Thanks guys for your help.
I'll test the rings here for 1 piston that do not cost much. If they will not fit I know where and how to find correct. It is only one oil ring I need to start with. All rings are used but not much. Hone the bores in the 67mm cylinder I have and install in another engine not found yet.
Got answer today obout the ring depths.
- 67 x 1,5 x 3,0 Chrome-plated ring
- 67 x 1,5 x 2,6 Scraper ring
- 67 x 2,8 x 2,6 Oil control ring
I'll order and report how they fit.