You're probably about due for an exhaust riser. Fresh water cooling is not
as great as some claim. If you include your exhaust manifold you will
extend it's life but you have to have a pretty good sized heat exchanger to
do that. You will always have salt water in the riser no matter what
cooling system you use. And your engine block will be worn out long before
salt water does anything to it. It can be a diy job.

"gjoyce" wrote in message
m...
Is there any point in converting a five-year old 135hp 3.L MerCruiser
w/Alpha drive from sal****er to freshwater cooled?

I'm happy with the way it is, but was reading an I/O-OB thread and one
guy wrote something about freshwater being the only way to go, and it
got me thinking ...

a) is it possible?
b) is it cost possible?
c) is it a do-it-yourselfer? (I'm handy enuf)

Figure you guys have opinions on this

Gary