The set up is more difficult in a lathe Ray. Lacking a mill, I suppose you could mount a fixture up on the cross slide and use a boring head in the chuck, or mount a fixture up in the chuck and a boring tool up in the compound.
But as you guessed it's a simple setup in a Bridgeport. I bored and re-sleeved my rear wheel cylinders in my Bridgeport a couple of years ago to keep the same diameter bore in the cylinders. Here they are before the rebuild:
http://rides.webshots.com/photo/2213841560098611668BwvTtz and here they are after they were bored with the sleeves:
http://rides.webshots.com/photo/2623085370098611668ETUIML and here’s the simple fixture that I used in the Mill with the boring head:
http://rides.webshots.com/photo/2288635180098611668HkoLar You can pass out all the “this is what worked for me” advice you want guys, but as Chip pointed out, the piston clearance is just as important to proper cylinder performance as the cups are. The factory specs are .001” to .005” for the piston to cylinder clearance. That’s what I would recommend you shoot for unless your going to make new pistons and try to find oversize cups, which by the way I’ve never seen.
Denny Graham
Sandwich, IL
