quote:

Originally posted by B KING:
This info is from Mark Williams Enterprises:

https://www.markwilliams.com/d...ke-installation.html

"There’s also the matter of brake fluid, with DOT 5.1 preferred due to its ability to withstand high temperature without “boiling.” DOT 5.1 is hygroscopic, as opposed to silicone-based DOT 5.0, and has proven to work well in drag racing environments.

DOT 4 (non-silicone) will also work fine for most drag applications. Changing the brake fluid annually is another well-founded recommendation. Using a pressure gauge to verify line pressure is another valuable tip."

https://www.markwilliams.com/braketech.html

"Use of DOT 4 or 5.1 fluid with a high boiling point and lubrication for seals and pistons is recommended. Do not use (DOT 5) silicone fluids."

But what do they know?

Im an ed fan and actually value his advice!!

Thanks Mike.

Wow! A little bromance

So lots of feedback. Mike, what’s your plan?

The first thing I did when I bought the car I still have was add a second set of brakes with a hand lever...

That was around 2007 and I have upgraded it to M-W brakes a year or two ago and that was a big improvement.....

quote:

So lots of feedback. Mike, what’s your plan?

ive got 4 brand new calipers from mark williams and new ferod pads...sending the other 4 back to mw for rebuilds
flush system with dot 6

quote:

Originally posted by adv ET 266:
All race brake fluidS list the max temp in print. 5.1 is ~525F (if free of water moisture). Add 100F if a Dot 4 race fluid is your thing. I only used 5.1 in recent years. It’s a derivative of Silicon and less corrosive then an Dot 4.

Appears 5.1 has the highest boiling point and will mix with others. Odd one out is the DOT 5 which will not mix with any others. Do not know what would happen if you mixed them and think it would be hard to get all of it out of the system.
https://epicbleedsolutions.com...dot-5-1-brake-fluid#

Looks like one of the biggest downside of DOT 5 is its susceptibility to aeration. There seem to be some pros in the right application as well. It's not hydroscopic. With the ability to generste air bubbles it would not great for high vibration applications. Of course stop with any technical discussion they have no place here There are no pros and cons comparisons allowed. Lol. There is their way and the WRONG way.

What is the advantage or disadvantage of being hygroscopic? In a closed system, where does the water go if there is some moisture in there (not a perfect world) and it won't absorb into the fluid? Does that make metal parts more susceptible to corrosion?

So let me see if I’ve got this clear... some internet nobodies posting on an message board regurgitating what they’ve read after a google search know better than Undercover and MPR, the best at what they do? Got it.

I’ll keep using what I do and so will the premier drag car builders in the country.

From the literature I read they suggested not using it in cars that would sit long periods. Water would go to lowest point in the system. Regular use would essentially boil off any moisture. I am intrigued and I want to see some real life test results. I worked in automotive electrical endurance testing for a good period of my career but nothing related to brake fluid other than electrical components resistance to it. You bring up some interesting points. While I agree it is closed i dont think it is 100% sealed and could still be susceptible to moisture. I guess I am assuming it's a matter of absorbed and reducing the boiling point or separated and collecting. Obviously I would think a good time period would be required. Years not months I'm totally guessing.


Wow a real honest to god discussion without being called a loser and condescending comments.

Assumptions and guessing based on internet info from the 1970s is rampant in this thread. Meanwhile the real world testing and use has been done for decades by real drag racers and chassis builders.

Wow. We all have ego's but come on Mr. ******. I really dislike when these potentially informative threads deteriorate into grade school recess rhetoric. By all accounts, it appears you are associated in these breakdowns of decency quite often.


Share your knowledge and opinions in a respectful and measured manner. I think you will find it works better, and it is the type of trait, that breeds respect from your fellow man. You are obviously a seasoned racer, I don't think anyone would deny that. I am sure you are proud of your accomplishments, however you seem to lack any level of tact or class on forum discussions.
It appears you are incredibly ego driven, denying that you could ever learn anything from anyone. You seemingly also require the degrading of others to display and heighten the perception of your value. It seems that unless others agree exactly in kind with your views, they are ridiculed and told they are a loser, done nothing etc, etc.. Do you realize that is a very typical trait of people with deep rooted insecurities.

