How about routing the FRESH water through the existing oil cooler rather
than raw sea water? The heat exchanger should bring the temperature down
enough to protect you and you eliminate the corrosion risk.

--
Dennis Gibbons
dkgibbons at optonline dot net
"Pascal Goncalves" wrote in message
om...
I have a Volvo Penta 2003T engine in my 1992's 36 ft sailboat; this a
turbocharged version of the 2003 and it have an Oil Cooler instaled
inline, before the fresh Water cooler. The oil cooler is made of
aluminium with the inner tubes of cooper, and because it uses raw
water, is prone to corrosion. A new one, woul cost to me, here in
Brazil, about US$ 1,200.00 wich I think is unaceptable.

This engine is 45 HP, and has a turbocharge (turbine) but the
operating temperature is not so high; the thermostat begins open at
74 °C and is fully open at 87 ºC; the new Volvo Penta 2040 wich is
not turbocharged and has 40 HP, operate at a higher temperature
(82-95°C) but does not have an oil cooler. Both engines uses the same
lub oil (15W40).

The oil cooler, is a very critical piece, since it can cause the
complete desctruction of the engine, in case of the raw water goes to
the engine lub oil. I am tempted to eliminate this oil cooler
bypassing it and not refrigerating the lub oil at all. What would be
the drawback? I use this motor very lightly, at 2,000 rpm, not at
the maximum 3,200 rpm.

Thanks for the help

Pascal Goncalves
Salvador-BA-Brazil

"Dennis Gibbons" wrote in message et...
How about routing the FRESH water through the existing oil cooler rather
than raw sea water? The heat exchanger should bring the temperature down
enough to protect you and you eliminate the corrosion risk.

--

I wish to tank you all, for the good advises; In summary, I agree
that:

1) The elimination of the oil cooler is not a good idea
2) The more frequent change in oil lub would benefit the turbine
anyway
3) The best solution is to procure someone wich can make a similar
oil cooler but at amore razonable cost, say about US200.00
4) This new custom made oil cooler should have best materials and/or
sacrificial zinc anodes
5) If possible,the new assemble should have an option, so that the oil
cooler could be bypassed in an emergency situation.
6) The idea of using fresh water instead raw water in the oil cooler
could be anayzed as well

Best regards

Pascal Goncalves
s/v Navstar
Salvador-Bahia-Brazil

"Dennis Gibbons" wrote in message et...
How about routing the FRESH water through the existing oil cooler rather
than raw sea water? The heat exchanger should bring the temperature down
enough to protect you and you eliminate the corrosion risk.

--

I wish to tank you all, for the good advises; In summary, I agree
that:

1) The elimination of the oil cooler is not a good idea
2) The more frequent change in oil lub would benefit the turbine
anyway
3) The best solution is to procure someone wich can make a similar
oil cooler but at amore razonable cost, say about US200.00
4) This new custom made oil cooler should have best materials and/or
sacrificial zinc anodes
5) If possible,the new assemble should have an option, so that the oil
cooler could be bypassed in an emergency situation.
6) The idea of using fresh water instead raw water in the oil cooler
could be anayzed as well

Best regards

Pascal Goncalves
s/v Navstar
Salvador-Bahia-Brazil