Agree with Kevin about using copper for cooling and corrosion issues that can occur. On my diesel the only copper was in the heat exchanger and that had to be protected by a sacrificial zinc. Perhaps some type of ducted fan might be easier to set up to remove the heat.
Mike
http://biankablog.blogspot.com
Salt or fresh? No matter I would be concerned about raw water cooling. I have
seen condensers on steam powered boats that were no more than a pipe in the
water run along the hull.
All in all if the vent is built with keeping splash out of the cover you will
likely not have any problem with splash on the motor. When you took apart the
outboard was the motor water spotted? Your controller is more susceptible to
water damage than is the motor.
If you use copper for a coil then make sure you electrically isolate it from
the outboard casing as galvanic corrosion will eat things up quickly.
Kevin Pemberton
On Wednesday, September 17, 2014 08:01:02 AM you wrote:
> On my 20' sailboat, since I don't already have a shaft, have decided to do
> an outboard conversion. With the outboard occasionally subject to splash
> I,m concerned about venting the motor cover for cooling. The outboard
> lower end already has a water pump. Would wrapping some copper tubing for
> cooling around the motor case, maybe held on with epoxy, add enough to the
> cooling to be worthwhile?
>
> thanks,
> John
Posted by: "Capt. Mike" <biankablog@verizon.net>
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