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Sorry for posting another overheating post. I did some tests and wanted to confirm my suspensions before buying new parts. I got the Champion 3 row radiator with their electric fans, but I still have overheating issues at idle and low speeds on hot days (+90 deg F). I've tried putting in a 165F thermostat and water wetter, but no success. The current electric fan has a flow rating of 890 CFM. I currently have two installed with a shroud. I read on another post that these fans don't have enough flow and should get fans that'll give me above 2500 CFM total. Before I buy those fans, I did some testing today. I got a cheap 20" fan and put it in front of my car to see if the extra flow will help. These are all at idle and it was about 70F outside. Since it wasn't hot outside, the car didn't overheat with the radiator fans turned on, so I initially turned off all fans to get the car hot. 1. Idle, No fans - Temp increased to 220 F 2. Turned on radiator fan - No change in temp 3. Turned on 20" fan - Temp decreased to 190 F 4. Turned off 20" fan - No change in Temp 5. Turned off radiator fan - Temp increase to 220 F 6. Turned on radiator fan - No change in temp 7. Turned on 20" fan - Temp decreased to 190 F 8. Turned off radiator fan (20" fan still on) - Temp slow increased 9. Turned on radiator fan - Temp went back down to 190 F I should do this when it's hotter outside, but from these results, it seems like a higher flow fans will help and it's not about water pump not being able to flow enough water or something else. What do you guys think? Any inputs welcome! Thanks
