I could put it on the old engine and it’ll be quiet.
This engine is a little “tickey” on the one side. I can hear that now that it’s not whistling. It sounds like valves. Is that how they sound? My magnum doesn’t sound like that, it just growls. I changed the oil and it was rather thin looking and had a metallic sheen in the bowl. That concerns me a little. But no smoke from the engine, there’s a little positive pressure from the vent (rubber glove) but it takes a while to fill the glove. There’s no oil in the air breather. So hopefully it’s ok. I’ll run it and see what happens. I probably can’t damage it any worse than the last engine.