Compression is 95-100 all cylinders can't get it to stay running though i rebuilt carbs and fuel pump,has original controls ,took cap off water pump and impeller to use on the 40hp i bought to replace,everything is there except impeller and cap. Maybe someone can get it to stay running but i can't. $275 obo. Talked to a few marine guys and they said this is well worth it,I don't know?