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    Normal Operating temperature with aluminum RPM heads?

    Check the outlet temperature of the coolant heading to the radiator and near the temp sensor with your temp gun. Then check the various areas of the radiator to see if you might have an area of the radiator that’s plugged. Also check the temperature near the lower radiator hose. This will...
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    Normal Operating temperature with aluminum RPM heads?

    My engines run around their thermostat temperature or just a bit higher on a hot day. 220 is on the warm side for anything older that I’ve run. If your thermostat is bad it can make it run too hot. I’m not sure if a coolant flush will make a huge difference. How good is your radiator...
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