c-los350z

iTrader: (2)

Hello,

Ok so ill try to make this short. i ordered my rotors about 1 1/2 weeks ago needing brakes super bad. So i ordered rotors on eBay, which i got for $230.But when i received my rotors they were dimpled and not actually cross drilled. the look of the rotors are sweet but i was hoping to have drilled holes.

I don't know if i should keep them. what do you guys think? I'm afraid they wont cool the pads. Have you guys had cross dimpled/slotted rotors?

i have attached a picture of the rotor. Please help me out.

Thank you

davidv

iTrader: (2)

Looks good to me. Who make it?

Mike Wazowski

iTrader: (113)

if they are EBC, they are good to go. Some people complain of a swooshing noise from the dimples, but I had no problems with the noise on any of the 3 cars that I used them on.

reptile718

iTrader: (109)

So basically the dimples act like slots to vent the brakes. Don't see anything wrong with that, keep'em! I have drilled and slotted, not that much different from stock. Normally lasts a little longer under hard braking before it starts fading. If anything else they look good installed.

c-los350z

iTrader: (2)

ok so i have been reading that it is safer to have them dimpled than drilled. drilled are more likely to crack and get weak as opposed to dimpled.

My concern is will they work as well as drilled? what is the difference between drilled and dimpled?

By the way the company that makes these are Cquence Motorsports.

reptile718

iTrader: (109)

Mine are Rotora, been used and abused for a couple of years with no issues. Z is my DD BTW. Maybe im lucky???

adrianko43

iTrader: (2)

I took this from AP Racing's website:

The advantages of drilled rotors are:

1. Lighter weight than a grooved equivalent

2. Good brake bite due to:
A forcing pad material into the holes
B increased braking surface (many leading edges in theory)

3. allowing gases formed during the braking cycle to escape from the disc braking face.

Disadvantages.
-Discs can be prone to cracking unless care taken when bedding in
-The use of hard race pads(high friction level) can cause cracking giving the disc a limited life.

I don't know anything about dimpled rotors though.

terrasmak

iTrader: (8)

I would say , they are better than drilled

Adrians350Z

From what I've read the dimpled rotors give the look of a drilled rotor without the cracking issues.

Brake dust builds up in the dimples making them look black so it looks like there are little holes there.

!prjctmax!

iTrader: (10)

All of this is true on BBK because the discs are thicker and stronger, whereas OEM sized rotors that are drilled or slotted or dimpled are more prone to cracking because of their size, or lack of.

IMO, if it is a daily driver and you are getting stock sized rotors, then get blanks paired with good pads, and SS brake lines and you will be good to go!

c-los350z

iTrader: (2)

but will they cool the pads like drilled would? im going with Hawk hps pads btw

!prjctmax!

iTrader: (10)

I'm not really sure how the cooling would be done on these. With drilled, the air goes through them and with slotted the air goes out of them. These almost seem as if they just "clear" the pads and don't do as much "cooling" as the other two would.

Someone please correct me if I am wrong

BTW, good pads!

Mike Wazowski

iTrader: (113)

From EBC's website (the creators of the dimpled rotor)
http://www.ebcbrakes.com/rotorinfo.html

!prjctmax!

iTrader: (10)

http://forums.maxima.org/showthread.php?t=538717

Post #11 please

Mike Wazowski

iTrader: (113)

and where did he get his engineering degree? Just because someone posts something on a forum does not make it correct

!prjctmax!

iTrader: (10)

You kind of proved my point...just because a website "claims" something, doesn't mean that it is correct.

Not trying to argue, but that is the way I see it, and the guy that posted that is all about auto-x and every little aspect that it concerns.

Mike Wazowski

iTrader: (113)

I would believe more from a company that employees engineers and has conducted testing, than that of a person stating his opinion with no scientific/ real world evidence to back it up.

Thank being said, it all depends on personal preference. Not everyone is going to think the same thing about everything.

I have used
-stock rotors
-after market blank rotors
-dimpled rotors
-slotted rotors
-cross drilled rotors
-slotted/cross drilled rotors.

What do I prefer? slotted/ cross drilled rotors. My second choice? EBC dimpled rotors. They were like day and night on my OEM braking system.


OP, please remember that matching up your pads to the rotors and driving style is also very important.

!prjctmax!

iTrader: (10)

Well then I guess it is personal preference...

c-los350z

iTrader: (2)

well first of all i would like to thank everyone for theyre input on this topic. you guys have helped extremely. as always this forums site rocks

on that note i will keep my rotors as they do have the same style as ebc. the rotors are nice in person.

since i am going with hawk hps brake pads i shouldnt have a big problem anyway. PLUS from what i researched it looks like these rotors will last a little bit longer than than drilled.

thank you once again to all.

c-los350z

iTrader: (2)

would like to let everyone know that it has been about 300 miles with my new rotors and they are working great. thank you all again.