Not if they want to win :) Drag races are sometimes won on .001
seconds

True Paul, But then I don't really want to rebuild my engine every 20
seconds!
Bill Jepson

Touché. On the other hand Tracy has been flying his airplane off a
grass strip
for ten years and has not worn out an engine yet.

Paul Lamar

A grass strip and a dirt strip are hardly comparable.  Filtered air
should be an option when faced with a dusty situation.    It may not be
possible to fit it under the cowl, but if it can be done, it should be
done IMHP.     Jerry

Well then if you are concerned about it put in the bypass and feed it with
filtered air. There is no magic in filters. They all have pressure drops.
They all requires some sort of box. That means there will be a convoluted pipe
between the air intake and the filter. All that means there will be some HP
loss. Ask Tracy Crook and George Graham. Both said there was a night and day 
increase in power with a cold air/ram air scoop. In fact Tracy merely
had scat tubing running forward to a scoop on the front of the cowl.

I am open to suggestion. Send me a sketch or a 3D of what you think will 
work.

Paul Lamar
 
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