Two weeks ago today on Sunday I hooked up my plow to my 8N worker to get it ready to plow up my garden.Got the plow hooked up then noticed a welch plug in front of the oil filter was leaking antifreeze.So I drove it to the shop and drained the block,removed the rusted through welch plug.Thinking I had an extra around in the tool boxes or some place from a rebuild.I Cant find the plug no place.I knew auto zone or Orileys would not have one,and NAPA was not open 1 3/16",NAPA # 219-1021 .Went in the house to look for it in a drawer,nope but spied a Kennedy half dollar hum took it out to the shop and checked it with the dial callipers,Just a hair over 1 3/16",outer edge smooth (no notches).Layed it on a big socket and concaved it with a ball pien and a hammer.Wiped out the hole and applied a little permatex put it in place with Johns face lookin at me and put the ball pien right on his nose and hit it with a hammer.Fixed and that copper 50 cent should out last the tractor and me ,wont rust any more.If I remember correctly Dorman welch plugs cost .49 cents.The next rebuild will have 1.50 in it to!