Perry Mick wrote:

Perry,
A word to the wise- scat tubing will collapse under vaccum. I recall that an RV series of aircraft crashed because of a collapsed scat tube which fed air into the carb. Putting the scat tubing between the carb/throttle body and engine is really asking for it, in my humble opinion.
Brian Trubee

Thanks for the warning Brian.  The 3" SCAT I have in my plane now is
between the airflow sensor and the throttle, which if I understand
correctly is probably closer to atmospheric pressure than on the other
side of the throttle (between throttle and engine).

Perry

True Perry. 15 psi can play hell with what looks like real strong
tubing. 

BTW Tracy Saylor of worlds fastest RV6 fame just told me he
ruined an Lyc engine by sucking in parts of the .032 aluminum air box.
Apparently small enough pieces broke off to pass through
the intake valves. Fortunately it did not quit. That is an area
of the engine you don't mess around with. The engine needs three
things to keep running.... air, fuel and spark.

Paul Lamar
 
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