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Anyone running Cross-drilled & Slotted Rotors...

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Old Mar 31, 2010 | 01:29 AM
  #31  
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Got'em on my Corvette but I'll be damned if my Jeep will ever travel fast enough to need that kind of braking improvement.

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Old Mar 31, 2010 | 01:49 AM
  #32  
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Originally Posted by Throttle Jockey
they are supposed to disappate heat faster. not really sure if they are worth the money for the application, ya know? i mean it's not a vette so high speed braking is not normally an issue with the XJ.
The problem is at the edges of the little bores. When you break hard and the rotor heats up, these edges cool down faster than the solid area and create stress thru shrinking when cooling more than the solid part. That's what makes these things crack. On slotted ones, yes, they dissipate water and gasses better, and wear on your pads faster. But for off-roading, they'd be less than optimal. The best upgrade for our application is a larger dia solid rotor and maybe dual- or triple piston caliper. But, I seriously doubt, anyone would like that kind of stopping power on a Jeep, if so, you'd have to go all the way and put slicks or Hoosiers on it and Porterfield pads...
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Old Mar 31, 2010 | 06:21 AM
  #33  
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Originally Posted by Soldat
Probably a reason why they aren't standard on vehicles.
you must not pay to much attention to German vehicles........
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Old Mar 31, 2010 | 07:50 AM
  #34  
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OK, so I've been sold on sticking with stock Advance Auto, AutoZone, or Pep-boys rotors, as someone said earlier.."use the money on making it taller", which is next..a RE 3.5 or 4.5 lift.
Now pads: Semi-metallic, Ceramic, Kevlar, Organic, what is the consensus on them?
BTW, thanks guys for all the input/advice...
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Old Mar 31, 2010 | 08:08 AM
  #35  
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I have them on my Benz, but I see no need to run them on my XJ. In my experience with my Benz, the pads do not wear any faster than a normal rotor would.
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Old Mar 31, 2010 | 08:15 AM
  #36  
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For a vehicle like the XJ cross drilled and slotted or even just slotted rotors are a waste of money!

they are designed to dissipate heat fast under extreme braking.. and its not true about them cracking that just hear say ive been running numerous cross drilled and slotted rotors on my evo for 3 years with race compound pads running SCCA events or just beating it up on backroads.... and ive never had a problem.. but as i was saying its completely unnecessary for an XJ you will never brake that much and that hard in a car like this to actually get any use out of them it will be pure show on an XJ and u cant even see the rotors...... pointless.... just get a regular rotor and spend your money on something more useful!
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Old Mar 31, 2010 | 08:18 AM
  #37  
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Originally Posted by Tural
if no one said they use them, that means that there's a reason. unless you're driving on 35's at 100 mph and deer keeps popping in front of you, there's no reason to stop on a dime. however, if that's the case, get a 50 cal. mount with digital "identify and destroy" setup. it will save you brakes.
i myself use stock rotors with vented pads. works wonders for me.
Originally Posted by Mitsuboost30
For a vehicle like the XJ cross drilled and slotted or even just slotted rotors are a waste of money!

they are designed to dissipate heat fast under extreme braking.. and its not true about them cracking that just hear say ive been running numerous cross drilled and slotted rotors on my evo for 3 years with race compound pads running SCCA events or just beating it up on backroads.... and ive never had a problem.. but as i was saying its completely unnecessary for an XJ you will never brake that much and that hard in a car like this to actually get any use out of them it will be pure show on an XJ and u cant even see the rotors...... pointless.... just get a regular rotor and spend your money on something more useful!
point taken!
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Old Mar 31, 2010 | 09:10 AM
  #38  
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Originally Posted by DaRock
I'm curious to know who's running a daily driver with cross-drilled & slotted rotors like these from Summit:
http://www.summitracing.com/parts/SUM-DSEP-5115L/
along with ceramic pads like these, also from Summit:
http://www.summitracing.com/parts/HWK-HB210Z-677/

