rings

[David Luciani]

Dave, I talked with Dave B. last evening. According to him, the ring thickness on the newer 820's is .031. Of course, the bore is 2.531. No chrome rings on the earlier chrome or later Nikasil bore, please. Just a good steel ring for easy ring seating. It'd be nice being able to get rings in the same material and thickness for the 610's at 2.1875 bore. The issue there is that the 610 has a steel liner, so oversize rings from +.005 to +.050 would be needed there. Also, accommodation would have to be made for the anti rotation pin on 820 or 610 pistons. Most pins come in from the piston sidewall, but some come down from the crown. I imagine most of the guys capable of rebuilding their own engines would be able to grind the ring ends to accommodate whatever pins there would be on their particular piston. Ted

the company rep called me. i chatted. he sent follow up email. got spec info from steve w sent to company rep. he asked for clarification of ring end cut. so progress made and so far they haven't said no.
also talked on getting other rings made. with 50 order minimum might be hard to get specialized rings and/or sizes. we'll see.