Notices
Series I Wheels, Tires, Brakes & Suspension

Problems with big big brake upgrade

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 12-23-2008, 01:14 PM
  #1  
CraigRX8
Thread Starter
 
CraigRX8's Avatar
 
Join Date: Dec 2007
Location: Belfast, northern ireland
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
Problems with big big brake upgrade

8pot 14" disks front and 6 pot 13.4" disks rear. Would there may any problem with relation to master cyclinder etc
Old 12-23-2008, 01:45 PM
  #2  
Pew Pew Pew
iTrader: (10)
 
J8635621's Avatar
 
Join Date: Jun 2007
Location: Waco
Posts: 6,344
Received 128 Likes on 89 Posts
Are you going to still have use of the parking brake?
Old 12-23-2008, 01:52 PM
  #3  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
is this for a track car ?
if it is just a road car i have to ask .... why ?
Old 12-23-2008, 04:21 PM
  #4  
CraigRX8
Thread Starter
 
CraigRX8's Avatar
 
Join Date: Dec 2007
Location: Belfast, northern ireland
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
been offered front and year for $2800 brand new. or $2000 for just the front set. Regardles of parking brake i will be using one but a different way
Old 12-23-2008, 04:36 PM
  #5  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Pedal travel and feel will be significantly altered.
Actual braking efficiency will probably be reduced - the stock RX-8 braking system is already too powerful for the tires.
Old 12-23-2008, 05:17 PM
  #6  
CraigRX8
Thread Starter
 
CraigRX8's Avatar
 
Join Date: Dec 2007
Location: Belfast, northern ireland
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
so something like a 4pot caliper on the front would be more than enough
Old 12-23-2008, 05:28 PM
  #7  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Something like STOCK is best.
If you are running giant tires, an upgrade might help, but I can trip the ABS with 275s out back and 245s in front, so unless you are on race rubber, you will not see a performance benefit from bigger brakes. (Unless you are having real heat issues.)
Old 12-23-2008, 05:29 PM
  #8  
CraigRX8
Thread Starter
 
CraigRX8's Avatar
 
Join Date: Dec 2007
Location: Belfast, northern ireland
Posts: 259
Likes: 0
Received 0 Likes on 0 Posts
ok thanks jeff
Old 12-23-2008, 06:22 PM
  #9  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
if you want to upgrade your brakes - good pads are the way to go .....
Old 12-24-2008, 01:07 AM
  #10  
Zoom-Freakin'-Zoom
iTrader: (5)
 
swoope's Avatar
 
Join Date: Jan 2004
Location: orlando, fl
Posts: 14,602
Received 35 Likes on 31 Posts
Originally Posted by MazdaManiac
Something like STOCK is best.
If you are running giant tires, an upgrade might help, but I can trip the ABS with 275s out back and 245s in front, so unless you are on race rubber, you will not see a performance benefit from bigger brakes. (Unless you are having real heat issues.)

yes.

beers
Old 12-24-2008, 01:07 AM
  #11  
Zoom-Freakin'-Zoom
iTrader: (5)
 
swoope's Avatar
 
Join Date: Jan 2004
Location: orlando, fl
Posts: 14,602
Received 35 Likes on 31 Posts
Originally Posted by Brettus
if you want to upgrade your brakes - good pads are the way to go .....
double secret probation yes..

beers
Old 12-27-2008, 10:08 PM
  #12  
I don't buy Kool-Aid
 
DOMINION's Avatar
 
Join Date: Apr 2004
Location: Vegas Baby!
Posts: 8,823
Likes: 0
Received 2 Likes on 2 Posts
Another responce to that quote would be something along the lines like; but use caution they will eat your rotors
Old 12-27-2008, 10:13 PM
  #13  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Originally Posted by DOMINION
Another responce to that quote would be something along the lines like; but use caution they will eat your rotors
No, they wont.
Old 12-27-2008, 10:41 PM
  #14  
I don't buy Kool-Aid
 
DOMINION's Avatar
 
Join Date: Apr 2004
Location: Vegas Baby!
Posts: 8,823
Likes: 0
Received 2 Likes on 2 Posts
Realy wow. Thats odd. Cuz on my AT 8 with Hawk HP+ pads freaking killed my aftermarket rotors.
Old 12-27-2008, 10:52 PM
  #15  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
/\ thats odd cos hawk hp+ didn't kill my stock rotors ?
Old 12-27-2008, 10:58 PM
  #16  
I don't buy Kool-Aid
 
DOMINION's Avatar
 
Join Date: Apr 2004
Location: Vegas Baby!
Posts: 8,823
Likes: 0
Received 2 Likes on 2 Posts
I know right, and Hawk states on there web site they state; low brake dust B.S., low noise thats B.S. too. Maybe it was just me or a bad set of pads but I had them on in the blister heat of 100-120 and they still sucked.
Great stopping power but all the rest is for craps. I like the oem set up. Get the mastercyl brace and change your brake fluid often if you track or drive in the rain a lot and your good to go.
Old 12-27-2008, 11:02 PM
  #17  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Crap rotors, not crap pads.

