Andy,
 
You're right about the annoying part.  We were in a rough patch of water coming back from the Delta when it overheated - just out in front of Pittsburg for those of you who know the area.  We were cruising at 2000 rpm at the time against 20 knot winds with an Ebb - big chop.  We were getting beat up pretty good when the alarm went off.  Tried dropping down to 1200 rpm but the wind just kept pushing us down.  Best I could do was 1600.  Made for a long trip home.
 
I really like the idea of adding an over-flow catch container for the coolant and will do that.  I will also change the zinc thanks for the suggestion.  Never thought to check the exhaust pipe so will do that as well.  Thanks for the insight.
 
Mike

[EMAIL PROTECTED] wrote:
Mike
I know how annoying the overheating thing can be.  The engine always starts overheating when you are a good distance from your home marina. 
 
Last year, I also was having over-heating problems. I had the heat-exchanger boiled out and a over-flow catch container installed for the antifreeze.  It seemed that the engine would heat up and the antifreeze would just boil out the overflow tube.  Now the antifreeze over flow is caught in the conatiner and recycled back into the engine, the same way your car system works.  I also had the heat sender switch changed.  If that goes bad, you never get a correct reading on the engine tempreture.
 
If you do boil out the heat exchanger, don't foreget to change the little zinc that is there.  Another thing to check is the engine exhaust pipe that comes from the engine and bends up then out the back.  I had mine changed to stainless steel a few years back (also installed a water muffler at the same time)  This exhaust pipe always clogs up.
As of now, my engine runs pretty consistant at about 180.  Good Luck with your problem
 
Andy
Slow"MO"tion
1985 Tall-Rig #6038
Nyack, NY    

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