AFM Web

Go Back   Ford Mustang Forums > Mustang Forums > 4.6 Mustang > 4.6L Tech
Welcome to AllFordMustangs.com. We look forward to you registering on our forum and making your first post.

Reply
 
Old 09-16-2005   #1 (permalink)
JimmyBoy is offline Rookie


Joined: Sep 2005
Posts: 23 Threads: 11
Default Drilled and Slotted Roters???????

apparently i have semi metalic brake pads on my car now, ive noticed some problems stopping so when i took my car in to have it checked they said i need to have ceramic brake pads. ok, so i am going to be changing my pads to ceraminc and was wondering if i should get drilled and slotted rotors also, or should i just keep what i have now, also is there anything special i need to do to change these pads, ive never changed pads on a car with ABS before, or is it the same as non abs cars???
thanks
__________________
2002 mustang gt, automatic tranny, stock everything except CAI
JimmyBoy is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #2 (permalink)
engineer76 is offline Made Member

4.6L Member
S197 Member


Joined: Feb 2005
Posts: 710 Threads: 22
 engineer76's Country Flag
Zurich
Default

Hi Jimmy

I had Ceramic pads on my GT. I wasn't happy with them.
I got a new set of rotors and the Ford pads in the rear and the Motorcraft ones in the front.
How did stopping power change?
Over all stopping power did NOT increase, how ever the way HOW the brakes FEEL is WAY better now.

I've heared that a lot of people with drilled and slotted rotors were complaining about the noise. (I never had drilled and slotted rotors on a stang)

I am wondering if you would not be better off if you just get the, I think it is 13", Cobra/Bullit rotors, calipers and pads. But I have never done such a conversion. You have to ask someone else.

Hope I could help with this info.
engineer76 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #3 (permalink)
tripleblack is online now Forums Moderator

4.6L Member


Joined: Feb 2005
Posts: 14,647 Threads: 692
 tripleblack's Country Flag  View tripleblack's 48 photos
Atlanta   Georgia
Default Cobra

I have 13" Baer cross drilled/slotted rotors on my car, and the noise is very loud (ticking sound like a bicycle with a playing card pinned to hit the spokes). They definitely stop the car better - but the sound is a distraction.

Get the 13" Cobra kit for your front that has cross-drilled rotors and comes complete with ss brake hoses, Cobra calipers, and matching pads. Set you back about $700 - but you'll have great brakes.

You can get a matching setup for the rear for less (I think about $500). Talk to them on the phone - they might knock off a bit more if you buy front and rear as a kit.

I all you want is the look and a little better brakes, buy just the cross-drilled standard size rotors and a set of Hawk pads. This option will run you about $450 for all 4 wheels.

Sorry, don't have a site recommendation - Summit sells these, but their prices are usually not the best. Try Amp Performance, maybe.

tripleblack
__________________
tripleblack

"You can never be free until you let yourself go."
tripleblack is online now  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #4 (permalink)
jasons99gt is offline Made Member

4.6L Member


Joined: Jun 2002
Posts: 821 Threads: 79
 jasons99gt's Country Flag
Marysville   Ohio
Send a message via Yahoo to jasons99gt
Default

Quote:
Originally Posted by tripleblack
I have 13" Baer cross drilled/slotted rotors on my car, and the noise is very loud (ticking sound like a bicycle with a playing card pinned to hit the spokes). They definitely stop the car better - but the sound is a distraction.

Get the 13" Cobra kit for your front that has cross-drilled rotors and comes complete with ss brake hoses, Cobra calipers, and matching pads. Set you back about $700 - but you'll have great brakes.

You can get a matching setup for the rear for less (I think about $500). Talk to them on the phone - they might knock off a bit more if you buy front and rear as a kit.

I all you want is the look and a little better brakes, buy just the cross-drilled standard size rotors and a set of Hawk pads. This option will run you about $450 for all 4 wheels.

Sorry, don't have a site recommendation - Summit sells these, but their prices are usually not the best. Try Amp Performance, maybe.

tripleblack

So the "clicking" sound is normal? I thought they installed my rotors backwards! Thanks for the info! It only comes from the back though. I have the Baer rotors in the back.
__________________
99gt vert, CAI, Ford Racing Shortie Headers, MAC 2.5in catback, MAC o/r h-pipe, FRPP alum. driveshaft, March underdrive pullies, sct custom dyno tune, eibach pro-kit, bullitt alum pedals, Cobra Brake Kit, Tokico shocks and struts, PIAA bright whites...FRPP 4.10s!
jasons99gt is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #5 (permalink)
GR40Snake is offline Apprentice


Joined: Mar 2005
Posts: 84 Threads: 6
 GR40Snake's Country Flag
OC   California
Default

