I'm curious, what size is your filter?  I have a K&N cylindrical style filter, that's 6" long, and 3.5" diameter, and is made to fit over a 2.5" diameter flange. 

        The one that I wrecked was cylindrical, 11" long, 3.5" dia, 2.25" inlet, if I recall correctly. I'm at work right now, working 10 days of 12 hr night shifts for a maintenance shutdown- blaagghh!

        The one I have on order is a flat panel 10"x4.125"x1.25".

 I wish I had some sort of filter or screen between the turbo and intake.  A broken compressor blade would ruin your day. 

        I've got one. I call it an intercooler. Seriously though, I doubt anything will get through cooling tubes and it would take allot of debris to completely plug it.

S. Todd Bartrim
Turbo 13B rotary powered
RX-9endurance (FWF)
C-FSTB (reserved)
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

        "Imagination is more important than knowledge"
                                        -Albert Einstein