Wattupwattup! I'm considering prepping my brakes for a motor swap. So it got me thinking, which is better cross drilled or slotted? I was thinking if you cross drill you remove brake surface which could hinder brake performance. Slotted can help removal of dust which can be better for performace. If I got my facts twisted someone pleasse add on! So what and why is your preference?

 

All slotting and drilling of the rotor does is allow for faster cooling of the rotor. Either one will accomplish that. So, it is really simply a matter of what style you like better.

I have read of instances where drilling rotors which were not created to be drilled can cause premature failure of the disc. I have not seen instances of slotting doing the same. So, for my money slotting is the only way to go.

Also, you want to make sure to buy a rotor that was engineered and designed for either slotting or drilling. If you buy something off of Ebay or somewhere else and they used a standard blank rotor to slot and drill...it will be fragile and will warp or crack under use.

 

gotcha. Thanks for the info, much gratitude. Guess slotted is the way to go. To me cross drilled looks sweet tho, Ah well.

 

id go slotted maybe brembo or ebc, willwood.

 

What does looks sweet have to do with anything ? Fact is unless you actually race your car on a track or drive like a( moron on the street ) good quality disks , and good pads are usually all the upgrade needed for a simple motor swap . slotted and drilled rotors can shorten pad and disk life.

 

if you are goin with either get slotted. cant remember where i read it but it said with drilled rotor the head goes to the drill holes and causes cracks in the rotor. and slotted has the heat travel out

 

Chill my nucca. Sometimes people get aftermarket parts not just for performance upgrade but for visual upgrades as well. But yea I plan on going to track even though I have 0 experience on tracks. On the street going faster than normal aint too bad as long as your car can handle it and the driver. I'm not trying to be reckless as I know firsthand all about life and death in car accidents.

 

People seem to recommend the slotted version more. So, majority rules. Thanks for the info and input. Your efforts are all appreciated. One.

 

I would have to agree with bkk but it is your car so do as you wish, my two cents is make sure that you don't skimp on the parts if you buy something that was drilled after the rotors were cast the drilling compromises the integrity of the metal and if you do drive the car hard the disc can crack or chip. also you were correct in saying that both drilled and slotted rotors do decrease breaking surface that is why real racers do NOT use them you will only find them on lambo's and Porsche's for the curb appeal. If i were you I would get rear discs if you do not already have them, they give you a much better curb appeal as well as much better breaking then drilled/slotted rotors and the swap is about the same price. best of luck with what ever you end up doing man.

 

the question was which is better ? neither , but if you like the looks of either , go for it , life spans on both style rotors and pad will be shorter, again not trying to flame anyone , just a comment about drilled look cool , again whats cool got to do with which is better ? personally i like good quality rotors with EBC green pads for a street car with occasional track use

 

well said speedoking

 

Neither. Your regular rotors are better. RACE cars use them to diminish heat as it outweighs the loss of surface. on a street car you are retarded if you use them. Only person you'll impress is the kid with the lime green paint, 2' high aluminum spoiler, and spinning hubcaps.

 

I remember there being a special on speedtv on Ferrari and in one of the interviews they asked about the drilled rotors that the Ferrari's came with and the performance of the drilled rotors and why they came on them from the factory. The marketing CEO for Ferrari said, "It helps sell the vehicle". Point being, IMO, if you have a good set of brake pads and some oe rotors, you wont have any problems. I highly doubt you race your car at all to the point that you NEED drilled rotors or any kind of aftermarket rotor for that instance.

 

think thats what i said quality pads + good rotors

 

Thanks for clearing that up, apparently, i cant read.

 

no problem , but hey I am just and old guy !

 

Whats being old have anything to do with it? I was stating something that i thought was pretty fascinating, then stating that good pads and rotors are the way to go. I bet you didnt know that OEM rotors from Honda are brembo blanks.

 

don't hold your breath on that , and brembo like all other large companies , outsources parts like everybody else .

 

I bet you didn't know they buy from Nanjing Brake System Co.

 

Sure thing old man.

 

Don't hold his breath on what?

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/why-blank-rotors-better-than-cross-drilled-slotted-1437513/

 

hey don't believe me log on to brembo. and see for your self
http://www.brembo.com/ENG/AboutBremb...oup/BremboAsia

But hey what would an mechanical engineer know anyway whats with the link just say blanks are better than slotted or driller , but everyone here has been saying that

 

The link was for the OP. What is your link supposed to show? BTW no one gives two ***** if you are a mechanical engineer.

 

lol this guy right here=
No one is asking you anything. I simply stated that brembo supplies rotors to Honda and Acura as well as other big car manufactures. And FYI, Brembo is part owner of Nanjing Brake Systems, so technically, Brembo's rotors are made by Brembo.

 

Na man your wrong, he's a mechanical engineer. He knows all.