SonexBuilders.net

Edit: The original numbers were quite wrong! The correct numbers are now below.

Cross posting this here for future reference.

I researched several K&N filters when I was selecting my Jabiru 3300 filter. According to K&N's calculator, the Jabiru 3300 needs 32 sq inches of filter area for 200 cu in displacement at 3300 rpm. I use the RU-0630, and it just fits between the AeroInjector and the engine mount tubing (tail dragger). It's oversized, but it has been working great!

My full results are below.

All these filters will clamp right onto the 2.25" diameter bell mouth of an Aerocarb or AeroInjector using the included hose clamp.

Filter # / Dia (in) / Height (in) / Effective Area (sq in) / Notes
RC-1950 / 4.5 / 2 / 24 / Chrome top
RC-0650 / 5.5 / 2.5 / 37 / Large and round; chrome top
RU-0650 / 5.5 / 2.5 / 37 / Large and round; 3/4" Off-center Flange
RU-0660 / 5.5 / 3 / 45 / Large and round; taller than 0650; 3/4" Off-center Flange
RU-0630 / 4.5 / 4 / 47 / Tall and skinny; centered opening
RB-0600 / 3.5 / 4 / 35 / Tall and skinny; 5 Deg Offset Flange Angle
RU-1710 / 3.5 / 5 / 43 / Tall and skinny; 20 Deg Offset Flange Angle
E-3120 / 4 /2 / 20 / Direct size replacement for the Sonex paper filter element

Jeff

Jeff
Do you know if these filters will work on both type of Engine Mounts? (Tri-Gear and conventional)