Filing the rings is a pretty simple process. Using a smooth flat file clamped in a vice helps simplify the job. Ring filing must always be done with the outer ring edge as the leading edge. In other words, always file by moving the ring right to left as in the photo. Having the outer face of the ring as the leading edge reduces the chance of chipping the protective coating on the rings outer surface. We only file one side of the rings and do your best to keep it square when the two ends are squeezed together. After a few passes on the file, take the ring back to the engine block and check for fit. .
You can gap the the two thin oil rings a little larger (about .008") which will reduce the amount of friction they have against the cylinder wall. When all of the rings have been gapped and are ready to be installed, we start with an oil ring in the bottom slot of the piston. Next we install the corrugated ring on top of the oil ring. You can use a pair of wire cutters to snip the corrugated ring to size. Now we install the second oil ring on top of the corrugated ring so the corrugated ring ends up being sandwiched between the oil rings. It's a tight fit, but with a little patience you will be able to work the rings into place. Now compare the two thick rings and notice that one is all black (scraper ring) and the other has a shiny chrome edge (compression ring). Install the black ring into the center slot on the piston. Install the compression ring in the top position on the piston.
The positioning of the end gap on each ring is very
When looking at the top of the piston, the end gap of the top ring should be in the 12 o'clock position. The end gap of the second ring should be at the 6 o'clock position. Place the corrugated ring at 12 o'clock, one thin ring at 3 o'clock and the other thin ring at 9 o'clock.