25kmiles from pads is that good enough -considering how well it stops?

I prefer slotted only for normal use--most drivers will never need even the extra venting for hot pad outgassing to escape thru the slots, but its good to have

drilled is good if you autocross race, live where it rains heavily and water soaks the brakes while driving, or commute down a mountain or volcano where repeated hard use of brakes will occur and quick recovery is needed
Then the holes do provide extra cooling -a good thing in those conditions

If you want bling- buy it !!!
and accept what goes with high performance parts..fun!!! and parts wearout
Old 06-04-2010, 08:22 AM
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i would recommend slotted only.
Old 06-05-2010, 04:08 AM
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I like both and have both
Old 06-06-2010, 07:02 PM
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If all you want to do is chew up your pads faster and have weaker rotors after time go ahead and get the drilled ones.

Look at any quality race setup and 9/10 times its slotted only.


Nuff said


And actually slotted and "dimpled" is a great way to go but not many places are doing it yet.
Old 06-06-2010, 07:15 PM
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....Do you really think OP is on the same caliber as a track/race car?
Do cross(dimpled)/slotted. It looks badass.
Old 06-06-2010, 07:42 PM
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Stick with the Slotted.
Old 06-07-2010, 12:49 AM
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Slotted is plenty for street use.
Old 06-09-2010, 12:03 AM
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nuff said.
Old 06-09-2010, 12:06 AM
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Originally Posted by brian6speed
i would recommend slotted only.
Originally Posted by SpiderX1016
Stick with the Slotted.
Originally Posted by NAiL05
Slotted is plenty for street use.
Old 06-09-2010, 02:21 AM
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Princely, do you not see that photo?
Old 06-09-2010, 09:47 AM
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go with what you prefer. Personally I have slotted rotors on my TL.
Old 06-09-2010, 02:52 PM
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I went with the slotted drilled setup even before ive seen that picture, now im just happy about it but then again wish i had a bbk cant have it all i guess.
Old 06-09-2010, 03:00 PM
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Yeah; when my OEM rotors warped, I went with crossed/slotted and love them. Get compliments on them all the time.
Old 06-09-2010, 07:34 PM
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Originally Posted by vill0169
If all you want to do is chew up your pads faster and have weaker rotors after time go ahead and get the drilled ones.

Look at any quality race setup and 9/10 times its slotted only.


Nuff said


And actually slotted and "dimpled" is a great way to go but not many places are doing it yet.
I was going to stay out of this because I've already written a novel on drilled rotors but I have to say something.

I've done my own research and even paid for the white paper on this subject.

Drilled does not eat up rotors any faster under normal and semi-hot conditions. Only once the brakes are race track hot do the holes make the pads wear quicker.

Drilling does not make the rotor weaker when done right. Rotora is a quality rotor and there will be no issues.

Drilling does help the rotor to run cooler.

Drilling does stop pad glazing even better than slots.

Drilling lightens rotors.

Drilling helps a lot in rainy conditions.

Drilling has a much, much more consistent pedal pressure and feel from cold to very hot.

Drilling does not make noise unless the brakes are applied. Mine are silent under normal around town braking but under hard braking it does make a humming sound.

So if you're buying cheap rotors, stick with slotted. If you're buying quality rotors, go with the drilled. You may not need them but you can never have too much brake.

One of the best things you can do once you're in there, especially if you have drilled rotors is to remove the sheet metal backing plate. This dropped my front rotor temps by over 100 degrees.

When you get into a full race setup you start seeing more blank rotors but that's largely due to the exotic materials used.
Old 06-09-2010, 09:21 PM
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^^^ /thread
Old 06-09-2010, 10:25 PM
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After reading I Hate Car's thread about the different kind of rotor set ups. I ended up getting Rotora drilled and slotted with their H2 pads and I'm pretty pleased.
Old 06-10-2010, 12:54 AM
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So, why do people need brake upgrades for this car anyway.

All for looks or what?
Old 06-10-2010, 01:49 AM
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Originally Posted by SpiderX1016
So, why do people need brake upgrades for this car anyway.

