Air Box

Update 11/17/2003 Read NOTE below on the anodized ring!

The filtered air box is designed to take ram air from the intake of the cowling, pass the air through a filter, and into the induction of the engine. In my case, due to the throttle body of the fuel injection, my air box did not line up with the intake scoop of the cowling. The plans for the fuel injection say , "some modification may be required." Some? Try lots!

Here you can see the rear of the air box hitting the nose wheel leg. The air box sits a couple inches lower than it would if I have a carburetor. This required notching the fiberglass for the gear leg, taking into consideration the rocking back and forth of a running engine. Once a suitable chunk was removed, new fiberglass was laid up. 

Here is a front left view of the box installed. NOTE: The gold anodized ring supporting the box goes INSIDE the airbox to improve airflow into the fuel meter. I flew mine 1000hrs before fixing it. There was no noticeable difference either way. But DON'T install it as shown here.

The second problem was the intake of the air box did not line up with the intake of the cowl. (update 11/17/2003: cause I installed it wrong!. Thats why!)  I had to modify the front part of the air box to effectively raise the intake up a bit and make the mouth larger.

One "good news" item was I did not have to do anything to the cowl as recommended on the plans. I did not have to fabricate the fiberglass extension from the cowl to match the air box. My modification to the air box made the distance from the cowling a mere 1 1/2 inches. Perfect for the rubber strip  on the front of the air box to handle for me.  AGAIN The gold anodized ring supporting the box goes INSIDE the airbox to improve airflow into the fuel meter. I flew mine 1000hrs before fixing it. There was no noticeable difference either way. But DON'T install it as shown here.