Help! From Belize, Central America

[albinovargas]

My sons and I, with the help of a friend recently finished de-carbing a 1979 Chrysler Skier 700 and the engine runs great however the engine starts overheating at moderate to high speeds. It might be that the anticavitation fins above the prop might be wrongly installed. I know this sounds foolish but can s/on help here? What direction should the fins be installed? Angle towards the boat or outwards towards water? Any assistance will be greatly appreciated.

 

[eurolarva]

Re: Help! From Belize, Central America

Even with a two piece gear housing I dont think you can put it together backwards. See below. More then likely the impeller is shot, the water pump is pitted, the water tube is not connected correctly to the grommet going to the power head or the water pump seal to the water tube is shot. Good luck

 

[Frank Acampora]

Re: Help! From Belize, Central America

Agree with above. An engine that overheats at high speed and cools back down at low speed is almost always a sign of the water pump impeller starting to go bad. Replace it and see what happens. And by the way---if the impeller has not been changed in a long while, The water pump may have a 12 fin impeller. Those are no longer made. Only a 6 fin impeller is made but surprisingly, it is a little more efficient than the 12. So do not worry and use the 6 fin impeller.

If you can not get an impeller down there locally (and Merc dealers will probably say the engine is too old) Or if you can not get one on line, then go over to The Chrysler Crew. Contact franzmarine.com. He will have what you need.