Kirkland, WA.
All the history I know - I bought it from a donor. I had this engine installed to my LX 450, it was running as expected except it was smoking out of the exhaust. Then I've built a new engine and replaced this engine with the one I've built. Even with the new engine the rig was smoking for ~ 1 hour after I first started it, then the smoking completely gone. So to me it looks like I made a stupid mistake by not giving the donor some more time to run longer than I did. I have no idea was the cause for the smoking - some amount of the oil that was dumped into exhaust by the engine the rig came with? I have this story in one of my post at the forum.