Homemade piston pin press

[GRX]

Nice idea. Thanks for sharing. I do this sort of thing for a living. Don't think I'd press against new pistons, especially cast hypereutectic types which are more brittle.

Originally Posted by bnoon

To install floating pins, you heat the small end of the rod with LP or MAPP gas, then quickly push the pin through the rod and piston. You litterally have seconds to work with it before it cools too much that it can get stuck halfway on. Search youtube for videos on that part.

Wait .... heating the rod to install press fit wrist pins is standard procedure. Full floaters are just that. No press fit. They have a bushing in the rod for specific clearance so the pin can move freely. That's why they're floaters. A groove in the piston along with retaining clips keep the wrist pin in place.

[bnoon]

Originally Posted by GRX

Nice idea. Thanks for sharing. I do this sort of thing for a living. Don't think I'd press against new pistons, especially cast hypereutectic types which are more brittle.
Wait .... heating the rod to install press fit wrist pins is standard procedure. Full floaters are just that. No press fit. They have a bushing in the rod for specific clearance so the pin can move freely. That's why they're floaters. A groove in the piston along with retaining clips keep the wrist pin in place.

Oops, I had two ideas in my head... one for floating and one for pressed and then I typed the wrong one. I would never actually use this to press pistons on either becausr the heat method is so much easier.