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I bought it back in 1979 and used it during an engine rebuild but I just don't remember what it is, and there is no markings with brand, part number, etc.
it is used to clean the carbon out of the ring groves in the piston
That doesn't make sense- I bought when I rebuilt my 302 and went with new pistons, so I wouldn't need it.
It doe look a lot like some medieval gynecological instrument! I was 17 when I bought it (1979), so I was crazed over women. It's a perverse possibility.
You guys are right I just googled the scraper and there it was. I must have been given it by someone and just threw it in my toolbox because I was running new TRW 10:5:1 compression pistons.
How did you know? you guys have them too?
Great job, but lets get back to the gynecological theory since it is a hell of a lot more interesting