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To convert to FWC varies with the engine- some ( such as my OMC I/O),
don't permit the exhaust manifolds to be fresh water cooled, only the
block- the newer manifold designs can be, but the exhaust elbows are
almost always Salt Water cooled.
Using a small block chevy such as mercruiser or OMC- you need a few
major peices:
Heat exchanger with Volume tank
Raw water pump
Varioyus mounting brackets
Hoses,clamps,fittings
Oil cooler (optional)
transmission oil cooler( not used on I/O)
In simple terms, FWC sets up your engine to be cooled just like
it's automotove relatives, except that a water/Salt water heat
exchanger instead of a water/air exchanger(aka radiator) is used.
The exhaust manifolds can also be cooled with Fresh watrer( depending
upon design), but this increases the load on the heat exchanger and
requires a larger heat exchanger.The crankcase oil can also be cooled
with either fresh or salt water.
The best sourcde of info is the manufacturers- Sen-Dure industries
has kits for just about any engine- I don't have the adress handy-
If you are interested, drop me a not at biznis::Cadmus
Most of the kits run $400-$600 and include all the parts except the oil
coolers. I declined to do my engine since the original engine lasted 15
years in salt ater and simply wore out. TYhe design of the manifolds on
my engine would not allow FWC of the exhaust manifolds, so I decided to
forget the manner- Sen Dure walso did not recommend adding FWC on an
engine that had been usedf for a couple of years.
Hope this helps
Dick
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| This has been covered under "Sailing" notes, . What it all boils down
into, is that adding the fwc before adding salt (water) will usually
double the life of the engine. Sendure is one of the most
knowledgeable fwc cooling manufacturers. They are located on Long
Island. With the cost of replacement engines so high, I would recommend
adding fwc on any inboard engine with at least a couple of years left
on it. In addition, I designed and built fwc's for my twin Chris
engines a few years ago. Sendure can tell you all you need to know,
but if you have any questions, add to this note.
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