Brake fluid circulation setups...?

[AI#97]

Google returned nothing but the current patent holder information. Anyone have any links I can do some research on?

I am guessing it requires a special master cylinder with a dual feeds, one of which returns fluid on the "lift" stroke...or I suppose it could just circulate when "open" and then both push when pedal is depressed?


Looking for ideas to fix this brake problem that don't involve spending $2k.


CMC/2 guys...taking bids on my used brembos with TCE/Coleman rotor setup. Looks like stoptechs are in my future but I might have to look even bigger but still remain 13" rotors. goin' fast is expensive! LOL!!!

[Fbody383]

<< whistling >>
http://www.pitstopusa.com/detail.aspx?ID=4430
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[AI#97]

<< whistling >>
http://www.pitstopusa.com/detail.aspx?ID=4430
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That's TOO simple to work....manual pedal assembly only? Need more input!!!

[Fbody383]

<< whistling >>
http://www.pitstopusa.com/detail.aspx?ID=4430
<>

That's TOO simple to work....manual pedal assembly only? Need more input!!!

http://www.dpiracingproducts.com/store/surestop.php

Road race product at the bottom. I called DPI (since you wouldn't) and their comment was the NASCAR guys used them with the combination master cylinder before they went to duals so you should be able to keep the vacuum booster.

MFW for President!

[AI#97]

thanks Dave! Still want to do more research on how they work with 4 piston calipers and stock booster. The bigger fear is what happens when 350 to 400 degree brake fluid hits the plastic resovoir?! My guess is it melts....so I need to look at how to plumb the return loop into a coil and through a small cooler.

Just wish I could find some write ups on the net regarding the design of these systems. Will have to do some searching tonight if I find some free time.

[RichardP]

The bigger fear is what happens when 350 to 400 degree brake fluid hits the plastic resovoir?! My guess is it melts...

I think your a bit off on how much fluid this system displaces. It will take several brake applications before any fluid from the caliper reaches the plastic parts. By then it will have cooled considerably. You also won't be adding enough fluid to raise the temperature of the fluid that's there by that much. I wouldn't worry about it...


Richard P.

[AI#97]

The bigger fear is what happens when 350 to 400 degree brake fluid hits the plastic resovoir?! My guess is it melts...

I think your a bit off on how much fluid this system displaces. It will take several brake applications before any fluid from the caliper reaches the plastic parts. By then it will have cooled considerably. You also won't be adding enough fluid to raise the temperature of the fluid that's there by that much. I wouldn't worry about it...


Richard P.

You are probably right richard but after getting fairly intimate with how much fluid was bled at the event with each pump...it actually seemed like a lot of fluid moving. It seemed like 3 openings on each side of the caliper was easily 3oz of fluid. Considering the length of the front brake lines now with the ABS unit in the rear seat...if it's moving enough fluid, there should be plenty of "loop time" before it gets too hot. Plus, if it's actually moving with every pump of the system, the fluid doesn't get nearly as hot because it isn't in the caliper very long....

LIke I said, I don't quite have my hands around the details yet, but I LOVE the concept.

[Fbody383]

LIke I said, I don't quite have my hands around the details yet, but I LOVE the concept.

Here's the install diagram for the road race piece: http://www.dpiracingproducts.com/sto...op2install.jpg

It looks like Richard is half right; the circulation is contained solely in the pressure side and not through the reservoir, which makes sense given the line pressure.

It may be that a different part number is needed with the single master/reservoir in your setup.

Let us know as you get it figured out.

[AI#97]

It looks like Richard is half right; the circulation is contained solely in the pressure side and not through the reservoir, which makes sense given the line pressure.

It may be that a different part number is needed with the single master/reservoir in your setup.

Let us know as you get it figured out.

I am guessing here, but since it states the unit must be less than 12" from the M/C...there is some sharing/returning of fluid/air to the M/C reservoir. I think this is going to be my offseason project along with rebuilding the front calipers and probably the motor/tranny too... Hard part is going to be finding the fittings to replace the brake bleeders that I can count on AND clear the wheel and other parts... Will be interesting for sure!