Article: Rotors: drilled, slotted or blank?

moi je parlais des disc lol aynyway sa revien a dire la meme chose que bbqman ... sauf en regardant a bonne place pour en tirer cest propre conclusion ...

lui il fait bien sa job mais on peu pas dire la meme chose de toute les partseller ...:dunno:
 
Zigzag- in your initial post you said that ABS was a consideration when chosing brakes. I simply said that ABS has no bearing on what type of brakes you buy.
I never said that drilled discs don't have their place in motorsports. If you read my post, I said that when factory discs are so oversized for the car- they use drilled discs for weight savings. In the end, all drilled discs end up cracking, but most race cars swap out the discs before this happenes, us street guys like to get full use out of a set of discs.

Good discussion otherwise.
 
Gregster said:
What does Nascar have to do with Polak asking about his STi brakes?????

On another note since we have gone off topic.. These are the brakes off a Daytona Prototype


They'll usually need a brake change around the 10-12 hour mark. But the calipers are quick disconnect..

The pad is about an inch thick.. the pad used for Nascar on road courses is about 1 1/4, after the race it's almost on the backing plate.
The GT cars such as the GT3s etc usually go a full 24hours these days!
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True, brakes are bled on the bench, pre-loaded with pads and are quick to change !

That's why carbon brakes are such an advantage, they wear out very slowly. If you don't crash and break the discs they're cheaper in the end than steel rotors and pads becuase they can last up to a season on an LMPC car apparently.
 
I think you guys under estimate drilled discs a little too much. Maybe in extreme conditions, they'll crack but I've had my drilled discs (not oversized, same size as stock) for two winters now, hawk street compound pads and no tracking but spirited driving and I have had no problems, they are still straight and have a crazy bite when I touch the pedal. I've put over 50,000kms on them so far and they look good. Sure, I won't see any micro cracks but I sure as hell don't feel anything wrong.

My only complaint would be the noise they make under heavy braking but other than that, when time for replacement comes, I'll replace with the same thing again.

Sent from my HTC One XL
 
There's definitely a lot of research to be done about brakes, I've read forums for hours when I was looking for new brakes for my WRX. A lot depends on your driving as well.

I ended up getting brembo blanks with hawk hps. I find this to be a good setup for regular and "spirited" street driving. Maybe on the track you might wanna get some more aggressive pads, which are not as good on a daily driver since they usually take some time to warm up.

I've read about a lot of people who just use generic blank rotors on the track with some good racing pads and good brake fluid (motul or something) and they say it works great. But maybe with a more powerful car you might need better rotors.
 
G-Bus said:
I think you guys under estimate drilled discs a little too much. Maybe in extreme conditions, they'll crack but I've had my drilled discs (not oversized, same size as stock) for two winters now, hawk street compound pads and no tracking but spirited driving and I have had no problems, they are still straight and have a crazy bite when I touch the pedal. I've put over 50,000kms on them so far and they look good. Sure, I won't see any micro cracks but I sure as hell don't feel anything wrong.

My only complaint would be the noise they make under heavy braking but other than that, when time for replacement comes, I'll replace with the same thing again.

Sent from my HTC One XL
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Carl and I are speaking from direct experience and we offer advice based on that experience
 
Gregster said:
Carl and I are speaking from direct experience and we offer advice based on that experience
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I know, I'm not saying otherwise but more and more OEMs are using drilled discs from factory and based on my experience they work fine.

At the track, I won't argue with you guys...

Sent from my HTC One XL
 
G-Bus said:
I know, I'm not saying otherwise but more and more OEMs are using drilled discs from factory and based on my experience they work fine.

At the track, I won't argue with you guys...

Sent from my HTC One XL
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Weight and "racing" look.. Looks sell :)
 
J'aime beaucoup mes DBA500 slotted en avant:
30031_421891904244_1361340_n.jpg
 
Random and possible stupid question, this is a good thread by the way!

I've had cross drilled/slotted in the past. I was going to upgrade to slotted once my stocks needed changing, especially to help with Time Attack

On a RWD car, any benefit to having slotted in the rear and cross drilled/slotted up front? I'm pretty sure I've seen this somewhere before. Would this actually throw off braking or no effect at all? Always been curious...
 
If you are on a budget, just go with the cheapest blank discs and good pads ---> HPS/HP+. You will need to give multiple hard braking to fade HPS on the street but they can and will fade if driven hard. HP+ with cheap blank will NOT fade on the street. You will, on the other hand, get a lot of dust and noise. Keep in mind that lots of people run blanks on the track without any problem. If you like the idea of a slotted disc, they sell the ATE's at Canadian Tire and there a steal when they get on sale. I've been running them for years on the street/track without any issues. If you want to get the max out of your brakes buy some good bake fluid like ATE super blue. It will take anything you will throw at it on the streets.

Ah yeah i've tried cross drilled on the street and the holes got full of brake pad material making a flat face in the end. You could also see a lot of small crack forming around the holes.
 
TheGreatOne said:
Random and possible stupid question, this is a good thread by the way!

I've had cross drilled/slotted in the past. I was going to upgrade to slotted once my stocks needed changing, especially to help with Time Attack

On a RWD car, any benefit to having slotted in the rear and cross drilled/slotted up front? I'm pretty sure I've seen this somewhere before. Would this actually throw off braking or no effect at all? Always been curious...
Click to expand...

You're better off trying different pad combos front/rear...
 
G-Bus said:
I think you guys under estimate drilled discs a little too much. Maybe in extreme conditions, they'll crack but I've had my drilled discs (not oversized, same size as stock) for two winters now, hawk street compound pads and no tracking but spirited driving and I have had no problems, they are still straight and have a crazy bite when I touch the pedal. I've put over 50,000kms on them so far and they look good. Sure, I won't see any micro cracks but I sure as hell don't feel anything wrong.

My only complaint would be the noise they make under heavy braking but other than that, when time for replacement comes, I'll replace with the same thing again.

Sent from my HTC One XL
Click to expand...

In NO WAY sppirited driving can be compared to track driving when it comes to brakes....

On a track you are using 100% of your brake force through 7 different corners, one after the other.

You won't ever do this on the street. On the street, even if you do a 100-280 just for fun, you won't stop from 280 to 100

in 2 seconds...You'l take your time...



On the track there's no time for your brakes to breath correctly, and yes they pretty much all crack when cars are pushed to the limits...
 
David603 said:
If you are on a budget, just go with the cheapest blank discs and good pads ---> HPS/HP+. You will need to give multiple hard braking to fade HPS on the street but they can and will fade if driven hard. HP+ with cheap blank will NOT fade on the street. You will, on the other hand, get a lot of dust and noise. Keep in mind that lots of people run blanks on the track without any problem. If you like the idea of a slotted disc, they sell the ATE's at Canadian Tire and there a steal when they get on sale. I've been running them for years on the street/track without any issues. If you want to get the max out of your brakes buy some good bake fluid like ATE super blue. It will take anything you will throw at it on the streets.

Ah yeah i've tried cross drilled on the street and the holes got full of brake pad material making a flat face in the end. You could also see a lot of small crack forming around the holes.
Click to expand...

but blanks aren't aesthetic doe
 
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