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Piston Engine Conversion Have you replaced your rotary with a V8 or any other type of piston engine? Tell us about it!

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Old 06-18-2013, 02:03 PM   #1
Pete_89T2
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Perhaps the radiator is internally clogged in spots, or has enough bent fins to impede airflow through it? Possibly a defective thermostat? Either would cause less than optimum cooling. You can visually check for bent fins. As for clogs, run your hand over the entire surface area of the rad and see if you feel any spots that are relatively cooler than the rest - that's where the clogs will be.

Ducting the radiator so air flows thru rather than around it should help. If either the radiator, its fan or ducting is deficient, you can expect temps to go up as you drive faster, as the engine is working harder and producing more heat.
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Old 06-18-2013, 04:59 PM   #2
mattallac
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Things I would do are 1 put a new thermostat in the car (180 degree), they are cheap. 2 there is a product for cummins diesel that is made to clean the motor and radiator while you drive , When I find my bottle I will get the name for you 3 drain your coolant and use 85% REd line water wetter and 15% red coolant ( toyota or gm ) the reason for the red is because it controls ph levels for motors that have aluminum parts . Also water pump blades could be rotted off .And if the radiator is clogged get an aluminum champion radiator from e bay , there is no epoxy in the radiator and they are 100% welder . I have one for an rx7 in a glc 12a car and the radiator works great ( I never pass 190) good luck
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