Having issue with my cooling fan running all the time. When it does shut off its not for long. Lots of differing opinions on what temp switch should be used with certain degree thermostats. So I thought I would ask here, for more differing opinions!
Turbo 390 in a 50 F1, Champion 3 core drop in fit. (fits great too) Homemade flat shroud that covers entire surface but not as deep as I would have liked it, maybe 3/8" deep. One 14" high flow Spal and one 7.5" Spal. Both pulling. Only running the big fan as it seems to keep up fine, figured only kick the little one if it gets hot. Or thought run it all the time to reduce cycle time of the large one. Really need to add another switch or get a dual temp. Probably a dual temp, I'm out of ports.. Kick the little one in early then the big one is how I would really like it. Kinda like a 2 speed fan.
180* stat with couple small holes drilled for bubbles. Engine does not over heat, haven't seen it much above 200 usually around 190 to 195. Fan switch is 200 on and 180 off installed in thermostat housing. Used a 195 stat for awhile which I'm fine with but I'm trying to drop the temp a little for fueling reasons. (heavy ends in lpg fuel). Hence the 180*
Do I need a switch with a lower range? Say 185 on 175 off?? Need more airflow? I didn't think so since it doesn't overheat. If both fans are on it does seem to help but not much.