These pistons are in nice condition. They take 2ea compression rings and +.007 to +.008 clearance. I'd like to try them sometime. The tallest domes I've ever seen on an Ironhead piston ! I guess you must fly-cut clearance for the big intake valves? Someone knurled these for oil . . .
I'll have to measure one and see if they're 3.040? or 3.035ish? Did he figure the clearance into the piston?
How did Dytch do it? Doc Dytch that is . . .
I've got quite the exotic piston collection for early ironheads. Anything I see at the swap meets for 3.00" bore I usually buy it, or regret it later. I sit and dig through my collection and just look at them. Probably never use them - they're just different attempts at performance. I need a set of those Aries pistons(I think) that have the 3 teflon lookin' buttons built into the skirts. Don't have those yet. The MC pistons, Dytch, Axtell, S&S short stroker pistons . . . Some people collect spoons from different states - I collect pistons.