Posted for randy snarr
<randylsnarr@yahoo.com>:
Scott,
Great info, Thanks!
I am in the middle of reworking my duct to the
cooler. This one will be much
smoother and have a better transition without scat tube and the associated
bumps. After reading your attached
info, that may not be my problem.
I have never purged my oil cooler for air and mine is low on the firewall. In
your attached
documentation, it talks about low mounted oil coolers and how
they are prone to having air in them. How do you purge the air out?
My oil
cooler is on its side with a hose fitting on top and bottom. My
plumbing comes out of the top of the engine(near the vernatherm) to the top
fitting on the cooler and from the bottom of the cooler to the fitting in the
middle of the accessory case.
It is my understanding
that the hot oil out comes from the top of the engine
near the vernatherm. Should that go to the bottom of the cooler or does it
matter?
I would think if the hot oil in went to the bottom of the cooler it would
force the air up and out in the return line to the
lower fitting on the
engine.
You have several good ideas that I am going to try in addition to the duct
changes.
I plan to
test after each mod to see what make the difference.
Thanks again,
I will post what I find..
Randy L.
Snarr
N694RS
--- On Thu, 3/12/09, Sky2high@aol.com <Sky2high@aol.com> wrote:
From: Sky2high@aol.com
<Sky2high@aol.com>
Subject: [LML] Re: oil cooling/Vernatherm
To: lml@lancaironline.net
Date: Thursday, March 12,
2009, 5:30 PM
Randy,
Oh, I forgot. I also replaced the
Vernatherm, but I don't remember
technical details of the testing (a long story involving a flash fire - best
told in a
bar). I believe the chamber that the Vernatherm operates in
is such that, when cold, allows oil to bypass being sent to the
cooler.
When hot, the extension of the device shuts the bypass opening. Thus, if
the Vernatherm does not fully extend
when hot, the bypass is not sealed and
uncooled oil would be returned to the system.
Here is one example of test
results:
http://www.vansairforce.com/community/showthread.php?t=32763
Here is some interesting info, click on tech
data:
http://www.rostravernatherm.com/oil-valves.htm
Here is a more interesting read:
http://www.sacskyranch.com/eng18.htm
Scott.
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