Here is what I am wanting to clean up. I realize this doesn’t have any affect on the cooling ability of the motor but I would like to clean it up while I am in there instead of leaving it. These are the tops of the heads and the insides of the two water jackets. There is just surface rust on everything from it not being in use for who knows how long. Unless anyone has a better suggestion I think I will be going with nali’s suggestion of the Evaporust because I can just submerge the heads in it with old spark plugs in it and there shouldn’t ever be any get into the crank case that way. I can also just toss the water jackets in a container of that stuff for a while and it should take care of it.
