If the fan and radiator are unable to do what they are supposed to do, cooling efficiency would not improve. Corroded tubes are going to limit heat transfer. The only scientific *tests* I've seen show that more coolant flow will never inhibit cooling, every statement against that I've ever seen is anecdotal. At best you'd make no difference. If we were dealing with an open system or massive coolant capacity that could appear to occur. Put a garden hose in your radiator fill and let it leak out the upper hose, the engine will never warm up above thermostat temp, if that.
There would definitely not be a doubling of cooling efficiency if you pump the fluid out of the the block faster, it will be cooler, thus the differential in coolant temp and ambient is less, so you'd shed less heat each pass. But that just means your radiator isn't having to do as much work.
Even if you shed less heat each pass, you are still exposing the coolant to the radiator tubes at twice the rate, in my example. Restricting flow initiates boiling, which may or may not be indicated on a temp gauge.
Let's put it like this...if the OP's engine overheats, then coolant flowing too fast is reality. If it doesn't, then its not.
There would definitely not be a doubling of cooling efficiency if you pump the fluid out of the the block faster, it will be cooler, thus the differential in coolant temp and ambient is less, so you'd shed less heat each pass. But that just means your radiator isn't having to do as much work.
Even if you shed less heat each pass, you are still exposing the coolant to the radiator tubes at twice the rate, in my example. Restricting flow initiates boiling, which may or may not be indicated on a temp gauge.
Let's put it like this...if the OP's engine overheats, then coolant flowing too fast is reality. If it doesn't, then its not.
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