Setting the Piston Ring End Gap

[Super-DA9]

When filing the rings try keeping the ring as square as possible. Dont push the ring on the disc, let the sanding disc do the work. WD40 works well lubricating the walls when measuing piston rings. Download the K20a manual and clock the piston rings/oil rings to that

Thanks for the advice, I'm using 15-40 oil to lubricate the walls at the moment.

If you don't mind me asking, what's the advantage with using the K20a OEM gap and clocked position on the B18C CP pistons??