Recently bought a set of 12:1 85mm Wossners, and haven't seen many people use them, or post much about them.

Was wondering if anybody has experience using these, and if the rings that come with the pistons are sufficient?

 

What I see is SHARP edges on the pop up.
Sharp edges are usually bad to have in the combustion chamber.
I will avoid this brand because of your picture...

 

1- Wossner is a very repeatable high-end piston manufacturer
2- How do you think you increase compression ratio, you pinecone.

 

If you zoom into the picture you can see the dome has chamfered edges.

 

I mean sharp edges do take up more volume than rounded over edges, thereby increasing compression. But I would usually be concerned about sharp edges being causes of increased detonation. Increased compression and increased detonation seems like a bad idea...
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Yes, this will help me get to my destination at an increased rate.

 

No manufacturer makes a ready to run piston. Unless your seeking detonation and broken ring lands. They all have to be massaged. Some are better then others just by design but they all need blending and deburring.

 

You're**

I have an extremely competent machinist handling the heavy lifting, and a CNC head being built with these pistons in mind. Thank you all for the irrelevant and useless input completely unrelated to the question at hand.