Reply to "Extra air to the engine bay"

I get it.  I ran into a similar issue with heating on my mid engine Subie Coupe. In the normal engine compartment, I had placed the radiator with 2 fans that sucked air in from the vent and louvers and blew the air downward.  Since I had dual Magnaflow mufflers in that same area, I had aluminum close out panels made to keep muffler heat from keeping increasing the ambient temperature around the radiator. 

The sheet metal guy went a bit crazy and added close out panels on the bottom of the space and put in dual naca ducts.  He was a knuckle head because he was thinking that the naca ducts would pull air up from underneath and push up air through the vents and louvers.  He never bothered to turn on the car and see which way the dual fans under the radiator were pulling the air.   The fans pulled the air in from the top and blew it down.    Duh!!  He had the whole system working against its self and the engine would never cool down.   I trashed the lower closeouts so the air now flows the way it is supposed to and the engine temperature stays at what it should for a Subie. ( about 180-190 F)

Live and Learn.    Physics always wins!!

I like the idea of the pop out louvers.  seems a bit more sexy that the rising scoop that you see on Porsches.  then again, What ever works the best.......... is the best.

 

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