Slotted , drilled vs Oem rotors - Honda-Tech - Honda Forum Discussion

Suspension & Brakes Theory, alignment, spring rates....

Slotted , drilled vs Oem rotors

 
Old 06-27-2009, 11:13 AM
  #1  
Honda-Tech Member
Thread Starter
 
courtney42's Avatar
 
Join Date: Dec 2008
Location: Austin , Texas
Posts: 464
Default Slotted , drilled vs Oem rotors

I have a 94 del sol si. And a recent diagnosis has discovered some possible cracks in my front rotors. So it is time to get new ones.

I have read that slotted and drilled rotors are a complete waist of money for our little cars cause we would never get the components to a temperature where the slots and drills would actually make a difference.
Is this a true statement?

I need to get some new rotors and have been reading that some of the cross drilled models are impervious to cracking . This would make it worth a little extra money to me.

What is the best route to go and if it is aftermarket what are the best brands to use?

Discussion?
courtney42 is offline  
Old 06-27-2009, 01:37 PM
  #2  
I serve phở for my babies
iTrader: (2)
 
ohsnapzafingcu's Avatar
 
Join Date: Jun 2005
Location: OKC, OK, USA
Posts: 3,820
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by courtney42 View Post
I have a 94 del sol si. And a recent diagnosis has discovered some possible cracks in my front rotors. So it is time to get new ones.

I have read that slotted and drilled rotors are a complete waist of money for our little cars cause we would never get the components to a temperature where the slots and drills would actually make a difference.
Is this a true statement?

I need to get some new rotors and have been reading that some of the cross drilled models are impervious to cracking . This would make it worth a little extra money to me.

What is the best route to go and if it is aftermarket what are the best brands to use?

Discussion?
i've had my brembo slotted and drilled rotors for a year now, i've worn the pads half way down and been to 2 autox events.. and i drive my car pretty hard on the street..

they are beginning to crack, and if i buy another set of rotors they will either be just slotted or brembo blanks...


drilled rotors are worthless
ohsnapzafingcu is offline  
Old 06-27-2009, 02:18 PM
  #3  
Honda-Tech Member
 
kulo's Avatar
 
Join Date: Mar 2007
Location: suffolk
Posts: 1,776
Default Re: Slotted , drilled vs Oem rotors

brembo blanks

or powerslot cryo gen treatment?
kulo is offline  
Old 06-28-2009, 09:19 AM
  #4  
Honda-Tech Member
Thread Starter
 
courtney42's Avatar
 
Join Date: Dec 2008
Location: Austin , Texas
Posts: 464
Default Re: Slotted , drilled vs Oem rotors

Why are slots ok but drilled suck? I want to get some that will Not crack.

Where did you get your blanks?

Any more input on this topic?

Last edited by courtney42; 06-28-2009 at 09:29 AM.
courtney42 is offline  
Old 06-28-2009, 09:43 AM
  #5  
I serve phở for my babies
iTrader: (2)
 
ohsnapzafingcu's Avatar
 
Join Date: Jun 2005
Location: OKC, OK, USA
Posts: 3,820
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by courtney42 View Post
Why are slots ok but drilled suck? I want to get some that will Not crack.

Where did you get your blanks?

Any more input on this topic?
the drilled part will start to crack and eventually ruin the rotor, it's also very unsafe..

slotted usually don't crack. but again the slots are less surface area for the brake pads to bite..

where i live the rain doesn't drain that well so i have a piece of mind with the slots so the water has a place to go when i'm using my brakes.. i'm not sure if it actually works or not but i brake fine when the water is up to my doors
ohsnapzafingcu is offline  
Old 06-29-2009, 05:38 AM
  #6  
Honda-Tech Member
 
FerreiraCompetitions's Avatar
 
Join Date: May 2007
Location: Banbury, UK
Posts: 264
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by ohsnapzafingcu View Post
but again the slots are less surface area for the brake pads to bite..
Untrue statement. Actually slotted disks do increase initial bite due to having more leading edges for the pad to bite. It although does increase your wear rates on the pad (exactly due to having more bite)

Drilled disks - those are just for show these days. 30+ years ago, it was usefull because of the gas layer pads would make. These days pads dont make so much gas so a slotted or dimpled design is enough. Drilled or slotted disks we never designed for cooling.

FerreiraCompetitions is offline  
Old 06-29-2009, 04:14 PM
  #7  
Honda-Tech Member
Thread Starter
 
courtney42's Avatar
 
Join Date: Dec 2008
Location: Austin , Texas
Posts: 464
Default Re: Slotted , drilled vs Oem rotors

Looks like i will be getting some blanks then. I hope i can find ones that will not crack.
Any one know of a good brand? Brembo as stated above are well known. Any others?
courtney42 is offline  
Old 06-30-2009, 12:16 PM
  #8  
Honda-Tech Member
iTrader: (3)
 
Charlie Moua's Avatar
 
Join Date: Feb 2002
Location: MN
Posts: 12,562
Default Re: Slotted , drilled vs Oem rotors

to simply put it = go with blanks, either oem, brembo or even autozone. Rotors are wear items so go with the cheapest, spend more money on pads & tires if you want to stop better.


