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Originally Posted by AussieRCBasher
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Are you still running the viscous fan or electric? Why were you running the A/C also as you are introducing even more hot air through the engine radiator? The A/C fan will be on regardless as soon as you are over 105.
I actually got rid of my 3 core radiator as did not perform well in slow speeds as too much restriction to the air flow and can sometime actually start heating up the last core more rather than cooling it down.
What size tyre/diff ratio too as found re-gearing speed up the water pump and helped the auto not being so much under load. A separate cooler for the auto, not in front of the radiator otherwise just as bad as running the A/C when too hot, will help the engine temperature too.