dimpled vs. cross-drilled rotors?
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Originally Posted by Judd
I really recommend the ducting, cheap, easily reversible and no drawbacks on the street.
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Originally Posted by pimpmaro
What about when it rains and the duct throws a nice cool splash of rain water on hot brakes?
Marc
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Well, my concern is that ducts are designed to concentrate airflow (a fluid) and in the event of splashes or puddles, it would concentrate the water and dump it on the rotor instead of the ambient splashes it's accustomed to. It was just a concern of mine.
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If I was to do ducts, im just gona hack up my front bumper and quater panels and install NACA ducts, label it a race car and call it a day. (ive been toying a lot with the idea).
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Originally Posted by PrototypE
Let's see some pics of your new ductwork setup, Judd!
As far as the question on water hitting hot rotors, I have something like 20K on the car with the ducting under there. Plenty of rainy days in those 20K miles too!
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Originally Posted by stang killer
If I was to do ducts, im just gona hack up my front bumper and quarter panels and install NACA ducts, label it a race car and call it a day. (I've been toying a lot with the idea).
There's no need for all that cutting of the body work and if you have cruise control the module is going to prevent you from running the duct tubing to the rotor on the drivers side. You would have to mount the duct tubing real low to get it around the tire and then it would probably get tore up in short order. Like in this pic:
![](http://mywebpages.comcast.net/miketaylor68/Gordon/Brake%20ducts%2003.jpg)
It looks like it's hanging too low in my opinion.
Going through the frame rail looks like the hot ticket. It's super clean and you can't even tell the car has ducts until you take one of the wheels off.
See how clean and tidy this duct design looks? And no rubbing when you turn the wheel.
![](http://www.99chevy.com/multimedia/pictures/2004/sebring_2004/gallery_1/images/P1010024.jpg)
Now, of course, you don't need to run 2 ducts, just one to the rotor hat will do the job.
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I dont have cruise control anyways, and it would prolly be through the frame also. I thought about using the opening under the turn signal, but I didnt think it would pull enough air. With the way the bumper is designed on the pontiacs, I could see the fog light opening being the best bet. With the shape of the bumper I could see the air passing right over the holes on the sides.
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Originally Posted by stang killer
I thought about using the opening under the turn signal, but I didnt think it would pull enough air. With the way the bumper is designed on the pontiacs, I could see the fog light opening being the best bet. With the shape of the bumper I could see the air passing right over the holes on the sides.
Indeed, my thoughts exactly Stang Killer. You don't have cruise control? Did you remove it? I don't think I've ever seen a T/A without cruise.
Judd, I did check out your older setup, but I'm sure everyone wants to see pic's of your NEW setup!
Bummer about your axle, dude. Hmmm.
Can't expect too much of an s-10 ten bolt, I hear.
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Originally Posted by stang killer
I dont have cruise control anyways, and it would prolly be through the frame also. I thought about using the opening under the turn signal, but I didnt think it would pull enough air. With the way the bumper is designed on the pontiacs, I could see the fog light opening being the best bet. With the shape of the bumper I could see the air passing right over the holes on the sides.
You could use the fog light holes also, but you would have to take the front end off to modify the metal bumper. You'd need to drill 2 large holes in it and seal off the back side and ends. Then all the air going into the bumber will be forced into the frame rails. It's a lot more work, but if you still have the foglights, they will block most of the air.
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Here is a pic comparing the sizes. Now the small lower hole is a bit larger than 3" tubing so you can see that the hole above is is quite a bit larger and the fog light hole is WAY larger.
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I'm sure the fog light hole would force the most air to the rotor, but I think the smaller hole would still get the job done (considering almost no air is getting to the rotor right now) and with a grill would look totally stealth.
![Name: frontholesizes.jpg
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I'm sure the fog light hole would force the most air to the rotor, but I think the smaller hole would still get the job done (considering almost no air is getting to the rotor right now) and with a grill would look totally stealth.
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Originally Posted by Bad30th
Someone please tell me why the most expensive and best brakes I can buy for my car (Baer or Wilwood) are drilled and/or slotted.
Marketing ? I doubt it. If a solid rotor was better they would be solid. Why are there no $2000 aftermarket solid brake rotors ?
FWIW, I never noticed any difference between new stock brake rotors/pads and new blingy stuff.
Bad30th
Marketing ? I doubt it. If a solid rotor was better they would be solid. Why are there no $2000 aftermarket solid brake rotors ?
FWIW, I never noticed any difference between new stock brake rotors/pads and new blingy stuff.
Bad30th
Stoptech allows you to get blank friction rings. Their sales staff even admit that those features are mostly looks, with the exception that slots have an ability to constantly wipe the face of your pads, thus shortening their life.
The only pads that require drilled rotors would be Pagid, since they warn that they severely outgas for most of their pad life, but why spend the money on them, since their performance hasn't been proven to last longer than ones that don't.
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Originally Posted by steveo346
well i recently warped the **** outta my front rotors so im gonna end up buying some cheap and decent cross drilled rotors from pepboys....i think their called stoptech im not sure but their $48 bucks each...and they can also get me the hawk hps pads
Their description of their EBC rotors are simply a joke. If you'd like to not only warp, but also crack your rotors, definitely go for the cross drilled, slotted, dimpled, and other useless rotor face patterns because those rotor face patterns definitely weaken the rotors srtucture and cause stress risers, not to mention the rotor face patterns cause premature and uneven pad wear.
Read the Brake FAQ sticky for more details.