From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Friday, July 02, 2004 12:49
AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: remote
oil adapter
I bought this remote oil
filter adapter from someone on this list. I am about to mount it and I'll
be damned if I can figure out how this is the same configuration. all 5 holes
on the adapter are common to one another inside, whereas on the original
bracket the oil has to pass thru the oil filter membrane in order to reach the
other outlet. it seems to me that with this adapter the oil can easily
bypass any filter. what point am I missing? which holes go to the
remote filter? which way does the oil pass thru this bracket? is
all the oil filtered all the time? if not, what are the two circuits?
Kevin
Lane Portland,
OR
e-mail-> n3773@comcast.net
web-> http://home.comcast.net/~n3773
Gee; Kevin, thanks a lot. How
could you forget where such a beautiful piece of work came from?
It is not an oil filter adapter, it is a
filter bypass block; which means that it replaces the filter attachment block
on the engine so you came put an adapter and larger filter somewhere
upstream. It is good to put the filter upstream from the cooler to reduce
possible sludge buildup in the cooler (assuming we should be so lucky to fly
our planes long enough for this to happen). I got a remote dual filter
mount from Racing Beat, but Earl’s sells the same thing. It comes
in either dual or single filter.
The bypass block mounts onto the engine
in the same manner that the filter block does. Use the two o-rings in the
counterbores on the block. Two ports go down into the engine; one goes to
the oil gallery, the other to the oil pressure control valve bypass and back to
the pan. In the original filter block only the oil going through the
filter goes to the gallery, while some bypasses the filter and goes through the
pressure control bypass. In the bypass block those two ports are common,
as they should be. The large port at the front with the fitting is for
the incoming oil, the 1/8 NPT ports at the opposite end and at the top are for
redrive supply or oil temp or pressure senders.
In the attached photo you’ll see
the oil line coming from the engine to the filter mount on the firewall, from
there to the cooler, from the cooler the bypass block on the engine.
(This happens to be a pusher configuration.)
Have fun,
Al