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Desert Storm & Engine cover louvers

Yahoo Message Number: 13754
Desert Storm & Engine cover louvers >Colton Truck says and CC has just confirmed, that nothing >is wrong with the fan system. It's all functioning as designed.
Colton has fabricated a plate to redirect the air. CC tells me that >they have seen this fix before but their engineers are concerned >that this might create other problems.
Where does all the fan air exit engine compartment? Will not "a plate to redirect the air" block the main path for air to exit compartment? The Caterpillar web has a section about installation of generator engines with auxiliary equipment. They expect an engine installed in an engine building to use 8 to 12% of power to drive fan on radiator. That is 8-12% loss in a system built to run continuous full load without compromise for noise, weight limitations or compact arrangement.
How much is lost to spin the fan in a CC? Given the blockage of flow path after fan? Will not "a plate to redirect the air" block the main path for air to exit compartment? If latches are not set, my Inspire will blow the louvered rear engine hatch cover open, just driving across an RV park. I wonder how much less the fan would run without the large muffler to block air flow from engine bay. Maybe 5% less fuel? For a CC with solid hatch, might the addition of a louvered engine hatch save noise, fuel & overheating?

Eric Elliott
5 Inspire 51321