300ZX (Z31) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

Turbo vs. NA Pistons

Old 12-17-2015, 08:26 PM
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Turbo vs. NA Pistons

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!
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Old 01-16-2016, 12:27 PM
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Turbo pistons are dished to lower compression
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Old 01-18-2016, 06:32 AM
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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.
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