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I bought a SE106 lower unit last fall to replace the alpha I unit which met its demise when I hit a rock during last falls drought / low water conditions.
Also, the engine was rebuilt the previous spring (4.3L v6) and during that rebuild the engine water pump and thermostat were replaced and carb was rebuilt.
I installed your outdrive last fall but due to the low water conditions I never got the boat out after installing the new lower unit.
Now, this year I am having engine temp issues. As I throttle the engine up the engine temp gauge climbs to 210F at which point I throttle down to idle where the temp falls back down to around 140F. So either the engine is not getting enough cooling water or there is an obstruction in the cooling system.
My first thought was the exhaust headers were plugged so I pulled those off and cleaned them. Since this is an older boat there was a good bit of rust blockage in the headers but the riser water ports were not plugged. I did a thorough job of cleaning the headers and reinstalled them hoping I found the problem. Well no, The engine temp still rises to the point of over heating within about a half mile or so. Same situation. throttle up to get boat on plane, back off to 1/4 to 1/2 throttle, trim the bow up, and sit back and watch the temp gauge rise to 200+F then throttle back to idle and watch the temp gauge fall back to 140f??? The engine will idle cool for ever. I can put it in gear and idle along at 140F but once I give it any throttle the temp guage starts to climb.
I have a hard time believing that a new lower unit could have a bad water impeller but It's beginning to look that way, especially once you consider the fact that I didn't have any temp issues until I installed your SE106Lowere unit....
So my question are have you had any units shipped with faulty water pumps. And I don't look forward to the task of pulling the lower unit off to check the water pump. Is there a test I can perform to verify the pump functionality??
Thanks for your reply,
Brian
Also, the engine was rebuilt the previous spring (4.3L v6) and during that rebuild the engine water pump and thermostat were replaced and carb was rebuilt.
I installed your outdrive last fall but due to the low water conditions I never got the boat out after installing the new lower unit.
Now, this year I am having engine temp issues. As I throttle the engine up the engine temp gauge climbs to 210F at which point I throttle down to idle where the temp falls back down to around 140F. So either the engine is not getting enough cooling water or there is an obstruction in the cooling system.
My first thought was the exhaust headers were plugged so I pulled those off and cleaned them. Since this is an older boat there was a good bit of rust blockage in the headers but the riser water ports were not plugged. I did a thorough job of cleaning the headers and reinstalled them hoping I found the problem. Well no, The engine temp still rises to the point of over heating within about a half mile or so. Same situation. throttle up to get boat on plane, back off to 1/4 to 1/2 throttle, trim the bow up, and sit back and watch the temp gauge rise to 200+F then throttle back to idle and watch the temp gauge fall back to 140f??? The engine will idle cool for ever. I can put it in gear and idle along at 140F but once I give it any throttle the temp guage starts to climb.
I have a hard time believing that a new lower unit could have a bad water impeller but It's beginning to look that way, especially once you consider the fact that I didn't have any temp issues until I installed your SE106Lowere unit....
So my question are have you had any units shipped with faulty water pumps. And I don't look forward to the task of pulling the lower unit off to check the water pump. Is there a test I can perform to verify the pump functionality??
Thanks for your reply,
Brian
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