Originally Posted by TopperHarley
Today I checked the zinc on the heat exchanger for the first time on my new (to me) Catalina 30
Universal M25XPB. The engine
is about 3 years old, done 200hrs.
Im unsure of the previous owners standard of maintenance
, hence wanting to check the zinc ASAP.
My previous boat was raw water
cooled so im not that familiar with HX's.
The entire zinc was gone and the picture looked something like this:
My question... how bad is this ? (I have no overheating
If you are unsure of the standard of maintenance
that the boat was maintained to then a thorough flushing
of both sides of the cooling
system should be performed. Based on the photo
posted at the very least I would have the heat exchanger cleaned professionally (mine, I would replace). removal
will also allow inspection
and replacement of hose clamps, hoses etc. which may be poor.
I have found that the worst thing for cooling
systems, especially the raw water
side, is to not run. best to drain and flush whenever long idle periods are expected. 200 hours in 3 years is not a lot. Is this a new install in the boat or is the boat only 3 years old.
will never overheat until you need it the most.