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Mercruiser 485 life expectantcy

iceknight

New member
"Hi there,
Just c


"Hi there,
Just curious on how many hours are likly to come out of 485 mercruiser? If maintained correctly,


Cheers,"
 
"The motor itself can last a g

"The motor itself can last a good or reasonable amount of time, 10 years or more.

Problems are the manifold issue, water leaking into exhuast and getting into engine.

Charging system should be scrapped and converted to one wire altunator.

Run a 20w 50w 25w-45w etc. high grade oil.

Make sure you are aslo running the largest heat exchanger possible. I believe it is 4 inch diameter.

scrapp the points ignition and convert to a electronic (pertronics) and its coil also.

Set timimg to 4 degrees BTDC from 6-8 BTDC to compensate for weak gasoline.

Other than that it is a crap shoot as this engine is a unique design with a aluminum block and cast iron heads.........."
 
I've got 825 hours on a 19

I've got 825 hours on a 1982 and still running strong. Of course that is stored in fresh water in a mild climate and the key is maintenance.
 
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