Piston Ring Positioning and Ring Gaps for the 500 J-engine BB kit

[sam2019]

The chrome ring is on top, the black ring is second.
The orientation does not matter (which side of the ring is up).

Position the gap at 10 o'clock and 2 o'clock for the top 2 rings, the oil ring ends need to be over the piston pin so as to away from the oil holes.
The spacer ends of the middle part of the oil ring face upwards.

 

[sam2019]

Ring Gaps:
3 to 5 thousands of an inch gap per inch of bore.
Top ring should be less than second ring
Measured 1 inch down from the top, meaning: put the ring in the bore and push it down with the piston at least 25mm from the top so that the ring is "square" in the bore (same distance down all round)

13 thou top ring, 16 thou second ring is good

More info here:
https://wossnerpistons.com/pages/4-cycle-ring-end-gap-calculator