Am I right in assuming the one with reverse torsional twist is the scraper (second groove) and the plain ones are the first groove? Dimple towards top of piston?
the top and second rings are different i think, mine one had a chamfer that had to go a certain way. do they have dimples on them, if they do they go up allways i think.
Top ring has dimple on top but otherwise is the rectangular section ring the second usually either hastings is a tapered scraper which goes sharp edge down. If they have marks then they go up.
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