Re: 1963 Merc 60 6hp twin cyl. Running hot and dies
A set in the impeller would mean that it had gotten old and stiff, and the vanes don't flex. A new one should not do this.<br /><br />Tell us more--does it get hot only when idling? Or only when running wide open? In other words, does it just get hot when there is no water coming from the tell tale?<br /><br />You may need to check for restrictions in the water pathways. Try dropping the lower unit again, and blowing compressed air or a stream of water back through the pee hole.<br /><br />Were there missing pieces on the old impeller? These can lodge in the water passages.<br /><br />Is the water intake unobstructed?<br /><br />Good luck!