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Hi
Rusty;
As Mike has just pointed out you must return above the oil
level. I considered running my return to the front cover, but my options there
were limited, as I'm using the oil pump and feel comfortable tapping into the
turbo oil return line. Routing the oil to here would also be a long convoluted
run, trying to avoid the heat of the turbo and maintain a downward slope. I
ended up using a Parker SS bulkhead fitting through the wall of the oil pan,
forward of the level sensor & 1/2" from the top of oil pan. After much
procrastinating and trying to find an easier way, I finally removed the bottom
left engine mount, oil pan, installed the fitting, remounted the pan &
mount all in less than an hour, or about half the time I spent trying to find an
easier way. I then added 5 litres of oil and it was just below the level of the
port. This level should lower a little once oil fills the filter and cooler, so
should keep my return line above the oil level in most attitudes of co-ordinated
flight.
The picture of your engine with the oil filter
pad cut-off, shows that Bruce has tapped those holes with what looks like 3/8
pipe thread. You should return your oil to the top port. If you just return to
the normal port at the bottom of the engine, then you must still connect those 2
ports with the pipe plugs in them. If you don't your engine will get no oil. If
you only return to the top port then you will still have to "T" your feed line
to provide a pressure signal, not to mention oil for your PSRU and that turbo
that you know you will be installing.
You know, while at first thought, it seems a good idea
the way that Bruce has machined off the oil pad, it now seems to me that it is
better left on to allow mounting of a bypass plate where it is easy to tap off
oil for other uses. Of course you can still get oil for your turbo from the
front plate by drilling out the brass plug on the supply
line.
S. Todd Bartrim
Turbo 13B
RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm
"Whatever you vividly imagine, Ardently desire, Sincerely
believe in, Enthusiastically act upon, Must inevitably come to pass"
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