Cross Drilled vs. Slotted which is better???
- Thread starter Bl6CRX
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Blanks are the best. More surface area with which to stop with.
BUT if you are set on getting one or the other of these, go with slotted, less material removed then cross drilled.
Cross drilling weakens the rotor and provides far less stopping power then blanks and less then slotted.
BUT if you are set on getting one or the other of these, go with slotted, less material removed then cross drilled.
Cross drilling weakens the rotor and provides far less stopping power then blanks and less then slotted.
preluderjs
Senior Member
Read up, do some searching/ homework.
https://hondaswap.com/forums/index.php?...l=brembo+blanks
(cut and paste that if it doesnt work)
https://hondaswap.com/forums/index.php?...l=brembo+blanks
(cut and paste that if it doesnt work)
nice to see all my effort pays off some times 
K2e2vin
Senior Member
my auto tech teacher told me the drilled rotors are for drag racers and actually intentionally reduce contact area to reduce chance of wheel lock from high speed breaking, and are not for cooling(that is what the vents are for).
im guessing slotted rotors are so the pads will bite gradually and not all at once, or something of that nature.
im guessing slotted rotors are so the pads will bite gradually and not all at once, or something of that nature.
Your correct but that surface area also creates more heat and makes it harder to get rid of the gases that build up from over heating. Cross-Drilled and/or slotted rotors can give u better stopping power because they remain cooler. If there were useless and a waste of money, ferrari and porsche wouldn't use them on all there cars. But make sure u get a quality rotor
You are right too, to a certain extent. Ferrari and Porsche use them because 1) At 180+ miles an hour heat DOES build up very quickly(your Honda isnt gonna see 180 on the street), 2) they also have 13+ inch rotors and 4 pot calipers, so what they lose in surface area they make up by having huge rotors and excellent clamping.
So for a street Honda, get some blanks, unless you do some hardcore road course and/or endurance events.
cross drilling is for weight reduction
slotting is to shave off any glazing from the surface of the pad
once again...
drag racers are all about weight reduction...
lighter rotors = less rotational mass = faster acceleration = better times
slotted rotors are for eliminateing glazing of the pads
dont want gasses building up under hard braking???? dont get shity pads
GOOD pads will not gas out on you
cross drilling is about weight reduction... porsche and ferrari use them because they are using HUGE ass rotors (13 inches or bigger) if those were solid they would be heavy as fuck
its not about heat its about weight
but you are correct the size of their rotors more than makes up for the loss in surface area
It IS partly because of heat, it does let it vent better(this is only beneficial when you are racing for extended periods of time, again NOT for a street Honda). Most aftermarket pads have heat ranges, and if you are running cooler then what their heat range is, your braking are gonna feel like shit. If it didnt have to about heat, blank rotors wouldnt have the slots in between both of the sides. Cross drilling is for both weight AND heat.
89_starter
Member
Cross drilled reduce water fade, slotted reduced gas fade. Slotted are best for a daily driver.
Loco Honkey
Banned
Why the hell are any of you talking about outgassing? Todays carbon metallic pads contain NO organic material, therefore producing NO gas. Cross drilled rotors are a byproduct of '30's technology when brake pads and shoes were made out of leather. Cross drilled rotors crack. Slotted rotors wear pads. Proper bedding and pad selection will eliminate glazing. The reason Porsche and Ferrari use them is hype. Everyone, including everyone in this thread, thinks that cross drilled rotors = high performance. That's total and utter bullshit.
1) Cross drilled rotors have less swept area.
2) Cross drilled rotors have less surface area to absorb heat.
3) Cross drilled rotors have less mass to dissipate heat.
4) Cross drilled rotors crack and break (seen it twice at open track days).
1) Cross drilled rotors have less swept area.
2) Cross drilled rotors have less surface area to absorb heat.
3) Cross drilled rotors have less mass to dissipate heat.
4) Cross drilled rotors crack and break (seen it twice at open track days).
89_starter
Member
:sleep: HOLD ON! THATS IMPOSIBLE to not have any gas when friction and heat is preasent. Not every brake pad is carbon metallic. I think my instructor and An A.S.E book would just make up stuff. GAS FADE is when a very small "pocket" forms between the friction material and the rotor.THat is why slotted rotors are directional. to basicaly fan the gas away. thats why some tires are directional because if you reverse the the will suck in water instead of tread ther water out. WATER FADE is the the same only with water.
The main brins of brakes is to create heat. THAT IS HOW THEY WORK! FRICTION=HEAT and FRICTION MEANS STOPPING. AS A MATTER OF FACT MY INSTRUCTOR TELLS ME THAT DIPPLED ROTORS ARE THE BEST, lESS FADE, MORE SURFACE AREA.
