SoCal Jet Boats
Tech Talk => Jet Pumps => Topic started by: jamminjetta on August 19, 2014, 11:07:40 AM
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Ok I rebuilt my pump a couple of weeks ago. Since about that time my engine has been getting hot. I put in a new A impeller and wear ring. Does the impeller need shimmed or could this be my water cooling issue?
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It seems shimming is to ensure proper gap between impeller and wear ring in order to maximize efficiency of pump. I haven't read about it creating an overheat condition. I'd continue to look for blockage in cooling lines. Engine and exhaust should have drain cocks. Also Check valve, if any, coming off pump to make sure nothing is in there blocking flow. Could also be something jammed in water feed port on pump....
Let us know what you find.
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Did you verify that you had no binding in the splines and at least 1/8" clearance between the yoke and snap ring so the drive line is not pushing the crankshaft against the crankshaft thrust bearing?
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Did you verify that you had no binding in the splines and at least 1/8" clearance between the yoke and snap ring so the drive line is not pushing the crankshaft against the crankshaft thrust bearing?
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no I didn't check none of that.
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