Well those sure aren't the same as the comps. The pin/rivet that holds the link on is a lot larger in dia, there are round plates on both sides of the bar rather than just one, and the cup is held in place with a snap ring/circlip rather than a spiral lock. Has a full body as well. I'd like to take one apart and compare it to the comp's guts.
I noticed, when I drilled the rivet off the lifter and took it apart, the plate [metering plate? metering disc?] under the cup does not have any holes in it. My memory is not as it used to be but I thought the plate had holes to allow a metered amount of oil to bleed up through the cup, pushrod and to the rockers. Back in the 60s and 70s we used to put washers between the disc and the cup body, I remember holes in the metering disc. I haven't taken a modern after market lifter apart. Perhaps the cup body doesn't sit down on the disc but rests on the top of the plunger body allowing the disc to move up off the recces in the plunger, letting oil pass around the outside of the disc and up through the cup?
