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Re: REFLECTOR: Re: stainless exhaust length
I knew as soon as I clicked send, that someone would be asking those
My EMT prop is a true constant speed prop which is controlled by a prop
governor on a Lycoming LIO360.
My exhaust was made by Scott Swing at Velocity to come straight back and turn
down at approx. 90 degree angle. I cut the tips off at approx. 45 degrees as
opposed to straight off and allowed them to extend below the cowl about two
Each exhaust stack comes in two pieces which have a slip joint between the
two pipes connected to the heads, these are not to be clamped or welded
because they are for expansion and contraction of the pipes. This is supposed
to stop the problems of exhaust cracking. So far so good, no cracks have
developed in mine.
We purchased some heat shield wrap for the exhaust and installed it per the
instructions. My advise is don't fool with this, it only lasted about 50
hours of flight, then it started to decompose and fall off.
I am running about 60 degrees C in the engine compartment. On a normal temp
day of approximately 15 to 20 degrees C outside air temp. That measurement is
taken from the upper right hand corner of the cowl area next to the firewall.
I also recommend making your armpit scoops a bit larger than per the manual.
This may slow you down a knot or two but the better cooling pays off. I also
highly recommend the plenum chamber for cooling.
We took our induction air out of the same scoop as the right side cooling air
in stead of building an additional scoop.