I am going to replace the rotors on my 79' and was wondering what types you guys have some experience with. I want to put in some 'nice' ones and for the most part the dollars don't matter. Slotted, vented, drilled, colored, etc.

I like the looks of the drilled ones but do the vented or sloted ones perform better? Does anyone really know?

Please HELP me.

After this I will need help with some different wheel styles to show off those fancy rotors :-) I would like the black center spoked with chrome rims. Seen in alot of the RX-7 literature that I have. Any help with that would be great too.

Thanks.

 

drilled/vented/slotted are a waste of money

 

I like slotted... but not drilled. It's all about personal preference.


I am ordering Power Slots as we speak.

 

Well I bought plain old OEM rotors from victoria british. Repack the bearings and your off, $100.

 

you really wont feel a difference on the street. vented/slotted and what not are made to prevent cracking or warping rotors. on the track, the rotors get to extreme temperatures and expand. with slotted/vented, they can expand into the slots or vents instead of outward. for normal street driving, they look good, yes, but you wont feel any difference.

 

The bullcrap is strong in this thread...

Firstly, vented discs are where the two braking surfaces are seperated by a series of fins. The extra surface area allows a vented disc to cool more efficiently than a solid disc and the fins help circulate air through the inside of the disc. These come in the front of our cars standard so how can they be a waste of money?

The slots in a slotted disk are designed to stop the buildup of gas and dirt which can occur between the disk and pad surface. They have nothing to do with cracking, warping or expansion.

Cross drilling is done to improve cooling, reduce weight as well as perform somewhat of the same function as a slotted disk.

 

yes cooling is the purpose of the vented..... but cross-drilled rotors DO have something to do with cracking. maybe not on the street, but in roadracing. who cares about the street anyway, no ones gonna heat up rotors much on the street.

 

Ok I ment to say cross drilled/and slotted, are not good,they are KNOW to crack badly..
I know what vented are,I dont know why I put that..

 

Revhed- an informative response, i agree with your comment. Some of the views are so weak and inaccurate they morelikely come from a dung bettle not the bull.

 

HOW CAN U SEE THE ROTORS THEY ARE IN TEH ENIGNE?

 

I hope you're not serious? If you would have read the thread, you would have learned that this is about BRAKE roters.

 

True... I agree with your post for the most part.


But I am ordering the slotted ones because I autoX about every 2-3 weeks... it's something I LOVE to do. And from personal experience... stock rotors just can't handle it.

 

im not serious. just postwhoring.

 

like this?

 

no

 

like this

 

That's alright. I was just pointing what these terms people were throwing about actually mean. Well desgined slotted discs are probably a good investment for auto-x.

 

mo too

 

Alright, I halve to add to this because I autocross, too. The problem I have (not with the Mazda yet) is warpage. Autocross and other types of hard driving warps rotors. Slotted or drilled rotors don't tend to warp as much.

Postwhoring is allowed, isn't it?

 

The performance benefit of slotted or cross-drilled rotors is about as controversial a topic as you'll find.

Regular Rotor Pros: Cheaper, and preserve more thermal mass, so they can absorb more braking energy without getting as hot. Also, more crack resistant than cross-drilled under extreme use.

Cross-Drilled Rotor Pros: Look cool. Look cool. Look cool. (had to say it three times, because it's the most important benefit) Allow pad gasses to exit (not much of an issue with modern pad compounds). Lighter weight for the same size rotor (which is good if your rotor was oversized, but bad if its undersized). Cools faster (see cracking, above).

Slotted Rotor Benefits: See all the cross-drilled benefits and divide by 2

Lastly, its interesting to note that many road racers who drive cars that come from the factory with cross-drilled rotors revert to the solid ones for track use.