waveridr85

iTrader: (4)

Can i just drill a series of holes into my stock rotors?

Phoenix1911

Backyard mechanic are we?

Its a VERY bad idea... It will look like hell and guaranteed the rotors will crack, possibly fall apart on you...

99maxi

iTrader: (2)

why drill it yourself when drilled brembo rotors are going for so cheap?? not to mention safety hazards but u will spend a lot of time drilling the holes.. u will have to drill the 2 rear rotors, and 2 front ones on each side of each rotor. better off getting those little plastic covers that make u look like u have drilled rotors..

Axel

iTrader: (3)

Don't even THINK of doing something like that unless you have a death wish and don't mind possible taking a few other people out when your rotors crack in pieces and you no longer have any brakes.
The holes in cross-drilled rotors have been very carefully placed. I doubt you have the research and development resources or findings or manufacturing plant to properly do this.
I repeat, don't even THINK about it.

Second, why do you want cross-drilled rotors? Cross-drilling rotors is an old system for pads that needed de-gassing way back in the time.
Unless you're doing it for looks and you're not extremely hard on your brakes, stick with blanks...

Phoenix1911

I've heard slotted were better than drilled for cooling purposes.... But then again I've heard people say their '95 civic runs 10s with simple boltons... The internet isn't it a confusing place?

Axel

iTrader: (3)

slotted is for ejecting crap from the pads out. Not needed unless you race. Doesn't help with heat. That's not the function of the slots.
Cross-drills are for de-gassing from old pads. Pad technology has since improved and cross-drilling is no longer really needed. You really shouldn't use cross-drilled rotors for racing. I have two cracked cross-drilled rotor sets to prove it (I didn't have any other options and I took a risk, I admit it). I've since found blanks for my brake kit.
Blank rotors are the least "bling-bling" and don't look all that impressive but they are the best for heat and rigidity, etc.

99maxi

iTrader: (2)

if cross-drilled is no longer needed then why do mercedes, porsche, ferrari, etc. still use them??

Phoenix1911

F1 cars use drilled/slotted as well....

Slotted and drilled do disapate heat ~40% better than regular non slotted/drilled rotors.. Because of this they offer ~20% shorter breaking distances..

http://www.chtopping.com/allchvy7/allchvy7.html
http://www.rockyroadoutfitters.com/zukrotor.html
http://www.pdm-racing.com/products/brakesrotor.html

I'm not trying to start an argument or anything I'm just pointing out the fact that the technology does work in racing applications...

95emeraldgxe

dont drill your own rotors, as someone mentioned before you can purchase X-drilled ones for about the same price as OEM

Axel

iTrader: (3)

Which Mercedes uses cross-drilled (I'm not saying they don't, they might, I just can't think of a model)?
As for Ferrari and Porsche, their cross-drilled are much higher quality (the rotors are made with the holes as opposed to drilling the holes afterwards which makes the rotors a lot more rigid) and finally for looks. Show me a GT Porsche race car with cross-drilled rotors at Le Mans or other racing events. If cross-drilled really was better for racing, race cars would all be using them

I quote from http://racingarticles.com/article_racing-27.html

"Drilled rotors offer improved bite but are more prone to cracking more so than grooved or solid discs. Rotors should be discarded of cracks emanate from the mounting holes, slots, ID or OD. If in doubt, change the rotors to be safe. It is not worth the risk of a rotor failure to save a few bucks"

This is why high end racing don't use cross-drilled. I have two cracked sets of cross-drilled rotors.

As for an F1 car using cross-drilled rotors, please I beg you, find me a picture of an F1 car with those on. I would be quite surprised and I'd keep my mouth shut hehe

ch13f

wow... that would be like 37 times worse than the next most ghetto car mod I can think of . But yeah.. don't fsuk with your breaks/rotors unless you really know what your doin.. its an accident waiting to happen

AscendantMax

iTrader: (7)

i got curious so i did a quick search. seems like F1 cars use slotted rotors.


the pic isn't all that great but you can make out a slot on the upper right side of the pic. pic is from howstuffworks.com

99maxi

iTrader: (2)

the S (except for the S430) and the new SL uses them.. as for them cracking since they are much larger in size that will make the chances of cracking less. since our rotors are small the cracking issue is more significant..

StygianMax

iTrader: (8)

I watch been watching lots of F1 races for the past 3 years and haven't seen any cars with x-drilled nor slotted rotors.

Check out: Ferrari rotor, McLaren rotor (sharp angle - not great shot)

CandiMan

iTrader: (1)

Yes!!!!!!

SG01MaxSE

... but FOR THE LOVE OF GOD, MAN, D O N ' T ! ! ! ! !

CandiMan

iTrader: (1)

He ask a simple question, I gave a simple answer. With all the previous post before mine hopefully he got the idea. I'm sorry I just couldn't help it.