Break In Piston smoothing

[Hell on Wheels]

Anyone notice the ridges on the tops and sides of pistons? Do they serve any functional purpose? On the top, it just grabs on carbon but on the sides is it meant to reduce friction (less surface area)or does it damage the chrome plating more (abrasive)?

I got my hands on a really clean cylinder (needs some port work but pretty clean) and I want to know what steps I can take to make this engine last as long as possible.

 

[darwin]

You have some pics? Pistons on the sides should be machined smooth, top edge shouldn't have an edge to it unless some sort of new design for a purpose.

 

[FurryOnTheInside]

This is referring to machining marks left by the lathe that finishes the shape of the dome and side?
I'm sure some people have polished their piston. I didn't.

 

[Hell on Wheels]

This is referring to machining marks left by the lathe that finishes the shape of the dome and side?
I'm sure some people have polished their piston. I didn't.

Yah, that's what I mean. I'm planning on polishing the crown (detonation prevention with summer heat) but idk if I should do the sides too

 

[Spare_Parts]

Leave the side as is. Helps keep oil on the piston.

 

[Hell on Wheels]

For the record, you can see the machining marks on the side but the polished (DIY) crown. Hopefully this helps somehow.