For rad I run a surplus heatercore, 2-pass, frontal (finned) area is 120x240mm, thickness of 40mm. Fan is a 24V comair rotron Major DC (235cfm max flow, 0.768" h2o max pressure), ducted 70mm from the radiator. Fan usually runs at 12V (current supply is variable 5-16V, planning to change it for a 24V PWM setup).
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