Mark,
Thank you for your post. Once again a victim of over simplifying a post. The
biggest single problem I am aware of with running auto gas is if someone does
not fly regularly enough, it has a tendency to varnish and gum up a carb worse
than avgas.
Some engines by their basic setup will be literally un-effected by octane,
while as you said others who are closer to maxing that octane out will be.
Mostly what I have seen is that the ones that need adjustments, typically need
small timing resetting, and base idle speed and mixture setting, if they run
differently.
The only other negative I have seen is some warning from Cessna that they
believe that the alcohol from auto fuel will damage some of their fuel tanks,
maybe they have some kind of liner in them. Those owners would need to check
with Cessna. My particular KR was run and flown on aut gas and I did run up on
the ground with it, with no problems. Like you said if it were initially set
up on 93-94 octane, one should be able to change back and forth with no
consequences.
Colin & Bev Rainey
KR2(td) N96TA
Sanford, FL
crain...@cfl.rr.com
or crbrn9...@hotmail.com
http://kr-builder.org/Colin/index.html
