Re: Do I have the right pump?

[Don]

Well, that paint appears original, and the color tells me the engine is an 1969 or 1970 Evinrude. 71 and 72 models had a deeper darker blue color. It is not real uncommon for the engines to pick up a few scratches/scores throughout the years, you don’t see any aluminum on the cylinder walls do you? I can’t really see the walls very well in your pictures… Why is it that you pulled the cylinder head anyway?
Now that you have pulled the head, I would use some fine emery and scuff up those cylinder walls to take the glaze off. I know, seems pretty darn crude, but we are not dealing with a nascar race engine here. The engine looks to be a fresh water engine, no signs of salt/corrosion in there!
Clean up the mating surfaces, replace the head gasket and you may as well do the thermostat while you are at it…
I thought you said the midsection was white???
I remember you saying you paid $60 for this engine, I’m trying to keep you from getting in too deep on this project. Find the correct impeller housing and SS impeller plate, replace the impeller, use the original screws (don’t drill the holes out needlessly), and replace the impeller housing spacer/orings. I know the three screw set up seems flimsy, but it was been working successfully on these engines for many years! That being said, take some time to make sure the SS plate is mating properly to the housing, then use the typeM/347 sealer to ensure it is sealed properly. Don’t put any sealer between the impeller housing as SS plate, that will end up getting shmeared around on the impeller and SS plate.
I think we have "over analyzed" this project, let’s put it together and see how she runs!