Work on the Filtered Air Box. This has been an ongoing project due to, what I believe is an afterthought for an alternate air door. The filter is held between the VA-130-C Mount Plate and the VA-130-D Filter Plate by 5 bolts. The Bolts protrude below the Filter Plate therefore filter cannot seal against the VA-130-A Air Box; there is a gap between them. When an opening is cut on the Filter Plate and the Air Box to provide access for the alternate air to the carburetor unfiltered air will enter the carburetor between these openings at all time. Earlier I built a fiberglass tunnel at the circular opening of the Air Box to reach to the edge of the hole on the Filter Plate. To provide a seal I cut a thick wall (1/4”) 2-3/4” hose long enough to reach between the Air Box and the Filter Plate. This hose fits snug around the outside diameter of the tunnel I made earlier. To create a smooth surface at the Filter Plate I coated the upper end of the hose with high temperature RTV (let it cure overnight). I experimented with an additional idea using first a ¼”Styrofoam sheet. I cut that sheet to lie under the filter to serve as a seal the same way as if I could have lowered the filter to the Air Box. Just filling the gap between the Air Box and the Filter Plate. Also cut the hole in the Styrofoam for the alternate air opening. It looked like this could work so I substituted for the Styrofoam with a high density ¼” rubber sheet. This will seal by having the filter’s rubber edge push into the rubber sheet. The inside of the rubber sheet can be cut around the outside diameter of the rubber hose and the hole can be quite generous. I will consider this as a backup for a better seal.
