Yep thanks, the fan is quite close to the radiator, about 1/2". I finally installed the 45 amp 3500+ CFM monster fan into the shroud and put on a variable thermostatic sensor to trigger the fan, set it at 160 degrees for now and the car runs 195 degrees fully warmed up this summer in 90-100F ambient most all of the time, and that takes about half an hour of driving to achieve. I might push the fan trigger up to 180. Heats up to 200F in temperatures over 100F ambient, but that's also not a superfun time of day to be cruising anyhow. Did hit 215 on a 107F day in town, but then what a loon I was to take it out then LOL
, I think I too hit 107 by that time! It will run 180-185 on a cooler day, say 80F degrees ambient.
Come to think of it, I reread this thread and never did fully open my heater core to be sure it doesn't contain trapped air that might enter the system at some time. I'll do it.
This winter I'm going to front-shroud the radiator for perhaps a bit more cooling air entry.
Regards and thanks!
Dirk