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Great detective work there Achim!I'm impressed that you went back to fix up this project! Not that it isn't worth it, of course. It's a beautiful engine! But I generally can't work up the gumption to go back to a project once I've initially retired it, you know?Looking forward to seeing it run even better than before!Kim
That's a great running engine, Achim. Now I'm going to have to set aside time to go back and read the build thread! Maybe over a glass of our locally made Dunkel Weisse...
I'm glad your R&D dept. is still open sorting out these problems is a strange sort of fun
Achim,I did not know you were taking your Snow engine apart. One possible reason for coolant flow difficulty with this engine is the head gaskets. The area of the gasket between the two bolt circles that is directly exposed to liquid coolant will expand into the water jacket space displacing almost 50% of the head water jacket volume. I tried Teflon and different gasket materials. All expanded (bulged) into the water jacket space. I replaced the single piece head gaskets with two piece gaskets removing the center area normally exposed to coolant and covering only the mating areas of the two bolt circles. The only photo I have of the problem is below. I am referring to the center light color area of the gasket. In the photo is is actually a depression. In the past I have run into design issues of cooling systems and I have switched to positive displacement gear type pumps. They solve many issues, are smaller, and self priming.Jeff