At 02:45 PM 7/29/99 EDT, CALXA wrote:
"Jack,
There is a fitting available from Skyport=---or your AI could make
one"-etc.,
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CALXA
First of all I want to thank you for the research you did
regarding my
problem. I really appreciate it.
My AI will not do anything that is not approved by the FAA. I
recently
checked the Continental people and found the standard vent elbow goes for
about $125.00. Brace yourself, the new extended elbow costs more than
$100.00 more than that. I had my AI pull the fuel pump and look at the
elbow only to find that I already had the new modified Continental elbow.
My vent line has already been routed over the cylinders to the
rear near
the firewall and extends down and slightly through the lower cowl. If the
pipe end where it sticks through the cowl is cut at the wrong angle it can
either cause a back pressure or create a vacuum.
There already is a 1/8 dia hole drilled in the top of the rear
elbow where
the vent pipe goes down to the bottom cowl. There is also a louver cut in
the down pipe that allows any pressure in the pipe to neutralize to zero.
I recently had the Coupe in maintenance and stopped every single
oil leak.
After about 10 hours I can no longer find a single oil leak or wet spot.
Please understand, oil consumption is not the problem, I presently
have
over 7 hours on the last quart of oil and it isn't down to the 3 qt line
yet.
When I bought the plane the previous owner said to never fill
above the 3
qt line because the 4th qt would blow out fast. He was right because when
I
cruised at 2575 rpm I would loose about 1 qt of oil in 9/10 of an hour.
Now
I fill to the 4qt line, climb out at full throttle (2300rpm) and then
level
out and throttle back to 2300 rpm. This way the 4th qt of oil lasts about
7
or 8 hours.
So, oil use is not the problem, the problem is the wet belly. It
doesn't
really take much oil coming out the vent pipe to keep the belly soaked
with
oil. Now you can see why I asked about a separator.
As I see it, the only thing left would be an oil/air separator
that would
drain any oil in the vent line back into the engine, but I don't know if
one has been approved and is available.
Jack G.(U42)Utah
1946, Mod 415D
N103JF, SN:745
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