Here we go again... radiators

It kept oveheating.. was really pissing me off... Napa 272310 fan clutch... life is happy... interstate can rock a/c and 75mph.. can't rock a/c on the trail, but it stay cool w/o the a/c.. we'll call it a win!
 
If you want to talk about a Griffin radiator, hold up a week or so. We're in the middle of getting two of them for the Petty Cash road race XJ and the Petty Cash/Team NAXJA Ultra4 XJ.

Any updates on how well the Griffin radiators are working in the summer's heat?
 
Boiling point is raised by the pressure so whatever you've heard before is not correct. That is why systems are engineered scientifically. Water under pressure takes more heat. The problem is gearing, tire size, tire width, tire weight, vehicle weight, oil, percentage of road grade inclined or declined ect... ect... The added heat of the resistance caused by all these variables changes the engineering design and calculations minimally can be drastic. The system is designed to allow water at the correct percentage of coolant to work properly. The coolant must stay in the radiator long enough to allow the coolant to exchange the heat carried. When the temp or load increases the cooling period must also but in fact decreases because the thermostat is now open allowing the water to flow freely and keeping it from sitting in the radiator to cool. When this happens the heat in the water (temp) increases exponentially making it almost impossible to cool. Cures are bigger radiators if room allows, including slower water flow (not a good choice) hence the high thermostat temp ratings for XJ's, or removing some of the added variables. I have seen secondary radiators once on an FJ40 Landcruiser roof but what a pain to burp and run efficiently.
 
Any updates on how well the Griffin radiators are working in the summer's heat?

Its so hot we havent even installed it into the KOH car yet.

The Petty Cash road race car is running the Griffon radiator. He raced his last race with no fans at all, and only got warm when he had to come to a near stop. It most surely cools more than the CSF 3 row's we were both running prior.
 
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