Cool air, 'ram air' has been proven false.
I think its agent 47 or something the like...
what do you mean its been proven false?
what do you mean its been proven false?
I spoke to a Ford engineer that worked on the 03/04 Mach 1 about the ram effect of the factory Shaker hood scoop. I was told that in testing, Ford saw a 25hp improvement at speeds above 80 mph. Contemporary testing at dragstrips showed slower ET's when the Shaker scoop was plugged shut versus leaving it open, so there's some power to be had with this very low boost ram effect.
Ram air creates an increase in boost by using the stagnation pressure of the airstream to increase manifold pressure. The increase in boost can be calculated by Bernoulli's equation and is equal to one half of the air density multiplied by the square of the velocity. For an 80 mile an hour car, the velocity is about 35.75 meters per second. Air density is about 1.2 kg/cubic meter. Therefore the increase in boost would be about 767 pascals or 0.767 kilopascals. By comparison, my supercharger runs at 10.1 psi of boost (69.64 kPa) and adds about 200Hp over stock. By linear interpolation, the ram air effect would then account for about 2.2HP. Depending on the shape (aerodynamic drag) of the scoop, that much power could actually be lost in extra drag. The primary effect of ram air is to introduce cold dense air into the intake rather than heated (expanded) air from under the hood.
LOL, I've been totally outdone
How does the ram air setup in the 03/04 mach1 block out rain and still allow the airflow?
The Mach 1 set up is open in two places, one to the shaker and the other to the fender, I don't see how this produces any positive pressure. I could believe that the power and lower ET is due to an abundant source of cool air and better flow in general to the air box.
Dan
I changed my air filter often in my '03 Mach 1 (daily driver) and was always amazed how dirty the filter was right where the Shaker inlet tube was pointing at the filter. This tells me that disproportionate amount of air was getting to the airbox from the Shaker as opposed to the fender opening side.
I changed my air filter often in my '03 Mach 1 (daily driver) and was always amazed how dirty the filter was right where the Shaker inlet tube was pointing at the filter. This tells me that disproportionate amount of air was getting to the airbox from the Shaker as opposed to the fender opening side.
Or is it possibly catching more of the *****, emissions, etc coming from the car you're tailgating going directly into the intake whereas having the filter behind the fender uses the fender to protect against that stuff?
I saw the above post on the hydrolock protection with ram air systems. Does anyone have a diagram or picture of such a set up? I've spent weeks trying to figure out how they did and never found anything all that helpful. Coming from a guy in Seattle who says it works, I can believe it because Washington is rainy as hell. However, I just don't see a ram air (a true one, anyways) being able to prevent all that water from reaching the engine.
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