[markff]

I know this topic is old so the OP is probably no longer on here. I have always suffered brake fade issues on my S2000 with uprated XP10 pads and uprated discs. Anyway i done abit of research and came up with water cooling to the inside vane of the brake discs. Currently i have purchased a 5 litre go kart fuel tank to stick in the boot and a 100psi ebay special diaphragm pump.

I got some jets from aquamist and i have timed the water flow and at full output i use 5litres in 10 minutes. I have also ordered some smaller jets to see the effect on cooling against water consumption.

I have sourced a delay off relay which means that i can have the pump only switch on during brake pedal application and then i can set it to continue to run for say 5-10 seconds after the brake pedal has been lifted. Obviously this will need fine tuning to ensure water consumption isnt excessive and that i still get adequate cooling.

I worked it out that based on the amount of time i spend on the brakes per lap on track and figured 5 liters will last 30 minutes. Which is more than enough for the average track session.

The one issue i have at the moment is that the cheap pump is abit of an unknown and to be fair it produces a very good mist and when i wound the adjustment in abit the pressure increased alot. Im going to fit an inline 150psi pressure gauge so i can actually see whats going on.

I have tested everything off of the car so far and seeing how it goes tomorrow i will plumb it all in along with the brake ducts.

Probably abit OTT for a weekend/trackday car but i love tinkering with things and this seemed like something that would be interesting to test and develop.

I know the jets aren't cheap and probably work out as the most expensive part of the project but it was well worth spending the money on them. Its amazing how much surface area the water covers when it sprays at such high pressure. The water just lingers in the air. I did consider spending more money on the pump but size is abit of an issue and to be honest until i test everything a larger pump might be unnecessary.