Piston Pin Buttons?

[madmikeracing]

I also prefer the Teflon Glass filled Buttons, I have had some issues with cir clips in one engine, I always install them burr side out (smooth side against the wrist pin!) Actually had one come out pin nailed the liner, wasn't nice, I do drive the bejeezus out of my street bikes though, With buttons you dont have any worries assuming the rods are straight!!! Mike

[trippivot]

The engine building secret is this. the opening of the circlip HAS to be located at 12 o'clock or 6 o'clock PERIOD.

[ArttuH]

Every now and then I see/hear comments that the buttons may cause glazing of the bore walls in long term street use. I wonder if there is any truth behind this?

[rapidray]

Every now and then I see/hear comments that the buttons may cause glazing of the bore walls in long term street use. I wonder if there is any truth behind this?

Not with Teflon buttons. I've seen issues with aluminum buttons if the pin got stuck to one side & wouldn't move.
Ray.