Pics of FCS with Cross Drilled Rotors
 

Thinking of changing my rotors to this.

Why Do you experience fade? You race a lot? Drilled or slotted rotors tend not to last as long because they develope cracks in the drilled or slotted areas.

And even more of a question...why would a picture of them help in your decision? :p: I have slotted only rotors on my Turbo FC. Ive never experienced it myself, but I have known people who have had drilled rotors crack around the holes. There is a huge write-up in the suspension forum about drilled/slotted rotors, and the pros and cons. I suggest you go read it. A rotor is used to absorb energy from the brake pad. Cross drilling/slotting just removes more material that could be used to absorb that heat. But to keep this thread on track.. here is a pic of mine :

https://www.rx7club.com/attachment.p...chmentid=68934
https://www.rx7club.com/attachment.p...chmentid=69042

my rims are not solid, and you can see the rotor, for appearance purposes i was thinking of putting cross drilled rotors, but if they do crack, no sense of the rotors then

who makes a good slotted rotor (lower price) anyhow?

rice

:withstupi
https://www.rx7club.com/forum/images...thumbsdown.gifhttps://www.rx7club.com/forum/images/smilies/jerkit.gif

lol. you guys on this forum are hilarious.

but yeah, drilled/slotted rotors are not the best for a street car.

heres mine..... they are Irotors cross-drilled and slotted rotors....... ive had them for almost 2 years without problems.... and i drive the hell out of my car :bigthumb:

they cost me around $300 shipped for front and rear off of ebay

if lemans cars dont have cross drilled rotors then why would you?

hey vipers, i like your calipers, are they stock or aftermarket?

Higher end vehicles have cross drilled rotors.

:werd:

Do you brake like a mofo? Driving is not what affects the brakes, its stopping that heats them up.

and braking is probably the hardest part of good driving.

i do ALOT of canyon runs!!!!! and before i put the rotors on, my brakes got really hot, and after...... well, i havent EVER had to worry about my brakes not working when i need them to!!! so, they worked for me..... they were exactly what i thought they would be!!! i have no complaints :bigthumb:

they are stock calipers...... i used high temp engine paint, and a white paint pen for the "mazda" letters....... been that way for about a year and a 1/2, and still shines bright!! havnt done the rear yet, ill take pics when i do them!!!

The only reason that a cross drilled brake cracks is because the holes are drilled, not part of the casting. Porsches brakes are cross drilled, but they are actually designed as part of the brake from the beggining. They are not drilled in a sense, but are part of the casting.

Stick to quality stuff and you shouldn't have a problem with craking.

And a good lower cost slotted rotor is Rotora. I know plenty people who run them and have no problems.

the holes are supposed to reduce tempeartures but act like razors.

drilled rotors are bad, slotted rotors have a place.

Not exactly. The whole point of the slots and holes was to vent gases created by the brake pad. The the gases would then act as a buffer between the pad and the rotor. Adding slots or holes was intended to let these gases escape. With modern brake pads, these gases do not exist. Look at F1, or any major racing league.. they all use solid rotors.

So are the stock '86+ brake rotors "modern"?

i have slotted and drilled rotors on all 4 corners.......but its only on there cause they were 125 for 4 off ebay......i couldnt find a solid replacement anywhere for that price......

y
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s

hell......go on the honda forum and ask them how many honda models come with 4 piston calipers.......btw...as far as i know...legend type II and NSX are the only ones

^ hell hondas suck . . they aren't true sports carsin any respect, i guess the NSX is "ok"

http://www.dgtalpimp.com/motegibattle.wmv

Watch this then tell me the NSX is just "ok"

ANd hondas don't suck. You think the S2000 isn't a sports car??? Yea civics aren, but trust me the S2000 and NSX are nothing to sneer at.

