personally monte...I think we need to spend some quality time together on the trail rig cooling issues! That involves the use of thermocouples, cooling system pressure test instruments, and a couplea infrared thermometers. The "temp" reading on the oem instrument really don't mean squat until it's been verified. And 230f onna temp gauge ain't hot as long as the numbers come back down once the "load" is reduced. That's how this stuff is supposed ta work! Increased load = increased heat= increased heat to be transfered to the surrounding atmosphere in our case!
As Chad sez (and you and I have discussed), I'm not a sparkfan fan. But if properly executed, they can be effective. And first off...the entire electrical system needs to be up to snuff! A properly done sparkfan eats amps like I eat chili and chupee!
And then the fan has to create full airflow across the heat exchanger in coordination with the engine cooling requirements, in harmony with the thermostatic control. That's why "modern" rigs can use sparkfans, a computer makes all the decisions based upon sensory input well in advance of "need", not several different mechanical devices fighting each other.
And most all those rigs are bottom breathers or combo breathers with airflow management technology far removed from that sheet of plywood aka "Scout II" that is lumbering down the road/trail!
That's why oldskool deetroit v8 motors go hand-in-hand with engine driven fans and proper heat exchange capacity which incorporate a shroud to maximize sukkage at the proper moment in time!
