1999 Nb miata, Think my piston rings are going, do I rebuild or swap a new motor? No experience with either but I want it to be back running healthy! : r/Miata
Replacement rings for FM-Wiseco pistons. – Flyin' Miata
2004 Mazda Miata 1.8L Piston Ring Set PR490.E20
Replacement rings for FM-Wiseco pistons. – Flyin' Miata
How to test a Piston Rings on a Mazda Miata MX-5 Engine, or any other engine. - YouTube