Gapping Piston Rings - Datsun 240z

As part of the Datsun 240z Engine Build series we go through matching and gapping the piston rings to each cylinder bore. We detail the overall process including avoiding some of the common issues and pitfalls. We discuss piston ring orientation, measuring the gaps and then how to file the piston rings to meet the required specification.
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Music: Full Throttle by Music for Makers

[@MindDezign]

Back from the Future where does the 3.0 Datsun L stand as of today is it finished how does it run!!!

[@victorylanel3150]

Handy vid mate I'm in the middle of my L20B stroker now. Only I thought the top ring is usually gapped wider than 2nd due to the extra heat it sees at combustion?

[@KangaMotorsports]

I am no expert by any means but everything I have seen shows tighter top ring clearances to minimize blow-by. Of course you don't want it too tight that it breaks the ring land. Follow your recommend specifications from the manufacturer.