PRO/CONS OF CROSS DRILLED BRAKES

**woodfire** · March 19th, 2003 12:40 PM

sabi nila it cracks when it gets wet while still hot. however, some say the braking power easily is double that of stock/oem.

other comments please! :?

**ferdi** · March 19th, 2003 01:04 PM

woodfire,

I think the advantage of cross drilled is the cooling effect thus you can have consistent braking even in heavy abuse conditions. The holes though weaken the structure. A compromise is slotted rotors which act like vents to throw brake dust out and cool the rotor. Unless you are in a race, i think cross drilled and slotted should work fine or better than oem.

ferdi

**boyscout** · March 19th, 2003 02:14 PM

Advantage lang talaga niya it cool the brakes for more braking power.
Pero stock brakes na kinrossdrill lang ay di effective at hindi designed yung stock brakes para butasin lang liliit yung contact patch nung brake pads sa rotors.
Pansinin niyo yung mga cross drilled brakes usually malalaki para malaki pa rin ang contact. Holes lang are placed to cool the brakes faster.

**SunTzu** · March 19th, 2003 03:02 PM

just buy an aftermarket brakes...dont modify ur oem brakes...ung sa friend ko papunta silang tagaytay...nabiyak ang rotor..coz nag pacross drill sya.

**woodfire** · March 19th, 2003 03:35 PM

yup, my kumpare has brought in a brembo kit w/c is cross drilled. when i showed it to a shop for possible installation, they discouraged me from using it since they say cross-drilled discs easily cracks. duh? :?

anyways, i believe brembo will not manufacture something that will cause some problems and product recalls later! secondly, i won't use the car for track races. it is only for heavy weekend street driving.

what do you think?

**sup** · March 19th, 2003 04:00 PM

aside from prone to crak, mabilis maubos brake pads mo if cross drilled. an alternative to that is slotted disk brakes (parang golf ball ang texture pero hindi lahat ng disk mismo). meron nabebenta na ganito, i think ebc ata ang gumagawa (i think.. im not really sure) :D

**vinj** · March 19th, 2003 04:43 PM

Yep, they are prone to cracking. If ever, get ones that are branded (EBC, AEM, Brembo, Wilwood, etc)... Slotted or dimpled (not drilled through fully) may work better.

Slotted rotors help in cooling. If that is your concern, upgrading the pads to something like EBC's, then using brake fluids with a higher heat capacity (DOT 4.1, RBF600, etc) will help before you can consider getting cross drilled rotors. If you want to upgrade, getting a bigger brake system will help as well.

My .002

**roydok** · March 19th, 2003 06:13 PM

Mga sirs,

Di po ba ventilated na ang mga most front disks? Is this the same as with cross drilled ones? Isn't it much better to choose disks with larger diameters?

Thanks. :D

**ssaloon** · March 19th, 2003 06:32 PM

Are Big Brake kits really better?

Big brake kits that are incorrectly designed can acutally perform worse than your stock brakes. Bigger pads and rotors primarily do one thing: They dissipate more heat than the stock brake setup. They do not necessarily stop you in shorter distances. Stopping distances are impacted by the coefficient of friction of the brake pad used and the clamping force applied by the caliper. Bigger brake pads do not apply more pressure- they only apply the same pressure over a bigger area. If heat dissipation is of primary concern- then a big brake kit will reduce the rotor and caliper temperatures. Otherwise, Premium Grade Brake Pads with higher temperature range capabilities and a higher coefficient of friction will provide the best improvement in braking performance.

:D

**1.8T** · March 20th, 2003 04:14 PM

Originally Posted by roydok

Mga sirs,

Di po ba ventilated na ang mga most front disks? Is this the same as with cross drilled ones? Isn't it much better to choose disks with larger diameters?

Thanks. :D

you mean vented?.
get better pads, and maybe stainless braided lines for better pedal feel.

**sup** · March 20th, 2003 05:53 PM

yung mga front disk brakes ventilated. ibig sabihin, may space between disks. magkaiba yun sa cross drilled (cross drilled, binubutasan yung disks mismo). some cars with 4 wheel disk brakes (i.e. SIR) have ventilated front disk brakes and solid rears..

tama si 1.8T, better pads (and stainless braided pads, if money is not a problem) will help you have more stopping power than stock pads.

**ghosthunter** · March 21st, 2003 08:26 AM

Originally Posted by woodfire

sabi nila it cracks when it gets wet while still hot. however, some say the braking power easily is double that of stock/oem.

other comments please! :?

I have cross-drilled & slotted brake rotors in front. I'm also using Bendix Metal-King pads. I upgraded to the drilled rotors because of brake fade caused by overheating pads.

I even have tried using kevlar pads but I still encountered brake fade (but it took longer to fade).

But braking power doesn't increase if you have cross-drilled rotors as compared to stock/oem.

**woodfire** · March 21st, 2003 11:27 AM

well, i'll have my brembo kit installed tomorrow. the kit (front only) includes two big cross drilled rotor discs and calipher assembly.

i'll post my experience as soon as installed and tested.

**1.8T** · March 21st, 2003 12:11 PM

I have these sitting in my garage. But changed my mind, I'm getting 13.1 fronts and 12.1 rears cadium plated crossdrilled/vented 2 piece rotors.

**cardsVR** · March 22nd, 2003 06:18 AM

get ceramic composite brakes/discs which are made from carbon fibre reinforced silicon carbide. 50% lighter than conventional cast iron steel and will last you 300,000 kms

**phillipogi** · March 24th, 2003 03:35 AM

so what's the best way to increase braking power without worrying too much of breakage?

**ghosthunter** · March 25th, 2003 10:16 PM

Retrofit bigger rotors & calipers on your car.
Example: LEVIN or TRUENO brakes upgrade for your Corolla.

OR

kelvar brake pads upgrade on your stock caliper/rotor.

**splerdu** · March 26th, 2003 02:17 AM

ceramic composites are good, but with the exception of the ones on the Ferrari Enzo they are close to useless for street use. operating temperature range is too high, so they're only useful for race applications.

the post about big brake discs is also a bit oversimplified. aside from better heat spread, big brake discs/rotors increase the surface area for clamping... this gives stronger braking force aside from being able to stay cooler. it also gives the brake rotor a longer effective lever arm, so the brake force is again increased by that factor.

**cardsVR** · March 26th, 2003 10:33 AM

ceramic brakes are seemed to be used in porsche 911 production cars... as well as on mercedes cl55

http://www.autointell-news.com/News-2002/August-2002/August-2002-2/August-14-02-p3.htm

http://www.mercedes-benz.com/e/menu/search/searchframe.htm?_back=www.mercedes-benz.com/e/default.htm

**FLiPMaRC** · March 27th, 2003 05:14 AM

About $100 a pair, but I'm not sure if they will ship to Philippines

Link: http://www.groupbuycenter.com/buy.aspx?id=9256

I would personally go for just the Slotted Rotors. Too much speculation on the integrity of Crossdrilled or even Dimpled rotors.

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PRO/CONS OF CROSS DRILLED BRAKES

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