crayZlair Posted June 1 Share #37 Posted June 1 I worked for a Chrysler plant that made torque converters. The hub (the part that goes into the transmission) was ground to size, and then "polished" to make the ideal surface for seal wear. The funny thing is that the "polishing" actually produced a rougher finish than the grinding. 1 Link to comment Share on other sites More sharing options...
Captain Obvious Posted June 2 Share #38 Posted June 2 Haha! Maybe they wanted some scratches in there to hold oil like piston ring cross hatch marks? Seals like a little lube, 2 1 Link to comment Share on other sites More sharing options...
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