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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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09-23-2018, 01:54 PM | #1 |
Zilvia Member
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Piston Ring Clarification
The FSM states for piston rings to place the "punchmark side up" unless a punchmark is not present, then they can go in either side up.
I have a set of OEM Style ITM rings, that do not have punch marks, but they have Letters Stamped on them. I cannot find any instructions or documentation for ITM rings, so I wanted to ask here. Is it safe to assume to place these rings stamped side up? One ring looks to be a torsional type (small chamfer on inside upper edge) the 2nd ring looks square upon inspection, with no chamfer EDIT: This mahle youtube video says with basically all brands, any punch or mark would indicate the top side. But just wanted to check here as well https://www.youtube.com/watch?v=QloJ3kjsAyY
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