When we rebuilt my 261 in a 2 weekend "Shop Class" taught by Hotrod Lincoln, he made a rear main seal setter tool from a Ford piston. It works beautifully to set the seal.
261 Rear Main Seal ToolIf anyone would like to use it in their own project, let me know and I'll send it to you. Hopefully, I will never need to use it again

Anyway, it would be cool to get this tool moving among Stovebolters and see how many people we can get to use it.
Who wants to be 2nd?
John