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I've been trying to make a cheap ram air system for my stang. I bought a 5.0 HO air cleaner at a swap meet, cut off the snorkels, added flex hose and hose adapters that would mount behind the grill area. Today I put my test mule through the paces, and measured the airflow in my lab calorimeter against a standard 289 style open element air filter. Both units had standard paper elements. Pictures are below. Here's what I found:
Style - Condition - Airflow @ 5" H2O
289 - Complete Assembly - 758 SCFM
5.0 - Complete Assembly - 480 SCFM
5.0 - Minus Hose Adapters - 470 SCFM
5.0 - Minus Hoses and Adapters - 725 SCFM
5.0 - Complete, Minus Element - 645 SCFM
Keep in mind that I haven't yet tested the carburetor to find out what it can flow. So what have I concluded from this?
There is something to be gained with an improved air filter element and hose design, which I will try in the near future. The duct adapters actually improve flow slightly, probably because they smooth the entry of the air. I will also plug this data into my computer, factor in the difference in inlet temperatures, and see if the loss of airflow is compensated for by the lower intake temps.
The pics aren't good. Don't ask, they just aren't!
ram air with hoses
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43714691.jpg
ram air test set-up
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43714693.jpg
289 open element filter
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43714696.jpg
The poster formerly known as JAV65
That's me on the left...
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43703237.jpg
Style - Condition - Airflow @ 5" H2O
289 - Complete Assembly - 758 SCFM
5.0 - Complete Assembly - 480 SCFM
5.0 - Minus Hose Adapters - 470 SCFM
5.0 - Minus Hoses and Adapters - 725 SCFM
5.0 - Complete, Minus Element - 645 SCFM
Keep in mind that I haven't yet tested the carburetor to find out what it can flow. So what have I concluded from this?
There is something to be gained with an improved air filter element and hose design, which I will try in the near future. The duct adapters actually improve flow slightly, probably because they smooth the entry of the air. I will also plug this data into my computer, factor in the difference in inlet temperatures, and see if the loss of airflow is compensated for by the lower intake temps.
The pics aren't good. Don't ask, they just aren't!
ram air with hoses
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43714691.jpg
ram air test set-up
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43714693.jpg
289 open element filter
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43714696.jpg
The poster formerly known as JAV65
That's me on the left...
http://albums.photopoint.com/j/View?u=1572917&a=11954864&p=43703237.jpg