How do you solve it?

**cobrabitn** · 03-17-2003, 08:50 AM

I Lost brake pedal pressure after my last lap at CMP when I pulled into the pit area and let the car sit. What do I need to do to avoid this from happening?

BTW, after the car cooled, the pedal pressure came back....

johnbasf · 03-17-2003, 09:45 AM

Cooling ducts.

Big Daddy · 03-17-2003, 10:10 AM

Quote:

Originally posted by johnbasf
Cooling ducts.

Ya what he said! You wouldn't think they would make that much of a difference but they REALLY DO!

**97whitevert** · 03-17-2003, 11:09 AM

ok then, which ones????

sparks from the brakes are NOT a good thing right??!?!!?

kevin · 03-17-2003, 11:20 AM

Quote:

Originally posted by cobrabitn
I Lost brake pedal pressure after my last lap at CMP when I pulled into the pit area and let the car sit. What do I need to do to avoid this from happening?

BTW, after the car cooled, the pedal pressure came back....

if your brakes got hot enough to fade like that, then you'd better replace the brake fluid too.

Andy M · 03-17-2003, 11:23 AM

Tony,

The most likely culprit is/was brake fluid boiling. I would replace the fluid asap... and of course check the remaining components to ensure proper operation. Pads, rotors, etc...

I use DOT4 fluid in my car and even after repeated hard braking in corners for 20-30 minutes at a time, I get no brake fade and no mushy pedal. Of course I am also using some pretty agressive pads in front on the track - PF 97 compounds on two piece floating Brembo rotors.

svt_coupe · 03-17-2003, 11:39 AM

Throwing the checked flag at T9 instead of start/finish is a great idea (the way grid was setup, I like it better). However, it doesn't give the brakes enough of a chance to cool adequately. Those 13" rotors act as large heat sinks and without moving air to dissipate the heat, they transfer heat to the calipers... which begin to boil fluid.

This happened to Jason too. He had plenty of pedal on track, came off and parked it. Then the pedal went completely away 2 minute later when he moved the car.

Bleeding the brakes will get rid of this problem.

03-17-2003, 08:50 AM	#1
cobrabitn Dr Jekyll on the street, Mr Hyde on the track Join Date: Jun 2001 Location: Rock Hill SC Posts: 14,649	How do you solve it? I Lost brake pedal pressure after my last lap at CMP when I pulled into the pit area and let the car sit. What do I need to do to avoid this from happening? BTW, after the car cooled, the pedal pressure came back.... __________________ Cobrabitn 2016 Ruby Red Metallic with Caribou accent F-350 Crew Cab Stump Puller! 6.7 Diesel Automatic with Chrome Package, Off Road Package, 3.55 Locking axles, and Ultimate Lariat Interior Trim Package! 2017 Shelby GT350 Coupe - track car! Mods: JLT True Cold Air oil catch can 2009 Vista Blue Shelby GT 500 Coupe - Garage Queen Tinted Windows JLT True Cold Air Kit Pro-Dyno Tune 526 rwhp - 511 rwtq 1994 Rio Red Indy Pace Car #22 "Runabout" Snake in the grill MGW shift knob 1996 SVT Cobra Wheels 1969 New Lime Mustang Mach 1 Sportsroof - Second owner - bone stock with shaker. One SVT Cobra, one Shelby GT500, one 69 mach 1, and a Shelby GT350 is better than nothing! Custom Data Plates for your Mustang or Ford! Buy "Cool Merchandise" at Data Plates Plus www.dataplatesplus.com See my MSR Video here!

03-17-2003, 09:45 AM	#2
johnbasf Registered User Join Date: Jun 2001 Location: Lewisville,NC Posts: 2,674	Cooling ducts. __________________ John Pearson

03-17-2003, 11:09 AM	#4
97whitevert well, maybe.... Join Date: Oct 2001 Location: anywhere, everywhere....NC Posts: 11,730	ok then, which ones???? sparks from the brakes are NOT a good thing right??!?!!? __________________ Lisa 97 white convertible #99 Born on 1/28/97 03 sonic blue coupe #323 Born on 6/4/02 86 SVO Mustang track beast- The older brother of the SVT ! 99 green BAT 95 laser red F150 06 sonic blue Escape "Live as if you were to die tomorrow. Learn as if you were to live forever." -- Mahatma Gandhi

03-17-2003, 11:23 AM	#6
Andy M SCMC Member Join Date: Sep 2001 Location: Northwest Houston Posts: 1,086	Tony, The most likely culprit is/was brake fluid boiling. I would replace the fluid asap... and of course check the remaining components to ensure proper operation. Pads, rotors, etc... I use DOT4 fluid in my car and even after repeated hard braking in corners for 20-30 minutes at a time, I get no brake fade and no mushy pedal. Of course I am also using some pretty agressive pads in front on the track - PF 97 compounds on two piece floating Brembo rotors. __________________ Andy SCMC #521 '03 Cobra Coupe - #3067 of 8394 Coupes (1 of 992 in silver metallic) '02 F250 SD Powerstroke 4X4 Crew Cab - my daily driver and Cobra hauler '13 BMW 28i X3 - Angela's daily driver '06 Jeep Liberty LE - daughter #1's car '11 Mazda 3 Touring - daughter #2's car '00 Cobra R - #155 of 300 - SOLD!

03-17-2003, 11:39 AM	#7
svt_coupe Bryan Shugg Join Date: Jun 2001 Location: Charlotte, NC Posts: 817	Throwing the checked flag at T9 instead of start/finish is a great idea (the way grid was setup, I like it better). However, it doesn't give the brakes enough of a chance to cool adequately. Those 13" rotors act as large heat sinks and without moving air to dissipate the heat, they transfer heat to the calipers... which begin to boil fluid. This happened to Jason too. He had plenty of pedal on track, came off and parked it. Then the pedal went completely away 2 minute later when he moved the car. Bleeding the brakes will get rid of this problem. __________________ Bryan Shugg #67 American Iron East

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