If your rotors are not warped or show signs of cracking then there is no reason to replace them. Unless, like me you agree that the GT brakes are inadequate for a heavy powerful car, especially if you ever plan to track your car as I do. Do it right the first time if you want a serious upgrade. Your best bet is to go with the 2000 Cobra R Brembo Kit or for less $$ you can settle for a regular Cobra 13inch upgrade. If you do replace your rotors have them cryotreated first. www.cryoscience.com Regarding drilled or slotted or both, both D&S looks good on the street though if you track the car go slotted at most. Per a Brembo Rep: A drilled rotor will promote cracking from the holes as it heats and cools too quickly, because of the holes, while on track. Ceramic pad technology is marketed as superior to simi-metalic and was created for longer pad life with more resistance to fading. Baer Brakes recommends SBS pads, they are ceramic, I run the Track pad with EradiSpeed+ f/r on my Cobra, stock calipers for now. SBS Track pads are the middle of the three SBS pad levels. I do have a hint of squeak during gentle very low speed stopping for the first few miles until some heat builds then it goes away, never heard clicking. This squeaking sound, I think it sounds cool, is the same sound a race car makes in the pits before it goes out on track, once on track you don't here it again. My experience with EBC & PFriction was not favorable. When I need pads I will again buy SBS. Go to www.baer.com or www.brembo.com and see for yourself. Also consider steal braided lines. Changing pads on an ABS equipped car is the same as non ABS car.

http://baer.com/Products/SBSBrakePads.aspx
__________________
98 SVT Cobra Black/Black - Griggs Racing GR40 system w/ Koni D/A coilovers F/R, T56 w/ AlumFly&Shaft, Pro-5.0 w/ JRoush Shifter handle, 4.10's, KBrown Extreme Matrix System, Magnaflow X w/ MagnaPac dumps, JLT CAI, FRiver Power Steering Rack&Shaft, Miezer Electric Water Pump, Steeda SFI Crank Pulley, Taylor 10.5mm wires & Autolite 764, EradiSpeed+ F/R w/Steel Lines Hawk+, Plasma Booster, Toyo RA1, etc.
GR40Snake is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #6 (permalink)
1996gtstang is offline Apprentice


Joined: Mar 2005
Posts: 67 Threads: 21
SALEM , OR
Send a message via AIM to 1996gtstang Send a message via Yahoo to 1996gtstang
Default

power slot rotors,,thats what i put on and they are quiet and stop on a dime only cost bout $650 and change well worth it!!!great cheap breaks and i installed myself in half a day all four 13 inch rotors
__________________
DRIVE IT LIKE YOU STOLE IT...

1996 Mustang GT. , cams, ,40 series flowmaster,K&N air filter, still stock air intake, toyo proxes 4 tires, power slot disc brakes, intake manifold, more to come........



"Capitol Area Mustang Club" of Salem Oregon
1996gtstang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #7 (permalink)
GR40Snake is offline Apprentice


Joined: Mar 2005
Posts: 84 Threads: 6
 GR40Snake's Country Flag
OC   California
Default

You get what you pay for
__________________
98 SVT Cobra Black/Black - Griggs Racing GR40 system w/ Koni D/A coilovers F/R, T56 w/ AlumFly&Shaft, Pro-5.0 w/ JRoush Shifter handle, 4.10's, KBrown Extreme Matrix System, Magnaflow X w/ MagnaPac dumps, JLT CAI, FRiver Power Steering Rack&Shaft, Miezer Electric Water Pump, Steeda SFI Crank Pulley, Taylor 10.5mm wires & Autolite 764, EradiSpeed+ F/R w/Steel Lines Hawk+, Plasma Booster, Toyo RA1, etc.
GR40Snake is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #8 (permalink)
tripleblack is online now Forums Moderator

4.6L Member


Joined: Feb 2005
Posts: 14,647 Threads: 692
 tripleblack's Country Flag  View tripleblack's 48 photos
Atlanta   Georgia
Default Long story

Sounds like you may have the same rotors I have (Baer Eradispeed). They really have no solution for the noise - they just don't want to admit it. Noise is of course not a factor for track use - where performance is all that matters... On the street, the noise will make you crazy.

Cross-drilled rotors aren't so noisy - I wish I had followed the advice I just gave Jimmy.

tripleblack

Quote:
Originally Posted by jasons99gt
So the "clicking" sound is normal? I thought they installed my rotors backwards! Thanks for the info! It only comes from the back though. I have the Baer rotors in the back.
__________________
tripleblack

"You can never be free until you let yourself go."
tripleblack is online now  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #9 (permalink)
tripleblack is online now Forums Moderator

4.6L Member


Joined: Feb 2005
Posts: 14,647 Threads: 692
 tripleblack's Country Flag  View tripleblack's 48 photos
Atlanta   Georgia
Default GR40Snake brake

The stock brakes bite (in a bad way, unfortunately). My whole philosophy of auto-modification is backwards from norm. When somebody else might be slapping an aftercat on their car, I'm adding good brakes, so I'm serious about brakes.