What are your opinions on performance, stopping distance, and overall improvements compared with stock.
I'm pulling the trigger on new cross-drilled & slotted, or just slotted rotors along with Hawk Performance Ceramic pads either way.
I just want a first hand opinion form guys here who have "actually" used or are using them now, and not an opinion from a googled web page, I've read enough of them.
If you are running either rotor above what kind is it and where did you purchase them.
~Thanks
Yes I have run them, BUT in my Trans Am for SCCA competition
unless you race your jeep in some sort of road race you will not see any benefits
see this thread

https://www.cherokeeforum.com/f2/wha...k-these-39531/
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Old Mar 31, 2010 | 09:37 AM
  #39  
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Originally Posted by DaRock
OK, so I've been sold on sticking with stock Advance Auto, AutoZone, or Pep-boys rotors, as someone said earlier.."use the money on making it taller", which is next..a RE 3.5 or 4.5 lift.
Now pads: Semi-metallic, Ceramic, Kevlar, Organic, what is the consensus on them?
BTW, thanks guys for all the input/advice...
semi-met. on solid rotors. let's think of it this way, for example: those big work trucks you see carry a ton of weight, and they all use semi-mets because when you have extra weight added to the vehicle, you are not going to wear them out as fast, and helps with braking. when we add the bigger tires, lift parts, heavy bumpers, tire carriers, winches, etc etc etc... you are adding a lot of weight. you could run ceramics, but even on a solid pad, with the extra weight, you are going to wear them down much faster. as far as i am concerned, organic pads are for hippies: haven't hear anything other than they perform like ceramics. and haven't heard much in the ways of kevlar pads either, so anybody could weigh in on those.
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Old Mar 31, 2010 | 12:20 PM
  #40  
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Originally Posted by DaRock
OK, so I've been sold on sticking with stock Advance Auto, AutoZone, or Pep-boys rotors, as someone said earlier.."use the money on making it taller", which is next..a RE 3.5 or 4.5 lift.
Now pads: Semi-metallic, Ceramic, Kevlar, Organic, what is the consensus on them?
BTW, thanks guys for all the input/advice...
I vote ceramic. Thats what I have on mine, haven't had a single complaint.
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Old Mar 31, 2010 | 12:51 PM
  #41  
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Originally Posted by Mitsuboost30
For a vehicle like the XJ cross drilled and slotted or even just slotted rotors are a waste of money!

they are designed to dissipate heat fast under extreme braking.. and its not true about them cracking that just hear say ive been running numerous cross drilled and slotted rotors on my evo for 3 years with race compound pads running SCCA events or just beating it up on backroads.... and ive never had a problem.. but as i was saying its completely unnecessary for an XJ you will never brake that much and that hard in a car like this to actually get any use out of them it will be pure show on an XJ and u cant even see the rotors...... pointless.... just get a regular rotor and spend your money on something more useful!
Well, stopping from 80mph to 0mph heats and fades the heck out of mine... the truck actually starts stopping worse towards the end of the ordeal and I have to start grabbing lower gears to help brake.
Also, husteling thru waskhes, service roads will fade the brakes to uselessness...

Any one that says that better brakes are a waste of money needs a reality check.
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Old Mar 31, 2010 | 02:02 PM
  #42  
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Originally Posted by Mike H.
Well, stopping from 80mph to 0mph heats and fades the heck out of mine... the truck actually starts stopping worse towards the end of the ordeal and I have to start grabbing lower gears to help brake.
Also, husteling thru waskhes, service roads will fade the brakes to uselessness...

Any one that says that better brakes are a waste of money needs a reality check.
all depending on the application.

and 80mph? didn't think there were speed limits that high anywhere in the country. unless you are ducking out from the po-po... lol
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Old Mar 31, 2010 | 02:06 PM
  #43  
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Originally Posted by Mike H.
Well, stopping from 80mph to 0mph heats and fades the heck out of mine... the truck actually starts stopping worse towards the end of the ordeal and I have to start grabbing lower gears to help brake.
Also, husteling thru waskhes, service roads will fade the brakes to uselessness...

Any one that says that better brakes are a waste of money needs a reality check.
Originally Posted by DagBMX
all depending on the application.

and 80mph? didn't think there were speed limits that high anywhere in the country. unless you are ducking out from the po-po... lol
Originally Posted by captainofiron
Yes I have run them, BUT in my Trans Am for SCCA competition
unless you race your jeep in some sort of road race you will not see any benefits
see this thread

https://www.cherokeeforum.com/f2/wha...k-these-39531/
In case None of you have noticed, the topic has changed.... We are now talking about break pads. Maybe you should see what people are talking about, or finish reading before chiming in...
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Old Mar 31, 2010 | 02:26 PM
  #44  
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Originally Posted by Silly *****
In case None of you have noticed, the topic has changed.... We are now talking about break pads. Maybe you should see what people are talking about, or finish reading before chiming in...
dont use slotted rotors or drilled rotors

and what exactly are break pads?
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Old Mar 31, 2010 | 02:32 PM
  #45  
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Originally Posted by captainofiron
dont use slotted rotors or drilled rotors

and what exactly are break pads?
X2

the pads that break dancers use, commonly refereed to as a cardboard box. (jk)
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