HP+ is not the right pads for the street, anyway. Should have gotten HPS.
Old 12-27-2008, 11:07 PM
  #18  
I don't buy Kool-Aid
 
DOMINION's Avatar
 
Join Date: Apr 2004
Location: Vegas Baby!
Posts: 8,823
Likes: 0
Received 2 Likes on 2 Posts
Yup. Could have been the rotors I had.
Old 12-27-2008, 11:12 PM
  #19  
Zoom-Freakin'-Zoom
iTrader: (5)
 
swoope's Avatar
 
Join Date: Jan 2004
Location: orlando, fl
Posts: 14,602
Received 35 Likes on 31 Posts
Originally Posted by DOMINION
I know right, and Hawk states on there web site they state; low brake dust B.S., low noise thats B.S. too. Maybe it was just me or a bad set of pads but I had them on in the blister heat of 100-120 and they still sucked.
Great stopping power but all the rest is for craps. I like the oem set up. Get the mastercyl brace and change your brake fluid often if you track or drive in the rain a lot and your good to go.
dom

and how many track days do you have???


apples and oranges..

just a guess..

beers
Old 12-27-2008, 11:25 PM
  #20  
I don't buy Kool-Aid
 
DOMINION's Avatar
 
Join Date: Apr 2004
Location: Vegas Baby!
Posts: 8,823
Likes: 0
Received 2 Likes on 2 Posts
A big fat zero. But I'm open to suggestions. But I read a lot lol
Old 12-28-2008, 12:39 AM
  #21  
csl
Registered
 
csl's Avatar
 
Join Date: Mar 2007
Posts: 417
Likes: 0
Received 0 Likes on 0 Posts
I'm using front project mu 4 port BBK with 345mm rotor, rear Autoexe standard size 2 pieces slotted rotor. What I can say is, not so practical for town use (need to look at the back before braking, to avoid butt being kissed :D ). Use the master cylinder stopper on standard brake will be good enough. BTW, the original front caliper is super huge, the cyl size looks scary when removed. Like 4-5 ports all add together. Pay few times of pad price to have a bbk is just a waste if not use on track. I bought it more for cosmetic purpose. Regretted, but since the kit was expensive, need to use for a while before can let it go.
Old 12-28-2008, 12:43 AM
  #22  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Import and Modified both tested the Mproject mU system right after SEMA in 2005 and both found it performed worse than stock.
Braking distance was increased by more than 15 feet and pedal modulation was sketchy at best.
Old 12-28-2008, 02:01 AM
  #23  
Hit & Run Magnet
iTrader: (3)
 
kersh4w's Avatar
 
Join Date: May 2007
Location: DC Area
Posts: 6,690
Likes: 0
Received 3 Likes on 3 Posts
jeez mm, way to pop his $2000 bubble.



thats just got to suck.
Old 12-28-2008, 02:03 AM
  #24  
Never Blend In
iTrader: (2)
 
nuke0907's Avatar
 
Join Date: Oct 2006
Location: Summerville, SC
Posts: 4,524
Received 5 Likes on 5 Posts
Originally Posted by kersh4w
jeez mm, way to pop his $2000 bubble.



thats just got to suck.
on another note, check out MM's avatar.
Old 12-28-2008, 05:26 AM
  #25  
Aussie
iTrader: (1)
 
2SeeKU's Avatar
 
Join Date: Oct 2008
Posts: 297
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by nuke0907
on another note, check out MM's avatar.
Good spot!

I've gone and replaced just the rotors with slotted & cross drilled ones and l have to say, there isn't much difference from stock (not that l've done any test, just been once on the track to be honest). Probably best to keep that $2000, unless you really need to change your rotors?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
xAgyex
Series I Trouble Shooting
19
11-13-2023 07:51 AM
ktec
Series I Wheels, Tires, Brakes & Suspension
6
06-26-2021 10:18 AM
J2daG1990
Series II Wheels, Tires, Brakes & Suspension
8
09-24-2015 09:20 AM
JR RX8
Series I Engine Tuning Forum
10
09-08-2015 08:53 AM
AussieGray
RX-8's For Sale/Wanted
0
07-16-2015 03:58 AM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Problems with big big brake upgrade



All times are GMT -5. The time now is 09:46 PM.