Thermostat or restrictor?

[Campbell]

I was constantly running too hot, especially in 90 degree July weather!! I ended up shrouding the radiator (most important), gutted a thermostat to make a restrictor, blocked the water pump bypass hose and the hose going in the side of the head so all coolant goes through the radiator before entering the radiator, put on an oil cooler (2nd most important!!) and eliminated the OE water cooled oil cooler and finally switched to water wetter. I also added a small electric fan for paddock cooling. It runs perfect now. good luck

[racer_tim]

I also "hot wired" the stock fan to a switch on the dash, so during safety car laps, I have to remember to hit the switch, and make sure to turn it off @ speed.

[JamesB]

tim, I have the same setup and added a bright orange LED light to remind me that its on.