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Steve,
Sounds like you'll also need to insulate the turbo lines to keep the
coolant below the boiling point during the cool down period.
Mark S.
At 03:48 PM 9/21/2004 -0400, you wrote:
Mark,
I suspect that you are
right about that. I'm going to replumb the header tank, and pull it
out of the top of the thermostat housing by itself.
Steve
- -----Original Message-----
- From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]On
Behalf Of Mark Steitle
- Sent: Monday, September 20, 2004 8:39 AM
- To: Rotary motors in aircraft
- Subject: [FlyRotary] Re: Still high temperature
- Steve,
- If you'll accept a comment from someone who isn't flying (yet), I
would like to make a suggestion. My 3-rotor had the same symptoms
(gurgling in the purge tank) upon shutdown. My problem turned out
to be a radiator supply line too close to the exhaust. It was fine
as long as the coolant was circulating. As soon as I shut it down,
the coolant would reach boiling point and it would spit and gurgle for
about 5 minutes. I would be suspicious of the coolant lines to your
turbo.
- Mark S.
- Subject: [FlyRotary] Still high
temperature
-
- I would appreciate input to a problem that I have. I just
overhauled the
- engine, and reworked the cooling system. I'm now using the A/C
evaporator
- cores for radiators. The problem I'm having is, that when I
take it up, I'm
- seeing coolant and oil temperature of about 210 degrees. That
is climbing
- to pattern, leveling off, and throttling back to low power. The
oil stays
- pretty much where it is, and the coolant come down just a couple of
degrees.
-
- When throttle back to land, the coolant and oil both come down to
about 180
- at touchdown. I taxi back to the hanger and shut down with oil
and coolant
- about 190-195, but after shut down, I get all sorts of gurgling
noises from
- the header tank, which is fed by the tap on the side of the
thermostat
- housing. The gurgling noises go on for 5-6 minutes, which would
seem like
- the engine is overheated, but while hot, it doesn't seem overly hot.
The
- other end of the header tank feeds coolant to the turbo, so maybe the
hot
- water is coming from it ? Maybe my header tank should be fed
differently ?
- Also at this time, after a short flight, there is only a couple of
cups of
- additional coolant in the overflow
tank.
-
- I assume that the higher than desired coolant temperature, and the
gurgling
- noise are related. I pulled the water pump off today to double
check it,
- and all seems OK. The pump only has about 10 hours on it.
When I run it on
- the ground, and feel the radiators after shutdown, they are uniformly
hot.
- I put a furnace blower pointed at the scoop, and I'm getting very
even
- airflow through the radiators. The oil cooler, on the other
hand, has about
- 75% of the air going through the middle of the cooler, so I'm going
to have
- to add some deflectors in the plenum to push more air to the
outside. That
- seems to be a less significant issue at the
present.
-
- Any thoughts ?
-
- Steve Brooks
- Cozy MKIV
- Turbo rotary
-
-
- >> Homepage:
http://www.flyrotary.com/
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