|
|
|
|
|||||||
 |
|
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
09-18-2009, 07:31 PM
|
#1 (permalink) |
|
Registered User
Join Date: Dec 2004
Posts: 570
|
I boiled my brake fluid today?
In case some of you track gurus only hang out in this area of the forum i wanted to post a link to this issue I had at the track today in regards to loosing my brakes for a bit.
Boiling brake fluid on a track day any insight would be much appreciated!
__________________
06' Exige C H R O M E O R A N G E Hire me to do Visual FX http://www.ericsmithcg.com/ exigevideos.com my depot of the best Lotus videos online http://exigevideos.com/ |
|
|
|
09-18-2009, 07:54 PM
|
#2 (permalink) |
|
Registered User
Join Date: Jan 2006
Location: Arizona
Posts: 440
|
Only boiled my brake fluid once. Normal DOT 4 that was 10 months old. The pedal started feeling spongy, then it would go to the floor. The pedal came back after it cooled off. EBC yellow brake pads on my mostly stock Elise on Hoosiers during a track day. Moutl brake fluid cured the problem.
__________________
Hoosier tires won in 2009: 11 so far Thank you Hoosier and NASA! |
|
|
|
|
09-20-2009, 12:09 PM
|
#3 (permalink) |
|
My other car's a mtn bike
Join Date: Aug 2006
Location: Venice CA
Posts: 1,367
|
Change the wet fluid. Motul RBF600 - never failed me. You'd never bleed it properly without knowing exactly how to do it in my experience. Call Allen and LPL 323-345-6292. His bleeds bring my pedal to the correct height for heel toe and make a solid pedal. Noone else has done it as well.
__________________
Sometimes you have to go in circles to move forward. 05 Elise NA 1750 lbs w/ full cage, fuel cell, aero, 173 whp - Colin would be proud. 2008 LR3 HSE 2005 Mini S Convertible If I'd thought that one day ALL my cars would be British, I'd have laughed at myself! |
|
|
|
|
09-24-2009, 02:38 PM
|
#4 (permalink) |
|
Registered User
Join Date: Nov 2004
Location: Boston
Posts: 250
|
Boiled brake fluid isn't the only thing that can cause a soft/long brake pedal...
I've tracked various cars over the last 9 years w/ various brake pad compounds, fluids, and systems. If your pedal feel/length comes back AlMOST 100% after you let it cool for a while, it's most likely you pads, NOT your fluid. As your pads fade/glaze, more pressure is required to generate similar braking results as before... hence the longer pedal travel. If you boiled your fluid, your pedal will never fully firm up even if you let the car cool for days. I have almost never seen 300 degree temp on any part of the brake system on an Elise after pitting in from the track... even on the hottest day at Watkins Glen. As a comparison, my old Audi registered well over 600 degrees and my BMW was in the mid-500 degrees. Get yourself a nice set of race pads for the track.
Looking at your brake fluid reservoir won't tell you much. I've used pressure bleeder in the past and I've had dealers pressure bleed my brake system in the past. Nothing works better than doing it manually w/ the brake pedal (you need two people to do it). Think about it... your foot can generate a lot more pressure than the 10-15 lbs of pressure a pressure bleeder can. This is especially important since our front brake calipers have the brake lines entering the caliper from the top... got to make sure you don't have any air trapped in the caliper to begin with. Brake fluid is cheap compared to all the other components in a brake system. Motul is nice compatible Dot 4 fluid... no reason not to use it. Hope that helps. |
|
|
|
Linear Mode
