Mike,
We have not seen similar problems on 914 installations, which are
different from the 912S. The key to look for are the spark plug wire
marker bands. On ours, the ones on the lower plugs quickly shriveled up
to a very thin, dark brown band that could no longer be read. If yours
are still yellow and readable, you do not have the kind of cooling issue
we had.
Having said that all installations are not the same, I still believe our
measurements gave a very strong indication that the gills are
counterproductive to engine cooling in flight.
Regards,
Terry Seaver
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Mike Parkin
Sent: Wednesday, April 01, 2009 11:08 PM
Subject: RE: Europa-List: 914 Waste gate servo mounting position
question
Bob and Terry,
I must say that I find the subject of Europa cooling most baffling
(pardon the pun). G-JULZ is constructed absolutely 'bog standard'
apart from the addition of the Singleton firewall. My 914 engine
pre-dates the later ducting and stuff that is fitted around the
cylinders. You may recall that I had the cooling issues in Switzerland
some years back which prompted me to lower the oil cooler from behind
the radiator. Since then my problem has been getting the engine up to
temperature to take-off - particularly in winter. It is true that the
Evans coolant had an adverse effect such that in a sustained climb
during the summer the engine temperature climbed quickly such that I had
to level off early to control the temperatures. I think that the heat
transfer properties of the Evans being less than that of water/glycol
was enough to push the cooling system beyond its capability on a hot
day. I am just completing the modification paperwork for my cowl flap
which may or may not have any effect - certainly these days - trying to
keep the engine temperatures up particularly in the cruise is the main
problem. CHT and Oil temperatures circa 60-70 degs C are not unusual
once established in the cruise. It is curious that some people have
major cooling issues and other people don't. Perhaps I am missing
something. I have just fitted a water temperature gauge which might
help identify any problems. In light of Terry's experience, I will be
watching the whole thing much more carefully.
Regards,
Mike
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