Have you ever taken a Myers Briggs Personality test? It may be helpful in your personal development plan and if you don't have one, you should. Everyone should.

Be helpful, engage in spirited debate when you disagree, be respectful even when you don't believe they deserve your respect. It works better I promise.

I assume you will make a rude, degrading or self aggrandizing comment in response to this, I hope I am wrong. You seem like you could really add value to discussions without all the negative connotations, I don't know maybe you enjoy it.

And obviously there are differences in opinions because MW says DO NOT USE DOT 5.
I don't know if you think the people you mentioned were born with all this knowledge or they gained it by LEARNING, weighing DATA and having an open mind. I am sure it works just fine. There is absolutely no need to act the way you do. I don't care if you are God's gift to drag racing, you don't need to act like a jerk.

The smartest people I know, KNOW WHAT THEY DON'T KNOW.

quote:

Originally posted by BG7X77:
From the literature I read they suggested not using it in cars that would sit long periods. Water would go to lowest point in the system. Regular use would essentially boil off any moisture. I am intrigued and I want to see some real life test results. I worked in automotive electrical endurance testing for a good period of my career but nothing related to brake fluid other than electrical components resistance to it. You bring up some interesting points. While I agree it is closed i dont think it is 100% sealed and could still be susceptible to moisture. I guess I am assuming it's a matter of absorbed and reducing the boiling point or separated and collecting. Obviously I would think a good time period would be required. Years not months I'm totally guessing.


Wow a real honest to god discussion without being called a loser and condescending comments.

Actually it is the Exact opposite for Dot 5. It is used in military vehicles because it is not hygroscopic. It will not absorb water so it is perfect for Military vehicles that can sit very long periods of time.

Your correct I wrote that incorrectly. It is NOT HYDROSCOPIC. My apologies.

quote:

Originally posted by BG7X77:
Your correct I wrote that incorrectly. It is NOT HYDROSCOPIC. My apologies.

All good

For our bench racer(s) here that have never used DOT5 fluid in the brake system of their race car... talk about what you know, not assumptions, guesses, theory, no mind quoting 50 y/o information.

Again, I and many racers and drag race chassis builders will continue to use DOT5 despite what the internet message board nobody’s opinions and assumptions. We will also continue to flush out brake system at the start of every season as I have done for over 25 years. I will also continue to send my calipers back to Mark William every 2 seasons and I will continue to replace my rotors every 3-4 seasons.

Oh I also know what Mark Williams says about DOT5 fluid in person.

quote:

Originally posted by 1320racer:
For our bench racer(s) here that have never used DOT5 fluid in the brake system of their race car... talk about what you know, not assumptions, guesses, theory, no mind quoting 50 y/o information.

Again, I and many racers and drag race chassis builders will continue to use DOT5 despite what the internet message board nobody’s opinions and assumptions. We will also continue to flush out brake system at the start of every season as I have done for over 25 years. I will also continue to send my calipers back to Mark William every 2 seasons and I will continue to replace my rotors every 3-4 seasons.

Again, and again, and again how many times are you going to tell us this same shyt? Many racers choose to follow the information provided by Wilwood Mark Williams and others. Is that OK with you Ed? Why can’t you just give your opinion once and let it lay? We saw it the first six times on this thread and many others. Why do you care if people agree with you or not?

I’ll answer it. Because you’re a narcissistic unhappy little guy with likely a small dyck and the only way for you to be somewhat happy is to try to bring others down to your level by being an internet expert. That’s pretty pathetic

Truth and the facts are Mr. internet know it all Ed kicked the rods out of his Firebird yet again way back in June and here we are three months later and it’s still not fixed. Perhaps if he spent less time telling everyone else what they’re doing wrong on the internet and more time working on his own shyt it would be fixed. But wait, he’s another guy with a big wallet that pays others to do his stuff. And it sounds like the list of engine builders that will even take his call is getting shorter and shorter.


Cue normal Ed reply of BS

Big mouth here and Hello in person, nuff said! Ain’t got time for another internet nobody and yes, got a lot more money than your broke dyck ass, I’m better looking too, have far more experience and racing knowledge than you and I’m working on stuff now as I always do.