Cross drilled brakes

Post by **GELLIS2586** » Mon Jul 28, 2003 7:27 pm

Who makes cross drilled oem size brakes for a s-14. I know brembo does but they are 200 for front and 200 for back. I was wondering if there were any that were still good quality just a little easier on the wallet.

Website · Post by **quiksilvia** » Mon Jul 28, 2003 7:27 pm

go to http://www.tirerack.com they should have the stuff

Post by **GELLIS2586** » Mon Jul 28, 2003 7:27 pm

tirerack only has oem style brembo not drilled. but thanks I found this one place called rotor master and they had a whole set for 229 front and back. Has anyone heard of this company good or bad.

Post by **S14 Wannabe** » Mon Jul 28, 2003 7:27 pm

Hey man I really don't want to sound like a **** but rotors/brake parts are safety parts. That being said, you shouldn't go cheap on these parts just because someone else makes a lesser quality at a cheaper price part. Really I wouldn't get cross drilled at all.... from anyone. Stick with slotted since you don't have the Z32 upgrade and just buy the better product. Hell if I were you I would just buy just OEM Brembo blank rotors. They are just as effective with good pads.

Post by **nomuken** » Mon Jul 28, 2003 7:27 pm

PowerSlothttp://www.powerslot.com/http://www.shopitout. ... oduct.aspx

Post by **[Zero-S]** » Mon Jul 28, 2003 7:27 pm

I agree w/S14 wannabe. Seriously if you don't have the Z32 upgrade, a set of xdrilled/slotted rotors will kill your pads, you'll be replacing them almost twice as often.

btw s14 I like your avatar...

Post by **240_Keyy** » Mon Jul 28, 2003 7:27 pm

Hell, you don't even need brembo blanks, just get some regular ones from NAPA or something. A plain rotor is a plain rotor...

They work fine for me...

Post by **GELLIS2586** » Mon Jul 28, 2003 7:27 pm

so slotted and drilled rotors wont help my stopping at all

Post by **[Zero-S]** » Mon Jul 28, 2003 7:27 pm

xdrilling/slotting a rotor only helps with heat dissapation. In other words it prevents your brakes from fading too quickly. Stepping up to a larger size caliper+rotor will help you stop faster (hence people (including me) wanting to swap in a set of Z32 brakes)

Post by **SmithSR** » Mon Jul 28, 2003 7:27 pm

Drilled rotors reduce surface area...in effect causing a need for a larger diameter rotor to achieve the same stopping force as an OEM sized blank rotor. The holes reduce the amount of material that comes into contact with the brake pad. If you had OEM sized rotors that are drilled, your braking performance will, in theory, actually suffer....because of less surface area, less available friction material coming into contact. Who wants less braking ability? If you want a X-drill, you need to get larger than OEM rotors.

Phil

Post by **[Zero-S]** » Mon Jul 28, 2003 7:27 pm

^^elaborated on my post. I feel special.

...or stupid...

Post by **240_Keyy** » Mon Jul 28, 2003 7:27 pm

Actually the holes and slots have nothing to do with heat dissipation. The holes are there to protect agains outgassing (some organic pads do this, but it is basically irradicated nowdays) and the slots are there to clean the pad surface, they don't actually improve anything.

You may ask "why do race cars have them then?" and the answer to that would be quite simple. Sometimes racecars drive in the rain and the rotors usually have some type of ducting blowing onto them. If they are driving in the rain and slam on the brakes, the rotors heat up and vaporize the water on them. This pressure has to go somewhere so it goes through the holes in the rotor. Sometimes these ducts will spray mud onto the rotor surface (think rallying) so the slots are there to clean the pad surface .

Furthermore, the rotor's integrity is compromised whenever you drill or slot it. This is because as you heat up the rotor, the material expands, but the area immediately around the holes or ends of the slots will be slightly cooler and will not expand in exactly the same way. Over time this causes stress in those areas and often leads to cracking. And cracking on a rotor is not a good thing.

They are of absolutely no use on a street car and I will NEVER put a drilled or slotted rotor on my vehicles...

Zero- The holes do not help dissipate heat, in fact the point of a rotor is to absorb heat and then radiate it back in the form of infrared light (longwave radiation) therefore if you remove rotor material from the rotor, it cannot absorb as much heat and radiate as effectively. Besides, the pad material determines the amount of fade, not the heat of the rotor.

SmithSR- You are right

So anyway, the moral of the story is that x-drilled and slotted rotors are worthless unless you actually have an outgassing problem, race excessively in the rain, or rally all the time.

EDITED: fer spellin erras

Post by **[Zero-S]** » Mon Jul 28, 2003 7:27 pm

okie dokie. Thanks for clearin that one up for me.

Post by **GELLIS2586** » Mon Jul 28, 2003 7:27 pm

thanks im just gonna get some blanks then prolly brembo just cause of there reputation and high quality.

Cross drilled brakes

Cross drilled brakes

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