Heat soak - vented hood options that are not "louvered"

phunk

Well... I think that each vent in a steep louver will hurt the venturi effect of the louver in front of it by putting another high pressure area too close. But, if you think about it... you may not need a venturi effect anyway.

I think that it depends on the scenario. If your car has a problem with too much air pressure in the engine bay and under the car, then you dont even need a venturi to get the air to leave that hood vent... its going to just leave because of the pressure differential. Aggressive venting would be fine for that.

But if your car doesnt really have an issue with pressure in the bay and forcing pressure under the car... then mass hood vents may not even do anything at all... there is pressure on the hood already, so the pressure in your bay better be higher than the pressure on the hood otherwise air is not going to be leaving hood vents without a vacuum effect from a venturi.

I think the GTr posted above sort of supports my theory. I am willing to bet that the steep louvers in front are ducted from the radiator allowing mass airflow... so there is minimal pressure in the engine bay because of this, and then behind that ducting they use the venturi louvers to pull air out above the intake manifold to reduce pressure under the car and reduce underhood temps.

maybe???

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