Interesting, Mike.
Mine is a Europa Classic with the 80hp 912. It does have the very small coo
ling intakes.
Since the oil cooler sits behind the port radiator, I was concerned that th
e extra =91blanking=92 created by the larger cooler might prove to be a pro
blem with the water cooling but that doesn=92t appear to have happened. Bef
ore changing the oil cooler, I did try carefully straightening out all the
bent and damaged fins on the radiator and cleaning out the bugs in the hope
that that might have helped improve the airflow through the radiator and o
n into the oil cooler. Disappointingly it didn=92t seem to help at all, and
my initial impression was that my radiator cleaning attempts may have made
matters worse! Because of that, I did start down the road of looking at re
placing the port radiator or getting it re-cored to improve airflow ' but
I found both options would have been very expensive. I was very glad that
none of that seemed to be necessary when the bigger oil cooler fixed the oi
l temp problem straight away and without seeming to create any noticeable r
ise in the water temps (which had never been a problem anyway).
It seems to me that my =91winter maintenance=92 addition of the fire-sleeve
to the oil lines was really the only change I had made from last year=92s
configuration that might have contributed to the oil temp problem seen this
year, so removing the sleeves was to have been my next course of action. H
owever, now that the oil temps have come down so much more than expected, I
=92m planning to leave the sleeves in place so will probably never know wha
t they did or didn=92t do to the oil temps!
I wonder if you really need any kind of oil cooler on the back of your radi
ator now that you have an oil cooler in its own, much better chin location?
Could you try removing the 8-row one entirely from the radiator and seeing
if you=92d still have OK oil temps just using your large chin cooler?
The other wisdom I have picked up from many other useful contributors to th
is whole issue is the importance of air exit area, as well as to ensuring t
hat all incoming air goes through the radiators and not round their edges.
When we were in the midst of our major oil overheating problems, and away f
rom base on a very hot day, we managed to get by through packing washers un
der the bottom edge of the lower cowl to increase air exit area, as well as
using foil tape to seal the edges of the radiators to the cowl. That made
just enough of a difference to keep us going and get us home!
If you need a 10-row oil cooler to play with then let me know, as mine is n
ow redundant!
David
G-BWJH
From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr
onics.com> on behalf of Mike <mike@nyumba.co.uk>
Date: Wednesday, 8 November 2023 at 16:21
Subject: RE: Europa-List: Re: Cooling impact of using firesleeve on oil lin
es
Hello David
I haven't been following this but looking at what you have done I am please
d
that it worked for you. I am unsure what engine you have but when I changed
mine from 80HP to 100 HP as I half expected I immediately encountered oil
cooling problems so fitted a chin inlet and located a larger oil cooler
there removing the one behind the port radiator. This helped but did not
solve the problem. At this point I fitted the 16 row as you have (in
addition to the chin radiator), this solved the oil issue but promptly gave
me water temp problems!
I have now changed the 16 row for an 8 row which has still cured the oil
issue and although the water temp issue is better it is not entirely cured.
I am now considering whether a re- core of the water radiators might help.
Just as a matter of interest I have not fitted firesleeve to any of my oil
lines thinking that this would result in the maximum radiated heat.
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Davidcripps
Sent: 08 November 2023 15:26
Subject: Europa-List: Re: Cooling impact of using firesleeve on oil lines
Here are a couple of photos of the new 16-row Mocal oil cooler installed on
the back of the port radiator. Works a treat! PS. Glass wrap around exhaust
has now been removed. It was only there as a 'back-up' as new oil cooler is
much closer to the exhaust stub than before, but this hasn't seemed to caus
e
any problems with the oil cooling.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=511952#511952
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