ORIGINAL: Sport_Pilot
Aircraft engines are run richer than automobile engines on the ground and
at takeoff. Not sloppy rich but a lot richer. They also have looser
clearances because of the huge differances of cooling on the ground
and in the air. As a result there is a lot of blowby till they get into the
air and are running at operating temps. Still even without detergent oil
they do not glaze if you follow their break in procedures.
I don't know where this load of misinformation came from.
Aircraft engines are set to run with a perfect fuel/air mixture at sea level
They are
not set to run rich on the ground. Running rich will cut
down on the power available, which is
full power. As the aircraft
climbs the mixture become richer than at sea level, the same as your
car does....losing power at high altitude.
This is when the mixture control of the carb is leaned out. This allows the
engine to once again make full power, adds to the fuel consumption
(mileage) and prevents
harm coming to the engine from a too
rich mixture. Spark plug fouling, oil contamination and other problems
that
need to be avoided.
Aircraft engines do
not have looser clearances on the ground than
they do in there air. This is about as foolish a notion as I have ever heard.
As a result there is a lot of blowby till they get into the
air and are running at operating temps.
There better not be
any blow-by in the aircraft engine at any time.
Most aircraft engines use an extra set of rings to insure that ring seal and
compression are kept as perfect as humanly possible, and that blow-by
is eliminated at all times.
Sport pilot, please quit quoting me, and bringing up these stupid notions just
to try and prove me wrong about something.
I am quite sick of your badgering. Get some facts instead of these mindless
claims. And BTW, I am a Private Pilot. Don't try to B.S. me with this stuff.
FBD.