Jump to content
SAU Community

Recommended Posts

Three types;

#1 recycles the brake fluid via a cooler tank, usually filled with ice or a normal cooler

#2 squirts water onto the rotors when brakes applied (hell on the rotors)

#3 recirculates water through special galleries in the brake callipers, uses an electric pump and cooler as in #1

:D

Three types;

#1 recycles the brake fluid via a cooler tank, usually filled with ice or a normal cooler

I was only aware of #3 (#2 I thought nobody would actually do)

#1 would be a nice setup. I would like to see how it all works, I can't quite imagine how you would do it without causing problems by pumping the fluid around.

#2 is how the formula 1 cars used to do it....and handily enough they would carry 20l of water to throw on the brakes and end up 20kg light, Im pretty sure they changed the regs to wiegh cars after the race after that :)

I was only aware of #3 (#2 I thought nobody would actually do)

#1 would be a nice setup. I would like to see how it all works, I can't quite imagine how you would do it without causing problems by pumping the fluid around.

#1 is used on Nascars, pretty simple concept. As well as the normal brake line from the master cylinder, they have a one way valve in the calliper, which is closed when pressure is applied (put foot on brake pedal). When pressure is removed (take foot off brake pedal) the valve opens and lets the residual pressure squirt a little of the hot brake fluid into another brake line. Usually it would flow back into the normal brake line and push some fluid from the line back into the master cylinder. This other brake line is connected to a cooler and then back to the top of the master cylinder.

So a little bit of hot fluid from each calliper goes via the cooler back to the master cylinder every time you take you foot off the brakes. This means that after a lap of so, all of the brake fluid has been circulated through the cooler.

This system also lowers the brake fluid temperature in the calliper instantly because it removes some hot fluid, which is replaced by cooler fluid from the brake line next time the brakes are applied.

It is a bitch to set up, if you have any pad knock off there is no residual pressure in the brake lines and you end up with a long brake pedal. So this system needs careful tuning of the one way valve and can not be used if there is any run out on the rotors.

Hope that helps (and makes some sense) :D

Water cooled....you would get more from useing a more modern approach to braking.

Everything in bold below is what should be done to std. braking systems before looking at expensive upgrades. But if you want to spend your money I do have New AP rotors for sale 355x35 ($700pair) and 328x28 ($600pair) look at the other upgrades first though.

Calipers.........exoctic alloys, Ti pistons and numbers of pistons etc.

Rotors...........cooling vane design, slotting etc....diameter/thickness and materials (carbon and or other compositions, diameter and thickness...all represent different acceptable operating heat ranges)...rotors are not just rotors.

PADS.............material composition and opperating heat ranged to suit applications...race, street etc......This is were the costly mistake are made.

BRAKE FLUID...you get what you pay for....different opperating heat range and quality....cheap upgrade for brakes that fade.

BRAKE LINES....another cheap upgrade for brakes that fade...go braided...big difference for the money.

Wheel/Rim choice...size, appertures and design that aid cooling.

Cool air ducting and areo-aided air deflectors on tension rods.

Water cooled....you would get more from useing a more modern approach to braking.

Everything in bold below is what should be done to std. braking systems before looking at expensive upgrades. But if you want to spend your money I do have New AP rotors for sale 355x35 ($700pair) and 328x28 ($600pair) look at the other upgrades first though.

Calipers.........exoctic alloys, Ti pistons and numbers of pistons etc.

Rotors...........cooling vane design, slotting etc....diameter/thickness and materials (carbon and or other compositions, diameter and thickness...all represent different acceptable operating heat ranges)...rotors are not just rotors.

PADS.............material composition and opperating heat ranged to suit applications...race, street etc......This is were the costly mistake are made.

BRAKE FLUID...you get what you pay for....different opperating heat range and quality....cheap upgrade for brakes that fade.

BRAKE LINES....another cheap upgrade for brakes that fade...go braided...big difference for the money.

