I did try search, maybe I did it wrong.
bike in question, my friend steves 86 R80 Rt with compression down in one cylinder by about 30 pounds. OIl squirted in brings it back up , not fully, but up.
leak down confrims its in the rings. He jsut finished a 4k road trip and used more oil than he expected to. so when the winter hits we might do an upperend overhaul. Before the trip it was only down about 20-25. The bike now smokes a bit
I say might because he is debating moving up to a k bike and is concerned that we will get into this one, and have to do heads, which can run 300+l
so I am pricing out parts for him for him to decide what to do. so he might not put rings in. I told him, it would sell better if we did. even if all we did was hand lap the valves. in the years I have been helping him, we have seen no valve recession
bike now has approx 70k
engine 5+ years back ran witout oil, bike parked and sold.
4 years back , pan dropped, cyls pulled and all inspected and put back togthere wiht just new gaskets and seals . ( By steve,his first major job, thas when we met)
going on line to max etc, the rings alone would run about 85 a side.
(160 for pair)
rings from motobins would run 58 plus shipping for both sides
years back I did my bike using Deves rings, approved for nikasil, but they run about 100 for both sides. since then I have heard negative about deves.
so what is the recomended set to install, is motobins rings ok, is there another line/brand we can look into ?