![mechanical engineering - Why scuffed liners or piston rings always have vertical lines? - Engineering Stack Exchange mechanical engineering - Why scuffed liners or piston rings always have vertical lines? - Engineering Stack Exchange](https://i.stack.imgur.com/jdCe7.jpg)
mechanical engineering - Why scuffed liners or piston rings always have vertical lines? - Engineering Stack Exchange
![Effects of Piston Scuffing Fault on the Performance and Vibro-Acoustic Characteristics of a Diesel Engine: An Experimental Study | SpringerLink Effects of Piston Scuffing Fault on the Performance and Vibro-Acoustic Characteristics of a Diesel Engine: An Experimental Study | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs10921-021-00811-8/MediaObjects/10921_2021_811_Fig7_HTML.png)
Effects of Piston Scuffing Fault on the Performance and Vibro-Acoustic Characteristics of a Diesel Engine: An Experimental Study | SpringerLink
![Dropped a piston onto concrete - dented the crown and scuffed it up a bit. Is it still okay to run? : r/EngineBuilding Dropped a piston onto concrete - dented the crown and scuffed it up a bit. Is it still okay to run? : r/EngineBuilding](https://i.redd.it/uy07wd1snme51.jpg)