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Old 03-18-2009, 02:36 AM   #8 (permalink)
Bicycle Bob
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You can probably get at least as much benefit as the average large grille block without affecting cooling if you construct proper ductwork from the most suitable parts of the current openings and block the rest. It is important to keep it smooth and airtight, with attached airflow. I've seen the standard reference on how to do race car intakes around here somewhere. Taking advantage of natural pressure differences is more efficient than running a fan. If you do a belly pan, pay attention to air exits. What goes in must go out.
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