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Old 03-03-2012, 09:28 PM
  #22861  
3hree5ive0ero
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Originally Posted by r1forever
seeing if anyone can answer my question. Should the slotted and drilled rotors be up front or in the rear? i picked up another bbk but they have it configured with the slotted only up front and slotted and drilled in the rear. should that be right or other way around since most of the braking is in back
Most of the braking is done up front, not the rear. Under braking, the weight of the car shifts to the front, causing the fronts to work harder than the rears.

The rotor (regardless of slotted, drilled, blank) sizes are usually different from front to back, with the front being bigger. If the front/rear rotor sizes are the same, then you can do whatever you want (if dedicated track car with track only pads, put the drilled in the back).
Old 03-03-2012, 09:43 PM
  #22862  
r1forever
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lol i completely typed that wrong. Yes 90 percent of the braking is done up front. Why i typed that wrong i have no clue.
Old 03-03-2012, 09:45 PM
  #22863  
r1forever
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Originally Posted by ppat1989
Most of the braking is in front. I would have the slotted and drilled in front for better heat dissipation.
thats what i thought but wasnt sure. My willwoods have slotted/drilled all the way around. The willwoods have 14" up front and 13 in back so i know which ones go where. Just not sure bout the rotora
Old 03-03-2012, 10:16 PM
  #22864  
ilya_mhs07
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Originally Posted by r1forever
thats what i thought but wasnt sure. My willwoods have slotted/drilled all the way around. The willwoods have 14" up front and 13 in back so i know which ones go where. Just not sure bout the rotora
slotted rotors are perfect for the front if you track it beacuse if you have drilled rotors they tend to crack under hight temps. thats what most say. either way you got better braking power, unless you track it althe time you dont have to worry about it.
Old 03-04-2012, 05:59 AM
  #22865  
ZSpectrum
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Use blanks unless you like taking mass away from a heat sink and want to crack rotors because they're drilled and not forged with holes. Ive had much better braking with blanks compared to slotted rotors. Slotted rotors are left over from when pads actually had asbestos.
Old 03-04-2012, 06:35 AM
  #22866  
AllstarE4
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I thought slotted was the happy medium because it offered enough heat dissipation and still had strength to avoid cracking like drilled?
Old 03-04-2012, 08:57 AM
  #22867  
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Pretty neat drift.

http://www.lolbrary.com/post/14602/precision/
Old 03-04-2012, 09:39 AM
  #22868  
3hree5ive0ero
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Originally Posted by ZSpectrum
Use blanks unless you like taking mass away from a heat sink and want to crack rotors because they're drilled and not forged with holes. Ive had much better braking with blanks compared to slotted rotors. Slotted rotors are left over from when pads actually had asbestos.
Same with dimpled.

This is why I said put the drilled in the back if you're tracking a lot or have track pads which will generate more heat.


If you just do autox or do very little tracking, then you have nothing to worry about. I have DBA 4000 XS (drilled/slotted) in the front and put a few track days and several autox days without issues last year.
Old 03-04-2012, 10:08 AM
  #22869  
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I guess I will leave them configured the way they are.
Old 03-04-2012, 10:16 AM
  #22870  
r1forever
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Now I just need to find some oem cailper bolts to mount these calipers up
Old 03-04-2012, 10:22 AM
  #22871  
JaE35z
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Originally Posted by r1forever
Now I just need to find some oem cailper bolts to mount these calipers up
those bolts are 4 dollars, i think the P/N is 41138H wait til tomorrow lol
Old 03-04-2012, 10:28 AM
  #22872  
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You got the brembo bolts James. I need the regular ones. I thk Chris has mine
Old 03-04-2012, 10:30 AM
  #22873  
JaE35z
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Originally Posted by r1forever
You got the brembo bolts James. I need the regular ones. I thk Chris has mine
http://infiniti.sewellparts.com/oem-...edan-2004.html
Old 03-04-2012, 10:32 AM
  #22874  
r1forever
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Thanks James. I'll find something to work today and as soon as I finish this clutch install I'll see if I can get them on
Old 03-04-2012, 10:33 AM
  #22875  
JaE35z
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i couldn't look up the bolt thread and pitch but can't the local auto stores cut the bolts with the specs?
Old 03-04-2012, 01:44 PM
  #22876  
r1forever
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I have a thread guage. I got bolts. Clutch install is all done now it's time for the rotoras
Old 03-04-2012, 04:48 PM
  #22877  
AcidJake75
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LOL..I thought Stephens car was stolen... and all his parts were gone too..

https://my350z.com/forum/9636834-post530.html
Old 03-04-2012, 04:54 PM
  #22878  
Draconic350Z
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Car was stolen good sir. I will happily show you the police report and lack of a bank account if you think I sold the parts... That car was my investors car, he sold it after I raced it in las vegas.

Slotted is the best from all of the data I have seen. Drilled has the potential to crack during high stress periods of time. If you aren't racing around a circuit it isn't going to run the risk of cracking though. If you have to choose between front or rear, def do front.
Old 03-04-2012, 05:00 PM
  #22879  
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Oh I see.. This guy just happened to buy all the exact same stuff you had?.. I believe you have a police report.. Im sure its a piece of paper that says your car got stolen.. doesnt mean it actually was..
Old 03-04-2012, 05:06 PM
  #22880  
Draconic350Z
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Wow.... Yea, because I am going to risk however many years of my life and however big the fine is for something like insurance fraud? Strange how my car also had a single exit exhaust... A turbo kit, Takata Harnesses, built motor... I never have and never would commit a crime like that.

Wow... Just wow...

Last edited by Draconic350Z; 03-04-2012 at 05:08 PM.


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