$115 later...

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Mike Jones Who?

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man that is cheap, just for the slotted brakes alone is 86 bux a piece for my outlander. what a good deal.
 

ManySHOs

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cross drill=cracks easily

EDIT: Make sure that you keep an eye on them over time. I wouldn't do any track/agressive driving with them.

Ian
 

stevemainian

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ManySHOs said:
cross drill=cracks easily

EDIT: Make sure that you keep an eye on them over time. I wouldn't do any track/agressive driving with them.

Ian

I cant help but laugh at your post. :rofl:

This is the funniest thing I have read all day.
 

ManySHOs

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stevemainian said:
I cant help but laugh at your post. :rofl:

This is the funniest thing I have read all day.


ehhh...ok then....If you regard me as a comedian then I won't waste my time explaining. Instead, I invite you to read what a brake expert (Todd Cook) has written:

Q: I noticed you said drilled rotors are an option, why do you not recommend them? Even Porsches use them, but I’m told they’re better because they are cast into them.
A: Drilled rotors, aside from the minimal weight savings offered, don't do as much to enhance the kits performance as some people like to believe. In fact they can cause more harm than good. The drilling of the rotor is to mainly remove the gasous/particle build up developed by the friction materials against the rotor surface more than cool the iron. Problem is that when the air rushing through these holes is significantly cooler than the rotor temperature we begin to develop thermal stress cracks in the iron. These start as small stress cracks, but over time become larger and can lead to major cracking problems. While the outer surface of the hole is chamfered to help this, the inner area of the center vaneis not. * Don't be fooled by some of the advertising in this regard. TCE recommends gas slots and supplies nearly all kits this with them. This is to help 'vent' the pad and create a self cleaning effect of the pad as the rotor passes over it. Keep in mind that either of these (drilled or slotted) will lead to faster pad wear and more dusting. As for the Porsche rotors being cast; that’s a myth. They are drilled like all others, and given the completely different weight bias of a rear or mid engine car the requirements of the brake system differ then that of most FWD applications also.

Source:
http://www.tceperformanceproducts.com/faqs.html

I've seen enough cracked rotors to know that this isn't a myth. Do a google search for "crack + cross drill rotor"

Ian

TCE SHOstopper 4 piston Wilwood BSL calipers, Hawk HPS brake pads, 91 rear brakes, bias plugs...all this and never satisfied/constantly looking for better rotors, calipers, etc. I don't know everything but I have some experience with brakes...
 

1stSHO

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I LOVE YOU Steve!!!!!!! :rofl: :rofl:

Ive had Cross drilled rotors on my Mustangs, Ive drove them hard with no cracking. Only thing those things did for me is improve my braking 10 times over.

Those are awsome, I need to get some for my SHO also. :thumb:
 

ManySHOs

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stevemainian said:
Thats great, but the rotors arent made of iron... Theyre made of zinc. :biggrin:

Almost all brake rotors are made of iron. No brake rotors are made of zinc. However, some brake rotors are zinc plated. If you click the link that I posted, there's more info on zinc plated brake rotors.

Ian
 

stevemainian

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I'm not saying they cant crack.. The theory makes sense, but personally I have never ever seen proof of it. And if you have, thats great. I appreciate your input. Im a automotive tech myself, and have never seen it happen, but I can see how it has happened. Im pretty confident in these rotors though, and thats why I spent the money I did for them.

However, you must remember that link you provided is only opinions from that company. Some things people will agree and disagree with.
 

ManySHOs

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stevemainian said:
I'm not saying they cant crack.. The theory makes sense, but personally I have never ever seen proof of it. And if you have, thats great. I appreciate your input. Im a automotive tech myself, and have never seen it happen, but I can see how it has happened. Im pretty confident in these rotors though, and thats why I spent the money I did for them.

However, you must remember that link you provided is only opinions from that company. Some things people will agree and disagree with.

Fine, here's another (with pictures-this proves that it isn't a "theory or an opinion" as you put it:

http://www.superchargersonline.com/content.asp?ID=98

...And another mention on the Tire Rack website:

http://www.tirerack.com/brakes/brakes.jsp?make=PowerSlot&model=Pro+Stop+Rotor

I know Car and Driver One Lap drivers who started races with cross drilled rotors and needed to switch to solid rotors because the cross drilled rotors were cracking after one track session. Many of my friends are track junkies and they've also witnessed broken cross drilled rotors. This is not a theory or a conspiracy.

I wish you the best of luck with your new purchase. I still maintain that for your safety and those around you that you remain vigilant and inspect these rotors from time to time. They are not the heavy duty end-all-be-all of brake rotors.

Ian
 

Shoaz

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It's pretty common knowledge among road racers that drilling rotors increases the probability of cracking. For racing this isn't too big of a deal since the rotors get replaced frequently, anyway (sometimes because they've cracked).

TCE is quite reputable for performance braking, but if you don't believe Todd, then check StopTech's site or, as suggested, just do a google on relevant terms and see what you come up with. Anybody who has drilled rotors should do themselves the favor of frequent inspections for cracks around the holes.

These days drilling is mostly for looks. But if you were looking for performance you wouldn't have 10.9" brakes, anyway, so more power to ya.
 

Hack

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ssb_why.jpg


Just a sample of what cracked cross drilled rotors look like. The image is from a Dodge related vendor. I have personally experienced this on cross-drilled stock size SHO rotors. They will still work fine, just inspect them often as Shoaz mentioned.
 

Dave Kegel

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If you use them hard enough, drilled rotors will crack. It's not a question of "if", only "when". If you're only using them for normal or even aggressive street driving they'll probably be fine. But repeated track time will get them hot enough that they crack, usually when they cool back down. A couple of us have had cross drilled 13" rotors crack. Mine cracked badly at Blackhawk Farms during the convention two years ago and I ended up sitting out all but the first session of track day. It truly sucked. I also know someone who's expensive cross drilled, two piece, 13" Baer rotors cracked, although it took quite a few track sessions before it happened to him.

So... They're fine for the street but keep an eye on them if you open-track the car.

Dave Kegel
 

stevemainian

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Which is why I thought it was funny to read what he posted. Extreme abuse is usually what leads to this. I dont think ill be doing braking stops from 200mph to 60 any time soon.
 

SuperG

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Steve, good find for a great looking rotor. So, if you decide to beat the crap out of them, and they begin to crack, then for only $115 bucks you can replace them...not bad!!
 

Justin101

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so did they fit? and also did u pay $115 for all four rotors or just the front ones? cause i see on ebay they have Front|Rear Rotors for $175....
 
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