Also learn how to search using key words.
Charlie Moua is offline  
Old 06-30-2009, 12:42 PM
  #9  
Honda-Tech Member
 
Join Date: Dec 2008
Posts: 71
Default Re: Slotted , drilled vs Oem rotors

autozone blanks 20 bucks a piece. warranty!
trifenix is offline  
Old 06-30-2009, 05:07 PM
  #10  
Honda-Tech Member
 
Join Date: Jul 2006
Location: U.S.
Posts: 336
Default Re: Slotted , drilled vs Oem rotors

lol... i have powerslots on the front of my sedan (teg brakes) and they seem to do fine. I've never had fade (probably never pushed them far enough) I have been very hard on them at 2 autox's and they performed great. but for the price i'll probably just go with brembo blanks when they're due. i'm getting brembo blanks for my rear disks soon.

like Charlie Moua said... brakes are consumables. so if you track your car a lot you might just want to go with the cheapest rotors available.

also... I'm almost positive ive read here on HT before that brembo never made drilled rotors for hondas, only slotted. so if you see crossdrilled and slotted brembos, they have been drilled since they have been cast! Bad deal. the high end exotic cars that have drilled rotors actually have the holes cast into the rotors=no cracking problems like the post cast drilled rotors.
jtmartin96civic is offline  
Old 06-30-2009, 10:41 PM
  #11  
Honda-Tech Member
Thread Starter
 
courtney42's Avatar
 
Join Date: Dec 2008
Location: Austin , Texas
Posts: 464
Default Re: Slotted , drilled vs Oem rotors

Has anyone ever heard of the Brembos cracking? If so i will just get the cheap ones from auto zone.
courtney42 is offline  
Old 07-03-2009, 06:08 PM
  #12  
Honda-Tech Member
 
Join Date: Jun 2009
Posts: 240
Default Re: Slotted , drilled vs Oem rotors

I love the internet, so much useless info.

If you think that drilled slotted has no effect, then why put them on super cars? In another post a few weeks back, someone had stated that drilled and slotted is worse than solid, if that's the case, why would formula 1 and other race vehicles including super cars use drilled and slotted? I mean, people claim that drilled is bad, yet the ALL higher end cars use it. It has nothing to do with "only used back when gas builds up". It does help cooling. If your a retard, and you slam on your brakes and lock them up, of course the holes will just hold the heat in. BUT, if you brake properly, those holes get air through them cooling the disk better. ALSO, why you do you think that rims have holes in the side? Its more than just light weight, they have open sides to allow air in to cool your rotors, otherwise they would heat up and take forever to cool down, hence why cars NEVER have solid rims, even if it is the lightest material possible.

Yes the holes help with breaking with more "bite" and yes they help with cooling, but because of added grip and cooling, they tend to last less than other slotted or solid.

If you want performance that will last, go with some aftermarket slotted without the drilled. That will grip better, and cool better than solid OEM, but wont grab as hard as drilled. Many people here need to stop posting bad info to others.
Del Namco Solo is offline  
Old 07-03-2009, 07:15 PM
  #13  
Honda-Tech Member
iTrader: (1)
 
DrZFiNeSt's Avatar
 
Join Date: Sep 2007
Location: CT
Posts: 3,189
Default Re: Slotted , drilled vs Oem rotors

Go with blanks and you won't regret it.
DrZFiNeSt is offline  
Old 07-03-2009, 09:09 PM
  #14  
Honda-Tech Member
 
gringotegra's Avatar
 
Join Date: Feb 2005
Location: Vancouver, WA, USA
Posts: 8,750
Default Re: Slotted , drilled vs Oem rotors

I bought BAER Slotted/drilled rotors last year and withen about 6 months they looked like this :





gringotegra is offline  
Old 07-04-2009, 01:04 AM
  #15  
Honda-Tech Member
Thread Starter
 
courtney42's Avatar
 
Join Date: Dec 2008
Location: Austin , Texas
Posts: 464
Default Re: Slotted , drilled vs Oem rotors

Ouch ! That's exactly what i want to avoid. lol
Seems like the consensus is blanks are the best boys. thanks
courtney42 is offline  
Old 07-05-2009, 12:40 PM
  #16  
Honda-Tech Member
 
FlatBrokeHatch's Avatar
 
Join Date: May 2003
Location: Upstate/Central, NY, usa
Posts: 5,048
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by Del Namco Solo View Post
I love the internet, so much useless info.
Liiiiike...

Originally Posted by Del Namco Solo View Post
why would formula 1 and other race vehicles including super cars use drilled and slotted?
Please tell me what F1 car that you know of that uses drilled and slotted brakes.



Originally Posted by Del Namco Solo View Post
Many people here need to stop posting bad info to others.
When you're right...you're right.
FlatBrokeHatch is offline  
Old 07-06-2009, 10:47 AM
  #17  
Honda-Tech Member
 
Join Date: Dec 2008
Posts: 71
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by Del Namco Solo View Post
I love the internet, so much useless info.

