If you are tracking TT Z you will be always chasing cooling. My experience is for tracks less than two miles long there generally is not long enough straight aways to allow for temps to recover efficiently regardless of cooling mods. That said I can generally make it within a couple of laps before ending a session during the heat of the day. That would be 90 to 110 here in southwest. I have a 72 row oil cooler and still on oem radiator. There are no real good aftermarket radiators other than Ron Davis racing radiators and it is an ac delete. I here Koyo makes a decent radiator and it is an ac as well. I have vents in my bumper and Trackspec vents in hood.
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