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Author Topic:   bad brakes
NORACIN
Dirt Newbie

Total posts: 3
posted December 04, 2005 09:21 PM  
My brakes fade bad at the end of the race I have to keep them pumped up for them to work good.Im running a mustang manual master cylinder with a aftermarket prop. valve turned almost off to rear disk brakes on a metric car.My track is dry slick aLL the time so I need goood brakes to be smoother and faster.Anybody have a good setup for this? Thanks

M1
Dirt Freak

Total posts: 259
posted December 04, 2005 10:19 PM  
sounds like an over heating problem. get better vented disc's or make some sort of scoop for the rotors.

even a better grade of brake fluid might help?

WesternAuto17
Dirt Forum Champ
Total posts: 573
posted December 05, 2005 08:21 AM  
I assume you have the rears turned off to tighten up corner entry.

If your dry slick all the time, you might have to find another way to get into the corner better. Maybe you should add some rear brake.

If you have rear discs and you rear percentage is over 50 and you have the rears almost turned off, than you are overworking the front brakes. Your trying to slow the car with the wheels with the least weight on them, so you get on them sooner and harder so they heat up quicker.

My car is 53% rear and my brakes are actually biased to the rear. If I have trouble loose in, than I crank 'em back a bit.

Just a thought, good luck.

Anbody ever ducted air from the nose directly to the calipers? A street stock is so open underneath, I don't know if it would do anything or not.

eborcim
Dirt Freak

Total posts: 315
posted December 05, 2005 08:50 AM  
You might look into some of the different compound brake pads. Wilwood has several.

Also make sure they are not dragging too much.

[This message has been edited by eborcim (edited December 05, 2005).]

allzway
Dirt Maniac

Total posts: 140
posted December 05, 2005 09:08 AM  
Change your pads and especially your fluid.

Sounds like you are boiling your fluid.

A good cheap fluid can be bought at your local Ford Dealership.

I run the Ford HD fluid in my road course car and have had great luck with it.

Also, a good bleading will help.

WesternAuto17
Dirt Forum Champ
Total posts: 573
posted December 05, 2005 03:00 PM  
Another thing I just remembered, I bought these Wilwood brake pads (Speedway Motors part number 8358936) a couple years ago. These things are awesome, I could feel a definate difference, they work a ton quicker so they generate less heat and thus are less likely to boil the fluid.

They are pretty spendy, $200 for all for wheels, but they make the car faster and safer, so I think they are a great buy.

oceanridge motorsports
Dirt Full Roller

Total posts: 43
posted December 05, 2005 10:59 PM  
Change your fluid , your boiling it . Only use new UNOPENED cans of fluid . The fluid attracts moisture which will just kill your boiling point , ie, pedal fade .Bleed your brakes often . every other oil change is good for heavy usage . Take allzways advice , go to the parts counter of your local ford dealership , tell them what year your mustang master cyl. is and use the best fluid they recomend .And put a spring on your pedal , it might be hanging down just a bit , causing some minor drag , creating a situation were the brakes never get a chance to cool on the chutes . Good luck .

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http://freewebs.com/oceanridgemotorsports

Eljojo
Dirt Forum Champ
Total posts: 992
posted December 06, 2005 04:22 AM  
I use Castrol GTX-never a problem!

NORACIN
Dirt Newbie

Total posts: 3
posted December 07, 2005 03:33 PM  
thanks for the help.

bryanb30
Dirt Freak

Total posts: 244
posted December 09, 2005 07:01 PM  
hey one thing to check is your rotor vane placement.........make sure if you have curved vanes they are pointed to the front so that the air gets forced thru the rotor..my rear rotors have left and right stamped on em but i think that the vanes on the front are straight im not sure

  

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