I agree the R brakes are better than the standard Cobras, and I should have mentioned that he will need 17" wheels to use them (I'm not sure, but he may need more space for the R brake calipers...). The R brakes also cost more, and if you need 18" wheels, the cost will be high (I run 18" wheels, so no problem for me, but we might need to hear from someone on the forum running Brembo R brakes with 17" wheels).

Cryotreating is new to this old dog - but I've read the treatment really does work. How much does it cost?

I suspect you don't have the problems with your brakes because you avoided the cross-drilled AND slotted path (picking either one for the street works fine - just not both). Cross-drilling (old school) does indeed promote cracks at track speeds and loads. Cross slotting (slots that run all the way through the rotor) can work, particularly on solid rotors.

For a street setup (with rare road race use) I suspect the Cobra brakes would do fine. The R's are still widely available and well thought-out - if you can stand the $$$.

Overall, I think your and my advice fits neatly together. Good luck with your track events. Just curious - what sort of suspension modifications have you made?

tripleblack

Quote:
Originally Posted by GR40Snake
If your rotors are not warped or show signs of cracking then there is no reason to replace them. Unless, like me you agree that the GT brakes are inadequate for a heavy powerful car, especially if you ever plan to track your car as I do. Do it right the first time if you want a serious upgrade. Your best bet is to go with the 2000 Cobra R Brembo Kit or for less $$ you can settle for a regular Cobra 13inch upgrade. If you do replace your rotors have them cryotreated first. www.cryoscience.com Regarding drilled or slotted or both, both D&S looks good on the street though if you track the car go slotted at most. Per a Brembo Rep: A drilled rotor will promote cracking from the holes as it heats and cools too quickly, because of the holes, while on track. Ceramic pad technology is marketed as superior to simi-metalic and was created for longer pad life with more resistance to fading. Baer Brakes recommends SBS pads, they are ceramic, I run the Track pad with EradiSpeed+ f/r on my Cobra, stock calipers for now. SBS Track pads are the middle of the three SBS pad levels. I do have a hint of squeak during gentle very low speed stopping for the first few miles until some heat builds then it goes away, never heard clicking. This squeaking sound, I think it sounds cool, is the same sound a race car makes in the pits before it goes out on track, once on track you don't here it again. My experience with EBC & PFriction was not favorable. When I need pads I will again buy SBS. Go to www.baer.com or www.brembo.com and see for yourself. Also consider steal braided lines. Changing pads on an ABS equipped car is the same as non ABS car.

http://baer.com/Products/SBSBrakePads.aspx
__________________
tripleblack

"You can never be free until you let yourself go."
tripleblack is online now  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #10 (permalink)
GR40Snake is offline Apprentice


Joined: Mar 2005
Posts: 84 Threads: 6
 GR40Snake's Country Flag
OC   California
Default

You are correct Triple about the wheel clearance issues. A brake upgrade is no good if it doesn’t clear your wheels. If I remember correctly it was $25 a rotor to cryotreat. The shop I use www.x-m-p.com sent them out and all I had to do was wait a couple of days. See my signature for suspension mods or go to www.griggsracing.com . The red vert on the front page has 660rwhp 315's on all four. I took a ride around Buttonwillow Raceway in this car with John Griggs....WOW.
__________________
98 SVT Cobra Black/Black - Griggs Racing GR40 system w/ Koni D/A coilovers F/R, T56 w/ AlumFly&Shaft, Pro-5.0 w/ JRoush Shifter handle, 4.10's, KBrown Extreme Matrix System, Magnaflow X w/ MagnaPac dumps, JLT CAI, FRiver Power Steering Rack&Shaft, Miezer Electric Water Pump, Steeda SFI Crank Pulley, Taylor 10.5mm wires & Autolite 764, EradiSpeed+ F/R w/Steel Lines Hawk+, Plasma Booster, Toyo RA1, etc.
GR40Snake is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-16-2005   #11 (permalink)
Monkey Boy is offline Top Dog

V6 Member


Joined: Nov 2002
Posts: 4,232 Threads: 175
 Monkey Boy's Country Flag  View Monkey Boy's 2 photos
Aiken   South Carolina
Default

For starters, your car came with ceramic pads from the factory and they are a much better pad than semi-metallics. They are quieter and make less dust. As far as the rotors, I am going to install some Brembo cross-drilled and slotted rotors on Sunday. I'll make a post in the community lounge and let you guys know how I like them.
__________________
2008 Toyota Tacoma Prerunner SR5 Reg Cab
2.7 4 banger
No mods (yet...)

2002 V6 manual coupe (SOLD)
Monkey Boy is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply



Thread Tools


sponsors

Mustang Photos
Add to Favorites    Link to us    Contact    Directory    Site Rules    Archive    Terms of Use    Privacy    Top Sites    RSS    Meet Our Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2010 All Auto Enthusiasts Network

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112