All for looks or what?
Originally Posted by I hate cars
You may not need them but you can never have too much brake.
For me, I needed replacement rotors/pads. Why not upgrade a little?
Plus it looks 10x better
Old 06-10-2010, 02:05 AM
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Originally Posted by Souljah
For me, I needed replacement rotors/pads. Why not upgrade a little?
Plus it looks 10x better
Let me rephrase that, I don't get why people spend $1,000+ on big brake kits if they don't race it.
May or may not apply to TLs but I see it on other cars with $2-3k Porsche brakes.
Old 06-10-2010, 08:08 PM
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Originally Posted by lilsid112
After reading I Hate Car's thread about the different kind of rotor set ups. I ended up getting Rotora drilled and slotted with their H2 pads and I'm pretty pleased.
Do you have any before/after pics?
Old 06-10-2010, 09:05 PM
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Originally Posted by SpiderX1016
Let me rephrase that, I don't get why people spend $1,000+ on big brake kits if they don't race it.
May or may not apply to TLs but I see it on other cars with $2-3k Porsche brakes.
I agree with you. I ran into fade and the constant warping of the stock Acura rotors but mine gets tracked. I wanted brakes that could take everything I could throw at them. Most people get them for looks. I don't get spending that kind of money to look the part but I guess to each his own. Personally I try and keep mine stock looking. I even painted my calipers black to hide them but the paint didn't want to stick to the Rotora paint so I stripped it back to the blue. You won't see this too many times, BBK under stock rims but at least it almost looks stock lol...

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Old 06-10-2010, 09:37 PM
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Originally Posted by rnc_forever
Do you have any before/after pics?
I can snap a couple of pics when I go home this weekend. I dont have a bbk kit, just stock replacements btw.
Old 06-11-2010, 12:54 PM
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Typically, we have found that the two rotors function very similarly. It really comes down to aesthetics. The drilled and slotted have a nicer appearance.

Of course it's important you choose a company that drills the rotors properly. If you choose a cheap company who doesn't do the drilling properly or a company that uses cheap material then you will have issues.
Old 06-11-2010, 01:19 PM
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Originally Posted by Excelerate
Typically, we have found that the two rotors function very similarly. It really comes down to aesthetics. The drilled and slotted have a nicer appearance.

Of course it's important you choose a company that drills the rotors properly. If you choose a cheap company who doesn't do the drilling properly or a company that uses cheap material then you will have issues.
I've got the white paper researched by GM on the effects of drilling. They offer more than aesthetics. I was against them before. I figured the loss of mass would override any cooling benefits of the extra surface area but I was wrong. As long as they're done right, preferably cast with the rotor reliability will be fine. One interesting thing the paper said is that ALL crossdrilled rotors will one day develop cracks at the holes. The good ones just happen to wear out long before the cracks develop.
Old 06-12-2010, 02:26 PM
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Originally Posted by I hate cars
I've got the white paper researched by GM on the effects of drilling. They offer more than aesthetics. I was against them before. I figured the loss of mass would override any cooling benefits of the extra surface area but I was wrong. As long as they're done right, preferably cast with the rotor reliability will be fine. One interesting thing the paper said is that ALL crossdrilled rotors will one day develop cracks at the holes. The good ones just happen to wear out long before the cracks develop.
Correct, but I'm not making a distinction between slotted and drilled. I'm saying for the slotted vs slotted and drilled. I know it's still adding holes to the rotors but it's not one vs the other. We've found that in real world conditions the customer has not been able to see a difference functionally in the slotted vs drilled and slotted. And it comes down to appearance for most. Maybe the slotted and drilled will edge out the slotted by a little but I think it will be negligible. I do agree that it helps but I don't think that it's going to be significant enough to make a difference to the customer in the applications we're dealing with.

Also as you mentioned the holes will eventually develop very minute cracks but on the better rotors it usually doesn't occur until the end of the life of the rotor.
Old 06-12-2010, 02:57 PM
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I totally agree. The advantages of drilling, other than the weight and wet weather don't come into play until you're really pressing them to the limit.
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