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-   -   Cracks in drilled rotors-when to replace rotor? (http://forums.pelicanparts.com/porsche-911-technical-forum/958197-cracks-drilled-rotors-when-replace-rotor.html)

sandiego 06-01-2017 01:37 AM

Good suggestions.
I have the fog lights removed but boxed in everything in front of my 2 fender mounted oil coolers (one stock, one Elephant Racing)to get the most air thru them. Car runs cool even in SoCal with my 3.6, so I may have to rethink where the air is directed.

HaroldMHedge 06-01-2017 07:22 AM

More brake cooling. . . 993 air deflectors option?
 
The 993 air deflectors is a great option along with the rotor deflector plates. I've used both in the past and they work. The only difference the use of longer blots for the rotor/deflector plate mounting so that there was thread engagement.

More brake cooling. . . 993 air deflectors option?

sugarwood 06-01-2017 05:05 PM

I wish I had cracks in my drilled rotors.
I am looking for any excuse to replace them.
I would never want to drive my car while wondering if the next brake press will be the one that shatters the rotor.
If it were me, I would fork over the $70/ea and replace the rotors and sleep and drive easy.

Walt Fricke 06-03-2017 03:54 PM

Sugarwood - where did you get the idea that your uncracked drilled rotors were suddenly, while driving home from work, shatter? Not going to happen. These things grow. If they grow enough for the surface to displace, you will instantly know it. If you have been paying attention, you will recognize why a thump thump thump developed with even light braking.

Our 2007 Turbo has its original drilled rotors at about 40K miles. No signs of cracking. To be sure, it sees maybe one autocross a year (AX isn't hard on brakes), and on a couple of occasions I used it to give orientation rides at a corporate event at a track (digital speedometers are cool - you can actually glance at them).

sandiego 06-11-2017 05:22 PM

Attached is a photo of my cracks.http://forums.pelicanparts.com/uploa...1497230512.JPG

Walt Fricke 06-14-2017 08:30 PM

Wouldn't bother me - it is cracks from the outermost hole to the edge which say it is time to get a new rotor.


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