Wheel/Rim choice...size, appertures and design that aid cooling.

Cool air ducting and areo-aided air deflectors on tension rods.

Don't know about "more modern", whilst all those things are regularly used in competition, so is water cooling. Super Tourers are arguable the most advanced form of sedan racing, ours has twin 4 spot callipers (2 on each wheel) and they have provision for watercooling. The engineering data shows they used watercooling on a number of circuits in England and Europe.

It is an extreme measure though, and very costly. :D

i had a set of brakes from wayne gardner's tohoku toms toyota JZA80 supra....these were awsome...the disc rotor was 16 inch with 6 titanium pistons magnesium body with a cute little radiator!I got them for my friend who still has them but hasnt fitted them yet...but there awsome!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Wideband is worth setting up if only for tuning purposes. I would not mess with the ignition system unless there's a misfire. HKS crank trigger is popular out here for the relatively easily sourced Denso crank sensor, not a bad idea to install as well regardless of power level on a standalone. Boost leak test is worth thinking about. Oil pressure sensor tied to a fuel cut isn't a bad idea either. Getting the tune figured out is a good idea. Without putting eyes on it and getting under it there's no way for us to tell you exactly what it needs but most likely you're down to the last 10% that will make a big, big difference in how happy you are with the car.
    • Doing a refresh of my 33 and can see a few websites stating they sell the entire main carpet for our cars, but they all have generic photos which is fine, i understand they are custom made to order.  Just seeing if anyone has got it done or had any experience with this, as i would only want to do it if the fit and finish was as good as oem https://carmatsdirect.com.au/products/moulded-carpet-or-vinyl-for-nissan-skyline-r33-1993-1998-coupe https://knoxautocarpets.com.au/moulded-carpets/nissan/skyline/skyline-r-33-1993-1998/
    • Any plans for E85? If so, add flex fuel sensor.   I'd probably add in the sensors I mentioned above if the Link will support using them for engine protection. With water pressure, you need to be able to effectively set it that "If temp > X, and pressure = atmospheric, shutdown" as at running temp, you should be able to read pressure in the cooling system. If pressure suddenly disappears, it means the water went some where, and this is a quicker reaction than waiting on water temp to go up (Which, can take a little longer than you'd like, considering it now has to wait for hot air to heat it up) Oil pressure, Oil temp, both would be on my list too if you're looking to add sensors. Wideband O2. And at least one EGT sensor. If you're feeling deluxe, put in individual runner EGTs. Single EGT sensor is more so forget about a specific number, get used to "What is normal EGTs", and then keep an eye on it, if it starts going away from "normal" it's a sign something is wrong (Also, things like the tune can still start going out of spec, but EGTs may not show it, for example one injector starts running leaning, so ECU richens everything up, now 5 out of 6 cylinders are rich, and running cool, with one cylinder lean and running hotter, so it's not perfect) Then there is your other things to look at non sensor related, but you may have already done, or have underway, and that would be things like building a sump for more oil, and better oil control under high G-Forces (Cornering, brakes, acceleration). Basically, the above is worth looking/thinking about, if the ECU can do protective stuff with it, and you continue to use it how you are (Drive it to the track, thrash it, drive home, repeat once every 3 to 4 months)
    • Can also confirm these work a treat for most balljoints and bushes. If you have access to a big rattle gun, they make the job so much easier and quicker, compared to using a socket wrench or shifter on the c-clamp 👍
    • Its sort of street but got used for circuit sprints on account of I never drive it on the road because I dont have the time to spare. So it usage was sits around for months at a time then gets driven either 50 or 250 kms to the track followed by 20 laps followed by 50 or 250kms home followed by stuck in the shed until next time. So yeah neither fish nor fowl. Just dont want to break it on the track as a preference. Hence the fairly short sensor/mod list. Probably more worried about it pinging itself to destruction more so than anything oil related.
×
×
  • Create New...