Another air cleaner element (Fram CA3333) makes sure no loose charcoal dust is expelled from the filter. The frame is built of birch ply and the plumbing is simple PVC.

A replacement oval air cleaner element was ordered from Summit Racing Equipment. A wide groove in the base (visible in the previous photo) holds the element in place. See All 23 Photos.

We showcase some of the interesting styles and types of air cleaners ... ($52.95) has a raised base and a 2-inch-tall filter, PN SUM-3237 ($58.95) has a raised base with a 4-inch-tall element ...