Anyone know for sure what this tool was designed to do ? My personal guess is piston ring groove cleaner but that is only a guess. Measures 2 1/8 between tips and is marked only (Truth). I did check Alloy
Quotepiston ring groove cleaner
I don't think so. The angle of the "cutters" is very steep and would damage the piston, looks like to me.
My first thought was it is a piston groove cleaner. Below is scan from a 1931 catalog showing one that is different than yours. If it is a piston groove cleaner it must be an older model.
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/truth-piston-groove-cleaner.jpg)
Quote from: Bus on June 24, 2011, 08:45:50 PM
My first thought was it is a piston groove cleaner. Below is scan from a 1931 catalog showing one that is different than yours. If it is a piston groove cleaner it must be an older model.
The over all design is almost identical to yours Jim, so I would have to go with an older version of the ring groove cleaning tool. If not, my backup WAG is a spanner wrench for an old cartridge type oil filter canister, or rear main seal groove cleaner on a crankshaft????????????
Wayne
Found this in a Plomb Tool Catalog No. 15-A (136). Looks like your tool is definitely a piston ring groove cleaner.
(http://i222.photobucket.com/albums/dd3/buswrench/message-board/plomb-groove-cleaner-catalog.jpg)
Thats it. Thanks Bus.