Quote:
Originally Posted by secondchance
Cliff,
I understand your calculation and logic. Interestingly, when stock (with Marc's chip), 6th gear cruise (say 70-75) on 80-85 degree day (it's been awhile...) coolant temp would stabilize around 211-213. In 5th gear it would drop to 203-205 probably due to increased coolant flow. With one 1/8" hole coolant temp would maintain, if I remember correct, around 197-198 regardless of 5th or 6th gear - just my experience.
When I dropped in my 380 coolant temp went up a bit across the board. Also, after two blown OEM radiators I opted for non-plastic tank radiator and while at it figured I would try dual core/extra fin area option.
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Good Information.......thanks
Blown Radiators is not good.....kinda like the time my new water pump impeller became disconnected from the water pump shaft.
What you find cruising in 6th versus 5th is what I found also which I attributed to higher Coolant Flow Rates in 5th gear as you suggested.
Also your stock radiator (with
Marc's chip) coolant temperatures are a bit high (203 to 205 deg F) for an 85 deg F day but NORMAL for a Stock Radiator.
Basically your Coolant Temperature was in the range of your Cooling Fan Operational Limits set by
Marc's Chip (ON 205 deg F and OFF 200 Deg F). That is about what I am getting with my Ron Davis on a 90 deg F day. The Coolant temperature stays around 190 deg F and rise to Coolant Termperature Fan Operational Limits when in traffic on a 80 to 90 deg F Day. A 100 deg F + day is a bit hotter Coolant Temperatures
ALL with 180 deg F Thermostat and CLEAN Radiator/Oil Cooler/AC Condenser.