If you think that drilled slotted has no effect, then why put them on super cars? In another post a few weeks back, someone had stated that drilled and slotted is worse than solid, if that's the case, why would formula 1 and other race vehicles including super cars use drilled and slotted? I mean, people claim that drilled is bad, yet the ALL higher end cars use it. It has nothing to do with "only used back when gas builds up". It does help cooling. If your a retard, and you slam on your brakes and lock them up, of course the holes will just hold the heat in. BUT, if you brake properly, those holes get air through them cooling the disk better. ALSO, why you do you think that rims have holes in the side? Its more than just light weight, they have open sides to allow air in to cool your rotors, otherwise they would heat up and take forever to cool down, hence why cars NEVER have solid rims, even if it is the lightest material possible.

Yes the holes help with breaking with more "bite" and yes they help with cooling, but because of added grip and cooling, they tend to last less than other slotted or solid.

If you want performance that will last, go with some aftermarket slotted without the drilled. That will grip better, and cool better than solid OEM, but wont grab as hard as drilled. Many people here need to stop posting bad info to others.
understood but you are comparing F1 race cars to daily driven integra? rotors used in race cars are replaced after every race....do most integra owners have big name sponsors to foot the bill? do integra owners race everyday? can most integras even reach F1 speeds safely on the street?

If you got a dedicated track car and got money then go ahead and get the full x drilled slotted and just replace them when they crack. most people just get them because they look nicer not for the use. for everyone else blanks are just fine, its all about the pads.

Lots of guys at events wont even brake 100% because they dont wanna wear their expensive pads and x-drilled BBK rotors cuz of $$$. My rotors were $20 bucks and i run them till they smoke and are blue and just swap them out when done.
trifenix is offline  
Old 07-06-2009, 05:30 PM
  #18  
Honda-Tech Member
 
Bro. Darkness's Avatar
 
Join Date: May 2007
Location: if she celabite then we'll buy a bit, OK
Posts: 795
Default Re: Slotted , drilled vs Oem rotors

very interesting thread...its probly about time to replace pads and rotors on my piece
Bro. Darkness is offline  
Old 07-07-2009, 12:31 AM
  #19  
Vietnamese!
 
ALLxMOTOR EG's Avatar
 
Join Date: Oct 2008
Location: Orange County, CA
Posts: 10,263
Default Re: Slotted , drilled vs Oem rotors

Blanks rotors are the way to go.
ALLxMOTOR EG is offline  
Old 07-09-2009, 08:10 PM
  #20  
Honda-Tech Member
 
Meighty7's Avatar
 
Join Date: Dec 2006
Location: Chesapeake, VA, USA
Posts: 94
Default Re: Slotted , drilled vs Oem rotors

Pretty helpful, I gotta replace my brakes in the next few days... gonna go blank or slotted with good pads any suggestions on pads was lookin at hawk and ebc
Meighty7 is offline  
Old 07-09-2009, 08:14 PM
  #21  
Junior Member
 
sofakingwetadit's Avatar
 
Join Date: Jun 2009
Posts: 12
Default Re: Slotted , drilled vs Oem rotors

i like drilled and slotted bc break dust is a pain to get off your rims 4 days after you clean it. my suggestion drilled and slotted, look better, lighter, and get good pads, cheap pads is cheap breaking.
sofakingwetadit is offline  
Old 07-09-2009, 08:43 PM
  #22  
Honda-Tech Member
 
95civhb's Avatar
 
Join Date: Oct 2005
Location: Canada
Posts: 761
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by Meighty7 View Post
any suggestions on pads was lookin at hawk and ebc
???

interested as well..
95civhb is offline  
Old 07-10-2009, 12:15 PM
  #23  
BCICAN
 
Dunc's Avatar
 
Join Date: Jan 2005
Location: Cincinnati, OH
Posts: 3,206
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by 95civhb View Post
???

interested as well..
I'm using the Hawk HP+....excellent pad in my opinion.
Dunc is offline  
Old 07-11-2009, 09:13 AM
  #24  
Honda-Tech Member
 
accord_raffi's Avatar
 
Join Date: Jun 2007
Location: Westford, MA
Posts: 1,292
Default Re: Slotted , drilled vs Oem rotors

stay away from the Hawk HPS pads
accord_raffi is offline  
Old 07-11-2009, 09:43 AM
  #25  
Honda-Tech Member
 
Join Date: Jul 2006
Location: U.S.
Posts: 336
Default Re: Slotted , drilled vs Oem rotors

Originally Posted by Dunc View Post
I'm using the Hawk HP+....excellent pad in my opinion.
Are you DD'ing this pad? I'm considering it soon.


Originally Posted by accord_raffi View Post
stay away from the Hawk HPS pads
I hate it when I read posts like this on here...

No reasoning, no setup posted, no driving style, no purpose, not a single detail... just because. Explain your reasoning or you'll just be another naysayer.

I've never heard a single bad thing about any Hawk pad.
jtmartin96civic is offline  

Thread Tools
Search this Thread
Quick Reply: Slotted , drilled vs Oem rotors


Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: