Well it seem the stock rotors and pads are due for a change, I was thinking about an upgrade...does anyone make a stock diameter cross drilled rotor for these cars? It's a 03 Cavy btw. Thanks!
Thats not really an upgrade, but ok.
Powerslot makes rotors that are either drilled, slotted or I think both. I had the drilled rotors on my sunfire, and while they look cool, they dont last all that long. Theyre great for highway stopping or in case you need to stop right NOW!.
The wear on them is uneven and they kill pads kinda fast.
Id recommend some slotted rotors, as theyre supposed to do about the same, and give more even waer and better life.
It is an upgrade over stock, just not that much.
good luck!
I was going to get a kit from Gravanatuning.com, rotors/pads/lines, was a pretty good price, i thought.
Personally, I would not even think on buying slotted rotors.
But I bought cross-drilled rotors at Jegs.com their name Roto-Tech (Made in Canada btw) with Hawks brake pads and I've had them for 7K miles and they are running as good as the day I installed them. I think they are $45 for each.
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-----The orginal Mr.Goodwrench on the JBO since 11/99-----
I second all these. I find that it's time for me to upgrade aswell, but I'll probably upgrade the car from an 02'cavi to an 05' cavi. I saw an article on the difference of slotted or cross drilled and it appears that crossdrilled is inferior to slotted. Both techniques will draw film and liquid away from between the pad and rotor, but as stated, the pad gets uneven wear with the drilled. And no slotted does not cool the rotor, there is no way that it can cool it off, so that is a misconception. Despite that, slotted has fewer drawbacks than drilled. Plus they are both about the same cost, so I would go for the slotted with some badass pads.
Cross drilled > Slotted
What slotted discs does is it cleans the pad's surface. What is "cleans?" Plainly put, it removes a slight layer of the pad so that when you brake, you get a supposed "clean surface." That removal of the pad is what decreases the life of the brake pad as it slices layers much the same the way like a block of cheese on a cheese grinder.
Cross drilled on the other hand does not "clean the surface" of the pad, but its job is to remove the gas build up between the pad and disc in which is what you want on a non-racing brake pad. The gas between the pad is what gives a longer stopping distance.
Corvette, Porche, Mercedes' AMG, Ferrari, etc. all use or rather, have the option of cross drilled discs, no production auto manufacturer uses slotted discs and that's for a reason.
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-----The orginal Mr.Goodwrench on the JBO since 11/99-----
Cheap slotted > Cheap drilled
When you drill a plain rotor it will have a tendency to crack around the drilled holes after numerous heat cycles. Manufactures use a drilling process that prevents said cracking. I would also avoid rotors that are BOTH slotted and drilled, as you loose quite a bit of surface area. Keep an eye on those holes goodwrench
I've had good luck with slotted rotors in the past, but they do chew through the pad material quite fast.
Mr.Goodwrench-G.T. wrote:
Corvette, Porche, Mercedes' AMG, Ferrari, etc. all use or rather, have the option of cross drilled discs, no production auto manufacturer uses slotted discs and that's for a reason.
Saab's do. All the 9-3 viggens come with slotted rotors.
Also, i've changed brakes on saabs that had aftermarket drilled rotors, and the pads and rotors were all worn unevenly.
Nextel cup cars all have slotted rotors, no drilling. Just food for thought. It might have something to do with the constant stress and the holes in the rotor cracking, but slotted rotors obviously are good enough for them.
VanquisherOfTheVariance (Zach) wrote:Cheap slotted > Cheap drilled
When you drill a plain rotor it will have a tendency to crack around the drilled holes after numerous heat cycles. Manufactures use a drilling process that prevents said cracking. I would also avoid rotors that are BOTH slotted and drilled, as you loose quite a bit of surface area. Keep an eye on those holes goodwrench
I've had good luck with slotted rotors in the past, but they do chew through the pad material quite fast.
Way ahead of ya, I already done a proper break-in on them and did the proper wheel installation just to prevent such thing.
Besides if you really want the best of any world, there is always ceramic.
Sunfires... eh (Tom) wrote:Mr.Goodwrench-G.T. wrote:
Corvette, Porche, Mercedes' AMG, Ferrari, etc. all use or rather, have the option of cross drilled discs, no production auto manufacturer uses slotted discs and that's for a reason.
Saab's do. All the 9-3 viggens come with slotted rotors.
Also, i've changed brakes on saabs that had aftermarket drilled rotors, and the pads and rotors were all worn unevenly.
Upon reading this, I remembered and you are indeed correct, it completely slipped my mind. Which is why brake longevity is not to good on those cars keeping in mind they use soft pads too.
Uneven wear is not the main result of the use of cross drilled rotors though.
Matt wrote:Nextel cup cars all have slotted rotors, no drilling. Just food for thought. It might have something to do with the constant stress and the holes in the rotor cracking, but slotted rotors obviously are good enough for them.
It makes perfect sense to use them on not street legal race cars since they do get new brakes each week. For production cars it is a different story and brake maintenance becomes more $ as cuts the life of the pads.
>>>For Sale? Clicky!<<<
-----The orginal Mr.Goodwrench on the JBO since 11/99-----
Does anyone run aftermarket pads on just oem rotors? It seems there is no benefit in rotors for a daily driven car like mine.
Go slotted but not drilled, power slot offers these... EBC also.
-Aaron
www.TurboTechRacing.com
Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
Im using hawk pads on my OEM rotors right now, no difference in stopping power or anything, they were on my sunfire with the drilled rotors, but the rotors are cracking. The pads were unevenly worn when iswapped them, but theyre in better shape then the hair of OEM pad I had left when i bought the car.
If youre upgrading to expensive pads, its worth it to get a rotor that will compliment them. You can stop a lot harder when needed and not cringe at the fact that the brakes might hate you because of it.
I use Hawk pads and bear decela rotors. Got them TTR can't complain one bit. they stop my 4 door alot better than stock. But make sure yo break them in. ANd yes they are drilled and slotted. 5 months no issues still great 6,000 miles.
For cross drilled rotors the Baer brand seem to do very well.
-Aaron
www.TurboTechRacing.com
Performance Parts For Cavalier, Sunfire, Cobalts and More!!!
sorry to bring this back from the dead, but i searched around and couldnt find anything.. my question is, what size are oem rotors?
www.driftnamiperformance.com
i think your supposed to use ceramic pads on slotted/cross drilled rotors....... i think...
cross drilled is for weight loss. Slotted gives you the benefit of lower temps by allowing the gases generated during braking an easier path of escape, decreasing brake fade and the very unlikely rotor warpage.
I have powerslots and love em.
-Chris
