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Better
To Replace Than Be Sorry (18-6)
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 I
have a manifold concern. My boat is powered by a 1974
MerCruiser 165 hp with an Alpha One drive. My manifold
is leaking. I've had it welded and it still leaks. The
replacement cost is around $1,300. This is really not
a considerable option for me. I have thought about removing
the marine mani-fold and replacing it with a standard
250 hp Chevrolet automotive intake and exhaust. Of course,
I would route the exhaust out the back of the boat above
the water.
D. Dan (e-mail)
(Answer) ...
CHECK THE HOSE
We own a 1988 Doral Citation and have a problem with
a water leak in the aft-cabin (starboard side, rear
corner). A puddle accumulates every time we fill our
fresh water tank. We were wondering if you've ever heard
of this problem before from any other Citation owner.
We would also appreciate any suggestions you could give
us of how to fix this.
J. McLees (e-mail)
(Answer) ...
TO COOL OR NOT TO COOL
I am currently in the market for a 19-21-foot bowrider
with a V-8 power train. I will running it on fresh water
lakes in Alberta and on the Atlantic Ocean off Newfoundland,
where my family resides.
My family tells me that a runabout used in salt water
without freshwater- cooling will result in premature
wear of the engine cooling components. I have contacted
many manufactures about my concern and I can't get a
straight answer. Many of them offer these systems as
an option or as an aftermarket kit, but they won't say
whether it's a must or not. Do I need fresh-water cooling
or not?
P. Humphries (e-mail)
(Answer) ...
A NICE CHANGE
I own a 31-foot, Formula-style boat with twin 454 engines
and for many years, I conducted my own oil changes in
the fall. My mechanic insists on leaving the old oil
in the engines over the winter. He suggests I drive
the boat for 10-15 hours in the spring, then do the
oil change at that time. His explanation is that the
oil goes bad over the winter. Is this right?
Name withheld (e-mail)
(Answer) ...
POWER OF CHOICE
I have a beautiful 1988 Bayliner 2455 with an original
5.0L OMC/Cobra (GM) engine. The engine is still running,
but is starting to show some signs of aging. I would
like to purchase a rebuilt engine at a decent price.
Also, can I change the block for a 5.7L engine? I don't
remember being able to run the engine over 4,000 rpm.
Apparently, with all the stuff I have added, the boat
is now too heavy. With six adults onboard, I can't bring
the boat on plane.
R. Lauzon (e-mail)
(Answer) ...
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