DIY: Vented Aluminum Hood
09-27-2005, 07:55 AM
#21
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Thanks for the compliments. My car is a daily driver and I live in Seattle so it does see a fair amount of rain which doesn't seem to be an issue. As others with vented hoods have mentioned, you can see the heat waves pouring out of the hood when stopped. At speed, initial testing has shown about a 20 degree drop in intake temps which is fairly significant considering I have already performed several other modifications that have reduced intake temps measured via OBD-II from the intake air temp sensor.
I believe that there is enough of a pressure differential between the top surface of the hood and the engine bay/under car to cause flow out of the hood without the need for additional vent geometry such as an upswept leading edge etc. I will attach some streamers to the hood and vents and verify this on the freeway.
One could also make a rain channel very easily. I may work on this in the winter for the heck of it.
I believe that there is enough of a pressure differential between the top surface of the hood and the engine bay/under car to cause flow out of the hood without the need for additional vent geometry such as an upswept leading edge etc. I will attach some streamers to the hood and vents and verify this on the freeway.
One could also make a rain channel very easily. I may work on this in the winter for the heck of it.
09-27-2005, 08:09 AM
#22
Join Date: Jan 2003
Location: Gods Speed #57 Lemons #77
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That looks great and functional too 
I have a sneaking feeling that if I attempted this it *might* not turn out so pretty
Guess I'll just have to keep an eye out for used Silverstone (or black) hoods.
I have a sneaking feeling that if I attempted this it *might* not turn out so pretty
Guess I'll just have to keep an eye out for used Silverstone (or black) hoods.
09-27-2005, 08:26 AM
#23
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That looks amazing, i wish i could do it my self but i don't have drills and all those air tools. By the way i like your front air splitter did you do that yourself too or did you buy it? If it's a DYI how can i make one with the cables attached to it? Thanks
09-27-2005, 09:57 AM
#24
Do you have any pics showing the sheet metal clips on the underside?
I like the look and the fact that it is only on one side. I would love it if there was someway to raise the leading edge so that it created a small low pressure area but you can't have everything I guess.
I like the look and the fact that it is only on one side. I would love it if there was someway to raise the leading edge so that it created a small low pressure area but you can't have everything I guess.
