ACDelco Drilled and Slotted Rotors
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The only reason to go with drilled or slotted rotors is either to save weight for drag race or autocross, or for the bling factor on the street. Keep in mind that holes and slots are big stress risers on a part which is heavily stressed.
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you're going to have to replace your rotors really fast if you go with drilled. drilled rotors crack under hard braking and can actually crack all the way through the rotor (from front/back), not just little stress cracks. your better off with just normal blanks (brembo) or gas slotted (ATEs are looking good, check them out at Strano Parts), but def stay away from drilled
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slotted/drilled aren't necessarily bad...yes there is a chance they can crack, but really only if you use them hard alot or track days etc. I talked with the guys at WS6Store and 2 different guys have had them for over 3 years with no problems.
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Sure you see people who have had a COUPLE cracked holes in rotors. But look at Mercedes, Porsche, Ferrari, etc. Most of them have slotted/drilled. Hmm, they must be there for a reason. As long as its a QUALITY rotor, you're ok, just don't go cheap.
People see one review of cracked holes on a cheap rotor and think all drilled rotors are ****. I personally will be going to some slotted rotors, I just don't think drilled looks that good or is worth it at all. Slotted rotors is enough to relieve some gas pressure between the pad and disc without sacrificing much surface area or having to drill through the entire rotor.
People see one review of cracked holes on a cheap rotor and think all drilled rotors are ****. I personally will be going to some slotted rotors, I just don't think drilled looks that good or is worth it at all. Slotted rotors is enough to relieve some gas pressure between the pad and disc without sacrificing much surface area or having to drill through the entire rotor.
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#8
[QUOTE=HoLLo;10296966]Sure you see people who have had a COUPLE cracked holes in rotors. But look at Mercedes, Porsche, Ferrari, etc. Most of them have slotted/drilled. Hmm, they must be there for a reason. As long as its a QUALITY rotor, you're ok, just don't go cheap.QUOTE]
your missing the point the rotors are cast that way on those cars so there is less stress and they are also vein directional for cooling.
the rotors for the fbody have non directional vein and are cut which is the stress riser.
so dont compair apples to oranges
your missing the point the rotors are cast that way on those cars so there is less stress and they are also vein directional for cooling.
the rotors for the fbody have non directional vein and are cut which is the stress riser.
so dont compair apples to oranges
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My wifes car has Delco D/S rotors with 60,000 miles on them and NO CRACKS (they were put on by the Pontiac place at 72,000 miles and the car has 129,000 on it now.) I did have to have them turned when I put new pads on it last month because they were slightly wharped...but mild turning took that out. They are as "good" as the factory rotors (better IMO) and look a lot better.
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I've used them before, and they weren't worth the money spent.
As a note, even the OE Mercedes, Porsche, Ferrari, develop cracks as well. I've witnessed more than I care to admit. Many times, the "rotor face patterns" save negligible weight and yield higher rotor temps than than "blank faced" rotors of similar material and dimensions under similar performance conditions.
Want improved braking? Look mostly at an upgraded pad. Look to a good blank rotor for longevity and consistency. Most of all make sure your brake system is in good condition.
As a note, even the OE Mercedes, Porsche, Ferrari, develop cracks as well. I've witnessed more than I care to admit. Many times, the "rotor face patterns" save negligible weight and yield higher rotor temps than than "blank faced" rotors of similar material and dimensions under similar performance conditions.
Want improved braking? Look mostly at an upgraded pad. Look to a good blank rotor for longevity and consistency. Most of all make sure your brake system is in good condition.
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i just dont see spending the extra dime on something that can turn out to cost more in the short run, if you wanna upgrade looks do the vette brake conversion with a larger diameter rotor (i think you can do that now)
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they are not necessarily more expensive.....I have less than $300 tied up in mine. I bought them from WS6store and even with the slotted/drilled/zinc plated with HPS pads, they were less than most blank rotors. if they crack, screw it, I'll throw them away and try something else.