Spawn Aerodynamics - Bullittes CF build thread.

[miguez]

Originally Posted by RCZ

They MAY actually already be perfectly positioned to suit us. More to the middle and its right over the filter. I know you are trying to keep the air trapped in that section and to ram it in there guys, but the air needs to flow somewhere to create cold air flow over the filters. Otherwise it fills up with turbulent air and actually defeats the purpose for having the vents on the front as wind wont flow in as easily. Then again it is going through the radiator too...so there is flow and we should try to ram the air into the intakes... discuss?

There is some flow behind the bumper, so openings like Mine's would work, even if they don't ram the air on top of the filters.

If someone is interested in ramming air into the intake, then ModShack's approach, modified for the Stillen intake, is the easiest/cleanest. Using the openings by the fangs, and a hose to connect those to an air box (a cylinder) that fits right around the filters. In that case, since the route has a large vertical displacement from the bottom to the top of the bumper, very few droplets of water would actually make it to the filter, and those would be caught by the filter element.

Trying to ram air from somewhere like the Mine's openings would require a path that would first travel down or back, before turning around, so that the water would be trapped there through gravity or inertia, respectively. There is room to travel down, but in that case once again ModShack's approach makes more sense. There is little room to travel back, so that's probably out of the question.

My opinion then is that the Mine's openings should be considered but not in the ramming fashion, simply to get fresh air behind the top of the bumper, and therefore into the Stillen intake. One could even optimize it a little by having a simple 90º elbow turned inboard from the opening, but without an extension or hose connecting it to the filters.