pishta
I know I'm right....
remove check ball at bottom of piston and put in a spacer to make it non compressible. I thought he was actually referring to hyro rollers which can be reused and are more expensive that flat tappet hydros. Not much sense to do a inexpensive hydro flat tappet into a solid unless its a Shubeck or some other $$$ lifter you want to retrofit and reface for a solid cam.