Mike, a few years back I tried "O" rings in place of packing on my aster 8550 mogul. They worked great when new, but after sitting for a few weeks they leaked. I would put a new set in and it ran great the rest of the weekend. So I am back to packing. After building the Mike I am thinking about making new pistons and using a set of piston rings. The mogul has twin 13mm cyls.( it was originally a single cyl. version) same as the Mike. ----- Original Message ----- From: "Mike Chaney" <[EMAIL PROTECTED]> To: "Multiple recipients of sslivesteam" <[EMAIL PROTECTED]> Sent: Wednesday, March 12, 2003 3:53 AM Subject: Re: Back to O rings
> Bob asked:- > > > << There is no reason for the piston to touch the cylinder wall >> > > > OK Mike, I realize that it need not, but how come there are countless books > > written with chapters on the process of good running fits on pistons? > > Probably because they weren't written by me. I believe a close fit is necessary > if you're using cast iron piston rings or cotton packing, but I have no > experience of these. The method I use is commonly used by proponents of O > rings, however. > > It works! > > Mike > >
