Hey Don,
I had an issue last summer with my Volvo 270 overheating at plane.
You pointed me in the right direction...checking the elbow where the tube leaves the outdrive and heads into the engine cavity.
It turned out to be the tube a little below that fitting, sucking air when the back end came out of the water on plane.
Some fine pump packing and a plastic tie-wrap fixed the problem.
Just wanted to say thanks!
I had an issue last summer with my Volvo 270 overheating at plane.
You pointed me in the right direction...checking the elbow where the tube leaves the outdrive and heads into the engine cavity.
It turned out to be the tube a little below that fitting, sucking air when the back end came out of the water on plane.
Some fine pump packing and a plastic tie-wrap fixed the problem.
Just wanted to say thanks!