Hi Axus and welocme to the forum. I have owned 3 250N Superdreams in the past but have no idea how much the engine might weigh. The whole CB400N weighs 185.0 kg (407.9 pounds), so if the engine is about 1/3 of that say 60kg with carbs etc. Just an estimate. What are you planing to do with it? Build it into a special of some sort? I have dug out my old haynes manual for the 250/400N and it doesn’t appear to give an engine weight.
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