WRONG
theyre just fine for a street car
they blow for a car that sees any track duty at all.

only good crossdrilling is cast in
and from what ive seen slotting is just fine, gives you sharper initial bite

got i wish i could count how many people would eat they're words if they came up to a modded honda in a road race... 1000lb+ lighter it a bit a an advantage when your throwing your car around turns at 100mph ;)

anyway back on topic
theirs so many threds on this, the rule of thumb is no car should be equiped with X-Drilled and slotted unless it's for show only. I personally will probally be using slotted rotors becasue my car will be seeing the road course (2 strights with 120 to 40 stops per lap :eek: ) alot and i want to keep glazing at a minimum. I'm not going to buy them tho untill i can varify that i am getting glazing when driving

:bigthumb: read under my name :D damn haters :rolleyes:

Piss on what theses people think, if u like them thats all that counts, go for it man. i think they look good.

look good... but i quote "...untill your trying to stop for that kid running across the street and your rotor breaks in half." <<< seen it happen, just minus the kid part. my friend was stopping for a stop sign and all of a sudden we here a boom, something hit the ground and the brake pedal went to the floor :eek:

uh, WRONG.
yes, they will WORK for a street car just fine, however, they are not the BEST choice, as I said in my post.
cross drillling reduces surface area, therefore less clamping force. plus, they won't get warm as fast, so if you have somewhat of a good pad, it will take longer for them to work to their best. even hawk HPS which seem to be very popular choices(including for my own car) take a little bit of warming before they work to their fullest.

as for slotted, they work great, but they wear down pads a bit faster(from my experience anyway).

SO.... mr. "WRONG", I believe I would be correct in saying "crossdrilled/slotted rotors are not the best(note the key word 'best') for a street car".

Benefits of PRCS Power-Rotor (cross-drilled / slotted rotors) over stock rotors:

*

PRCS Power-Rotors cross-drilled rotors run approximately 200 to 250 degrees cooler than stock rotors
*

Less rotor warping since they run at a lower temperature
*

Lighter weight
*

Less brake fading
*

Improves wet-weather braking with shorter distance
*

Mill balanced to prevent vibration
*

Ground finish that eliminates run out and taper
*

Double disc ground to ensure parallelism
*

Slotted Rotors run approximately 100 degrees cooler

Disadvantages of using cross-drilled / slotted rotors over stock rotors:

*

Slotted rotors tend to wear brake pads more quickly because the slots act like razor blades each time they go around, but this will increase brake pad "bite" which equals better braking.
*

Cross-drilled rotors lose structural integrity from the holes and tended to crack easier than stock rotors under racing conditions.

Why use PRCS Power-Rotors cross-drilled / slotted rotors over other brand?

*

The holes are frequently drilled too large on other manufacture's rotors, penetrated the cooling vanes, and were not radiuses or chamfered.
*

Power-Rotors zinc plate our rotors to prevent rust and corrosion

Policy and Terms

^^^ from an ebay seller.

I have made my choice, sticking with solid rotors.

Actually, slotted rotors have no downsides at all really. We run them on track-only cars and they never have warped or cracked on us. Pads don't last more than a season usually (depending on how many races per season. We usually do ~8/year/car), which is to be expected. We are running vented rotors that have "custom" slots in them. Pretty much, it's a 2 peice rotor that we bolted in the mill, then made two slots all the way across on each side of the center, each side of the rotor. Cheapest way to do it, and it works great. Just don't cut too deep on the rotor face. Also, brake fade and heat is no longer an issue with these cars we have done this on. It clears out dust and gasses better than cross drilling, and it dosen't weaken the rotor like cross drilling does.


EDIT: Also noticed that nobody has posted any pics of FC's with cross drilled/slotted rotors per the thread title ;)

um... yes they did post pics. like i said, if lemans cars have solid rotors, then why would we change? the main thing is they havemassive break ducts and shit to flow a massive ammount of air into the ducts.

the only thing you should get is new pads, and some braided break lines with the sleave over the braids, cus dirt anbd gunk get int between the braid and eat away at the lines. people who buy braided lines that arent coated with something are tools. im sorry buts its true.

^ Okay, apples and oranges my friend. We slotted rotors on the cars we run because they don't allow ducting to the brakes like LeMans series cars can in our series. Also, who is going to go through the money and trouble to duct air to the brakes on our cars like the ALS cars do. Also, the ALS cars don't want the brakes to wear quickly because it's an endurance race, like the nextel cup series. Therefore they sacrifice braking distance for endurance, whereas on our cars we don't need to.

our 97 911 has cross drilled rotors and it's stock.

my car can stop just as fast as your car. doesnt do a bit of dirrerence. if you get cross drilled, you have to get bigger breaks. proches have bigger breaks cus their cross drilled. if they werent, they wouldnt be any bigger than ours i bet.