What type? Um, run the car fast and slam the brakes. When you get it home, take off the wheel, and proceed to grab the rotor. If it's extremely hot, it's working just fine, and there would be no need to change it!

 

Uhh, no.

On dirt or gravel (any deformable surface, really) just because you are at a high angle to the road doesn't mean you are sliding. You're driving on basically loose ***** of material, and they keep rolling out from under you. You still have plenty of traction, it's just that the *road surface* is moving.

If you try to drive at pavement-style angles to the road, you won't go anywhere. And if you try to accelerate mid-corner, you basically plow right off the road. Brakes are *important*.

 

When I had drilled rotors on the front and used them hard on the track, they eventually got hairline cracks around the holes. Scared the bejeezus out of me when I saw it. Never again.

 

Don't use Chinese rotors next time...

 

The only time the slotted/drilled rotors will help you is if you keep your brake temperatures high enough for the pad to create a gas buffer between the pad and rotor, the slots/holes vent these gases from the rotor face. This will not occur on the street legally, in any autocross or on many other events unless you are running at high speed and braking for corners continually lap after lap.

So they are for appearances only unless you are running door to door on road curcuits, in which case you'll get rid of the stock braking system anyway.

Cheap stock rotors will warp, but are cheap and easily replaced when you feel them start to pulse through the pedal. You need brake pads suited for your driving, a lot of race pads will scare the hell out of you on the first drive down to the store each morning as they don't operate well when cold,

Also good quality fluid, regularly changed, as this fluid is Hydroscopic when means it absorbs water which boils and creates steam in your lines reducing the effectiveness of your brakes.

 

they were brembo

 

brembo rotors that were drilled or crossdrilled rotors from brembo? most of the ones you buy that say brembo are brembo rotors that were drilled unless you paid uber cash for them. either way you would have gotten screwed. ie. see earlier peejay post. if someone thinks they help performance they are idiots, ask anyone who tracks a car what they think about them and you will get laughed at. if you are looking to upgrade and have lots of money get a set of carbon brakes.




mmmmmm carbon-ey goodness

 

well in my case, the difference between track and street is very slim. I live in the mountains where there are roads(hwy221, 321) that I have lost pressure in the pedal and it went to the floor. (deffinately bled the brakes after that day) Anyways, I am just saying some roads do require more ventilation. I am not saying that Slotted rotors will slove the problem but It cannot make it worse. Brake ducts would help also, like someone has already said. I dont know if anyone has mention this, If you get new rotors you will need to get new pads. so new pads (ones that bite IE: Hawk) + plus new rotors should aid in braking

 

Next time, look on the box...Brembo rotors come from a lot of places depending on price....you might be horrified to see who they deal with....Hop Sing Rotor Company?

Rumor is that Wal-Mart will be carrying Brembo next year......

 

Chinese rotors........

 

So they're definitely made in China, since Wal-Mart only deals with China-made product.

Brembo is just a manufacturer, I've seen a lot of GARBAGE rotors stamped Brembo. (Those $10 specials again...) Chevy makes nice Corvettes, doesn't mean just because a car is a Chevy means it's the ****. As an example.

 

Well, they do gas less than old. ... but even Hawk, PFC and such gas at high temps; heat breaks down the bonding agents

 

Were there chinese brembo rotors back in 94 when I bought mine?

 

I thought when you toast rotors like that, they warp. I thought it's the uneven heat that causes them to bend.

Hmmm... I might not have to dismantle the hubs on my truck after all (4x4. PITA to change front rotors. I usually have two sets of rotors for each vehicle I have. One set on car, one set off car. I have em turned and pick em up from the machine shop before I do a brake job... Unless it's a cheap car like my old Civic, where new rotors = the cost of turning them... I need to buy a brake lathe.)

 

Quick question gets quick answer........yes..............

 

Heat might cause them to "judder" when they get REALLY hot if the rotor is of poor quality (severe dimensional asymmetry internally, so the expansion rates around the rotor are off) but they go smooth again when they cool off.

"Warped" rotors is usually caused by rotor runout when the rotor is installed. Use a dial indicator and make sure there's *zero* runout when it's installed. If you don't, the high spots will wear down as you drive down the road, then you get a thickness variation, and it all goes downhill from there.

Another reason to use better quality parts.

Re: outgassing... If they are outgassing, they aren't bedded-in yet.

 

My plan was always slotted and crossdrilled. That way you have a place for the hot air and for some better braking power.

 

If you eliminate the rotors altogether you'll have ULTIMATE cooling !@!!!

 

You win. BEST IDEA YET!

 

Interesting that nobody has brought braking technique into this argument.....

Long, steady braking will result in heat buildup and glazing.

Harder controlled braking over shorter periods reduces both heat buildup and glazing.


Just thought I'd throw that in there.......

 

I think you may have sparked 3 more pages.

 

I eliminated my wheels as well. too much weight!?!

 

It's way lighter if you take off the doors too, not to mention you get the ultimate cooling. Likewise with the hood. That baby will fly. I took it down Pikes Peak with no hood, doors, wheels, or brakes. The handling was a bit sluggish, but that was to be expected.

 

please tell me you are joking

 

take it a step further if you want to free up some real power. ditch the axels too and reduce some more rotational mass!!!