I just got rotors from Murrays dicount auto, they were 116 with tax for all 4! They seem to be working great fo me, they were in a much better condition than my old stockers. They also had a good crosshatch machined into them, so no more squeaks! Also, while slotted and drilled disipate heat, they were through pads much faster, and if you dont use the right pads, you will not benefit much. Standard pads are designed not to produce much gas, so the drilling is not needed.

 

so ...

Vented Rotors = Good
Cross-drilled = Bad

???

I need new rotors so this would help me make a decision. And I'm still a little confused.

 

Stock rotors are vented, they are not solid.

 

Oh noooooooooo......Trey, the resident expert on all things brakes just SAID, THEY ARE NO BETTER FOR COOLING THAN STOCK VENTED ROTORS. Therefore, you are wrong. he is the expert, he knows all the experts, blah blah blah.....I talked to 3 crew chiefs and 3 car chiefs today who told me that the reason they use cross-drilled rotors is because the cross-drilled rotors stay cooler (by dissipating heat faster) than a solid/vented rotor, and because they are lighter. But I'm wrong.

**** it. There is nothing at all wroong with the stock vented rotors. If you want the look, feel, performance, erection from looking at them, etc. of drilled or slotted rotors, spend the extra bucks and get them.

BTW-I agree that drilled rotors should be avoided because of their inherent tendency to crack.

 

you have 3 readily available types of rotors:

1) the vented and factory replacement. all factory replacement and factory rotors are vented. they are not a solid chunk of steel. they have vents inside the surface area of the rotors.

2) Slotted. slotted rotors are vented rotors with slots cut into the surface area to prevent gas and heat buildup which will act similar to water being between the pad and rotor. slots have no effect on cooling except they have a tendency to run a litte cooler due to the fact that there is less friction heat due to gas.

3) drilled. drilled rotors are vented rotors that have holes in the surface area of the rotors. the holes act the same way as the slotted do, except the gas has an easier escape route. they also tend to run slightly cooler than stockers because the effect as the slotted.


as if that wasnt hard enough to choose between, you have a combination of any of the three. the three together on one rotor is a waste of money unless they are the same price as the rest.

 

For anyone interested in the non bickering side of thie thread here is a interesting article I found on the "warped rotors" argument. Written by a real brake systems engineer (sp?) this is straight from the horses mouth. none of this my friends cousin has a monkeys uncle third removed half brother racing lawn mower guy. It's a long read but if you want to know about this its very informative. He dispells alot of the common myth of brakes.

anyway here is the link.
Stoptech

 

Here is a snippet, direct from Summit Racing regarding Wilwood rotors (what would Wilwood know about brakes, right, moron?):
"Other features include zinc plated, cross-drilled, and face-slotted vented rotors for reduced weight and increased cooling area". Wilwood is wrong I guess. I mean, they are only one fo the top-3 brake-parts companies in the U.S. They only supply brake aprts to 85% of the teams running in NASCAR and ARCA......but they're wrong.
Let's see....here is another tasty tidbit from Thunder Racing, regarding PowerSlot rotors. Yeah, I know, Thunder is a bunch of dumbasses who know jack about our cars, too. "Best of all, PowerSlot rotors run cooler, extend brake life, and significantly improve wet and dry brake performance" Angie must be scrambling to get the website corrected about that one, lest she face any liability lawsuits for selling through false adverrtising....
Oh, look...another snip directly from Baer Brakes. You might have heard of them, also. They make aftermarket brakes for street-driven cars....In reference to their Eradispeed Rotors, which are regarded as the best performance rotor for the street by thousands of people:
"All EradiSpeed rotors come with the following features:

Faster thermal recovery
Increased heat absorption
Increased friction and lower wear
Crossdrilled, slotted, and zinc washed
Limited lifetime warranty against warping"
Faster thermal recovery? Isn't that a high-tech way of saying they stay cooler?
You're right. The drilled/slotted rotors are all about looks. No performance gains to be achieved with them at all.
This isn't about it being personal, or me thinking "I'm right, and that's it." It's about you saying something based on your experts you have spoken to, versus my saying something based on the eperts I have spoken to and what I have read. So who's right? I still say it's a matter of OPINION, something you aren't GRASPING.
It's not the least bit personal. I have already established my own opinion of you, based on your attempt to politic for something that has nothing to do with either one of us and perpetuate false/erroneous information. And your attempt at attacking me as a business owner only substantiates that you are, in fact, unwilling to explore the possibility that MAYBE YOUR OPINION ISN'T ALWAYS THE GOSPEL.
Thanks for your input.

 

both of you, g22lvr and trey z28, are waisting this thread space along with my email space. if the both of you would like, you can swap emails and continue this conversation there. or if you like you two can meet in the parking lot and duke it out to see who's right.

another way to solve the delima is to drop it here and now so noone gets the last word.

STOP GRIPING AT ONE ANOTHER

 

Here is my experience with drilled rotors...maybe it will bring light to the situation at hand. I took a set of "stock GM rotors" put them on the lathe and with the help of a friend, cross drilled them on a drill press. At the same time I was putting on new front and rear brake pads. These rotors are considerably lighter than they were previously. Why you may ask...Because drilling them took lots of metal out of the rotors. I'm not claiming to be an expert about anything here mind you.

One rotor came out lathed on the thin side. That rotor has now cracked. The other one is fine no signs of excess wear. I haven't checked them for warping as of yet. I'm not sure wether it was the new pads or the drilling but I did notice an increase in ability to stop. Although when I did "test it" I was going in exessive speed and smoked the brake pads. They still stopped though and they still do.

I'm planning on going to the Baer Extreme + after new rims are aquired. This is due to the fact that I have had bad luck with Stock 1995 Calipers. Which I have replaced with AutoZone Remanufacutred Calipers. They seem to have a problem releasing from the Rotors and rub unevenly.

 

I really don't know what's what wrt the drilled rotor thing. But one thing occurred to me when thinking about this. Of course, they are lighter, but isn't this is a double edged sword? Less weight is generally a good thing, but less weight in a brake rotor means less mass to absorb heat. So shouldn't they run hotter?

No matter what, I can't think that overheated brakes is an issue for most of us. So whether they run cooler, or hotter, probably makes no difference. I don't like the look, so I never even considered them. Seems ricey to me. Besides, I gave up road racing many years age. Now I am in the camp of Bugatti (the guy) who said when someone criticized one of his cars for not having adequate brakes: "I build cars to go, not to stop".

Rich Krause

 

Hey, thanks for the link. Very informative.

Rich Krause

 

you are introducing different variables into the equation-
different materials/thickness

the fact stands, slots/holes do not cool

 

I have a Question for the "experts" reason being I don't like reading threads full of so here goes it. I myself would like to see facts (i.e.) computer printouts of temperature from the different rotors according to a base line say- OE vented rotors and same type brake pads. If anything we should get a bit of this stuff flushed down the drain where it belongs. Cause quite frankly I come on here to learn about my CAMARO and HOW I can go to my shop and UPGRADE So please whom ever decides to take the first step to be a man and stops all this bickering TY for all the rest of the unargumentitive replys.

 

youre welcome rich!

if they dont cool or help in anyway why did porsche take the time and expense to set up their rotors to be forged with the holes???

edit lucky f body if you want to learn then click the link II posted above. its a real long read but very informative. after that click back to the tech page of stop tech and continue reading.

 

I had them at work...

slots = zero cooling