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I'm rebuilding the 6-cylinder flathead out of my 1953 M37. I have a question about the piston pins. The rod ends bushings were burnished to fit the pin and they are a good fit. I'm having to use a hydraulic press to push the pins into the pistons. I've never had piston pins that are this tight before. I assumed they would be a thumb pressure push fit. Which is right?

Thanks

My book is buried atm so I can't look it up. But the fit specs are in it.

I've only seen pins installed by thumb pressing when the rod's end gets really hot with the torch. Otherwise it's the usual gentle hammering.

I cleaned them up with a green pad and tapped them in with a rubber hammer. They were originally packed in cosmoline. I had to soak them for a day in gasoline to unravel all the packing. I still had to press them out of the piston with a press. Must have been some cosmoline around the pin. I think this is the last time I use NOS pistons and rings. I'll buy new stuff next time.

Thanks for the help.

Carb cleaner takes off Cosmoline easily-no need to soak, especially in gasoline! Be careful Friend!
Gary