got bored made ram air kit
I'm curious to see this 'ram air' intake.
BTW, there's really no such thing as 'ram air' intake on street cars. You don't go fast enough to pressurize the air to make any difference. Oh, and the longer you make the tubing, the more of a natural restriction you will produce. Your experiment, just considering the scientific side, will not make much of a difference. Believe it or not, the stock intake past the TB is pretty efficient. It has very few bends, it's relatively short, it produces good, laminar flow and most importantly, it draws fairly cool air from the front of the car. If you put a well flowing filter in it, you'll be hard pressed to make it better.
Because someone already has explained this very well, I'll redirect you to the below post here which really drives the point across why ram air is a myth.:
http://forums.corvetteforum.com/c5-t...tml?forum_id=1
I can give you a brief summary, ram air intakes are good on things that go very fast, like airplanes (300mph+). At speeds around 80mph, the gain of pressure from 'ram air' is less then 1%, Lol. Further more, it is important to understand intake resonance and why air boxes are good and design specifically for each car. Shade tree mechanics will swear by their ad-hoc creations but I usually side on the side of science confirmed by real world experiments. In reality, a lot of work and design goes into intakes. More often than not, most experiments like yours that lack correct instruments to measure the right variables (I assume you don't have a flow bench and other things to measure/characterize the flow) end up coming up short. Good luck and keep us posted on your results.
BTW, there's really no such thing as 'ram air' intake on street cars. You don't go fast enough to pressurize the air to make any difference. Oh, and the longer you make the tubing, the more of a natural restriction you will produce. Your experiment, just considering the scientific side, will not make much of a difference. Believe it or not, the stock intake past the TB is pretty efficient. It has very few bends, it's relatively short, it produces good, laminar flow and most importantly, it draws fairly cool air from the front of the car. If you put a well flowing filter in it, you'll be hard pressed to make it better.
Because someone already has explained this very well, I'll redirect you to the below post here which really drives the point across why ram air is a myth.:
http://forums.corvetteforum.com/c5-t...tml?forum_id=1
I can give you a brief summary, ram air intakes are good on things that go very fast, like airplanes (300mph+). At speeds around 80mph, the gain of pressure from 'ram air' is less then 1%, Lol. Further more, it is important to understand intake resonance and why air boxes are good and design specifically for each car. Shade tree mechanics will swear by their ad-hoc creations but I usually side on the side of science confirmed by real world experiments. In reality, a lot of work and design goes into intakes. More often than not, most experiments like yours that lack correct instruments to measure the right variables (I assume you don't have a flow bench and other things to measure/characterize the flow) end up coming up short. Good luck and keep us posted on your results.
Last edited by Ziggyrama; Jan 24, 2009 at 04:59 AM.
I read a few years ago that some guy had a ram air transam (WS6?).
The guy had installed a boost gauge in preparation for a supercharger install. He took the car out on the road (still NA) and at high speeds, the car made 1 or 2 psi from the factory ram air scoops.
I'm not trying to refute your explanation, just adding some more info.
The guy had installed a boost gauge in preparation for a supercharger install. He took the car out on the road (still NA) and at high speeds, the car made 1 or 2 psi from the factory ram air scoops.
I'm not trying to refute your explanation, just adding some more info.
I'm curious to see this 'ram air' intake.
BTW, there's really no such thing as 'ram air' intake on street cars. You don't go fast enough to pressurize the air to make any difference. Oh, and the longer you make the tubing, the more of a natural restriction you will produce. Your experiment, just considering the scientific side, will not make much of a difference. Believe it or not, the stock intake past the TB is pretty efficient. It has very few bends, it's relatively short, it produces good, laminar flow and most importantly, it draws fairly cool air from the front of the car. If you put a well flowing filter in it, you'll be hard pressed to make it better.
Because someone already has explained this very well, I'll redirect you to the below post here which really drives the point across why ram air is a myth.:
http://forums.corvetteforum.com/c5-t...tml?forum_id=1
I can give you a brief summary, ram air intakes are good on things that go very fast, like airplanes (300mph+). At speeds around 80mph, the gain of pressure from 'ram air' is less then 1%, Lol. Further more, it is important to understand intake resonance and why air boxes are good and design specifically for each car. Shade tree mechanics will swear by their ad-hoc creations but I usually side on the side of science confirmed by real world experiments. In reality, a lot of work and design goes into intakes. More often than not, most experiments like yours that lack correct instruments to measure the right variables (I assume you don't have a flow bench and other things to measure/characterize the flow) end up coming up short. Good luck and keep us posted on your results.
BTW, there's really no such thing as 'ram air' intake on street cars. You don't go fast enough to pressurize the air to make any difference. Oh, and the longer you make the tubing, the more of a natural restriction you will produce. Your experiment, just considering the scientific side, will not make much of a difference. Believe it or not, the stock intake past the TB is pretty efficient. It has very few bends, it's relatively short, it produces good, laminar flow and most importantly, it draws fairly cool air from the front of the car. If you put a well flowing filter in it, you'll be hard pressed to make it better.
Because someone already has explained this very well, I'll redirect you to the below post here which really drives the point across why ram air is a myth.:
http://forums.corvetteforum.com/c5-t...tml?forum_id=1
I can give you a brief summary, ram air intakes are good on things that go very fast, like airplanes (300mph+). At speeds around 80mph, the gain of pressure from 'ram air' is less then 1%, Lol. Further more, it is important to understand intake resonance and why air boxes are good and design specifically for each car. Shade tree mechanics will swear by their ad-hoc creations but I usually side on the side of science confirmed by real world experiments. In reality, a lot of work and design goes into intakes. More often than not, most experiments like yours that lack correct instruments to measure the right variables (I assume you don't have a flow bench and other things to measure/characterize the flow) end up coming up short. Good luck and keep us posted on your results.
Now as for owners designing their own ram air system, chances are it will be a failure. Pulling air in from near the bottom of the car is not going work. Additionally, if you take away the relatively air tight seal of the OEM airbox and air tract, you completely ruin the pressurization effect of the OEM design. Simply running a piece of pipe near an open filter WILL NOT result in a ram air effect.
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