[JimMueller]

I took my daily driver to a little road race practice course today. Each lap was only a minute and I'd stay out there for only 5-10 minutes. The first session I just wanted to work on tire temps, then I let it cool down. I actually logged the second session and have some questions.

Water temp: I live in Florida, so I run 100% distilled water with maybe 1-2 bottles of water wetter. After 7 laps, I noticed the coolant temp was at the 3/4 mark so I brought the car in. The scan tool later revealed the temp had peaked at 244*. Isn't that a bit warm? Solutions?

Brakes: In the front I have standard C6 calipers, Trackbrackets, DTC-30 pads, new standard C6 rotors. In the rear I have Powerslot rotors and HPS pads. All stainless lines and using SRF fluid. While it didn't have a problem stopping, the pedal became easier to depress and started grabbing hard closer to the floor. I didn't like the feel of this, how do I remedy it?

The log also shows it was pulling 4* of timing on all WOT sections. I bet I have a knock sensor code (IMG:http://www.frrax.com/rrforum/style_emoticons/default/mad.gif)

[JimMueller]

The water isn't leaking that quickly at this time. I'm making a point of carrying a couple of gallons of distilled water in the car and 1) checking the level before every time I start the car and 2) not driving too far. I'm leaning towards getting the Ron Davis unit with the built-in oil cooler. It'll have the provisions for the heater, water level sensor & -10AN oil fittings but takes ~2 weeks to build. Any concerns with water vs. air oil cooling? Since it's custom, would there be any benefit to effectively getting rid of the long water line behind the radiator by moving that fitting to the driver side? I'm not sure yet if this radiator is single- or dual-pass, but the fittings are in the OEM locations.

I'll probably buy a new level sensor, new heater lines and new water lines also. Any benefit to getting non-OEM water lines? I may just plug the oil cooler plugs until I replace my chipped oil pan, and do the oil cooler stuff the same time as the pan.