I recently purchased an engine which I suspect was being prepped for becoming a turbo engine. I'm doing a rebuild on the engine (it has an oiling issue) and I want to make sure I know which pistons the person put in it when they did the rebuild. How do I tell a turbo piston from a N/A piston? What are the differences in pin height?

Thanks!

 

Turbo pistons are dished to lower compression

 

Interesting. I've got two pistons which I took out of what I believe to be a NA and a turbo engine. The NA pistons have been recessed for valve clearance, and the turbo pistons are completely flat. No dishing or anything. Just flat. Any idea what pistons we have then? I believe they have Nissan markings.