I was told by varies people that Piston and Oil rings gap has to face a certain way like the first compression rings should be at like 2 or 3 o clock, the second at like 9 or 10 o clock, the main oil ring at like 5 or 6, the upper oil ring a little to the right of that gap, and the lower ring to the left of the main oil ring gap.

Anyone ever tried Ebay generic B18c5 pistons? I dont know if i can trust it. Any feedback on it? Theyre so cheap that it sounds too good to be true. Heres the link: http://cgi.ebay.com/ebaymotors/97-1-...Q5fAccessories

 

I couldn't find a B-series piston ring diagram.

Here's a thread on Nippon pistons. They seem to be cheap but still okay to use. I would personally buy Honda pistons.
http://hondaswap.com/engine-building...ny-good-90985/