Floating Pins how to?

"Pressed pin" refers to the pin and small end of the rod. It has nothing to do with the piston to pin interaction. That's why you have pistons that can go either way. With full floating, the pin can float in the small end, in a bronze bushing. And the lateral (sideways) movement is stopped by clips that go in the grooves you see machined in the ends of the pistons' pin bores. With pressed pins, the small end of the rod has no bushing, and it gets heated in a rod heater to expand the pin bore. While it's hot, and the pin is room temp, the rod is pulled from the heater, slipped in the piston, and the pin is slipped thru the piston and rod. In a matter of a second, the pin cools the rod, and it shrinks to normal size, locking the pin in place. A seasoned guy makes it look like nothing. I've never done it successfully..lol. They never end up centered the way they should be. I pay the shop to do it. But that means the pin is retained by the press fit, so there will be no clips used in the groove in the pin bores, or no grooves present at all.