Re: 1958 Lark 35

[flathead]

I swapped lower units because the original was leaking/cracks/welded. Only reason I mentioned it, was so you had some history of the motor. It’s new to me. No paint discoloration. I ran it for a while in the tank pre swap, pumped good water the whole time so I’m thinking it’s something I did, or something with the Johnson/Evinrude swap. The thermostat pieces are all in there, I’m getting water up to the stat housing. If I turn it over with the housing off it throws water out the top. But I don’t know if it still would once it got hot. It’s pumping good for about 10 minutes now, then slows, then stops. The tank is clean. Screen on the bottom of unit is clean. No broken housing screws. No holes in copper tubes. When I put the impeller plate in, I sealed it down.(Hopefully it’s done right) The one thing I question is the hole you mention by the housing towards the shaft. I think I cleaned all the holes I saw in there, however I don’t remember that. Is it easily seen? Have you ever seen one get hot in a tank, but be ok on the lake? It’s a freshwater motor. Sorry I was bouncing around, kept going back up to read so I could try and answer. Thanks again for the help. One more thing, I may have swapped or mixed the copper tubes from one to the other, don’t know for sure, they matched so I put them in.