I just got some new piston rings for my b16a motor from JE Pistons. The top combustion ring and the second combustion ring have a little "N" etched in them. Does this designate a "this side up" marking or is that just a manufacturer's tool mark? what exactly is that "n" for?
thanks

 

I know that the manufacturing marking has to do with the orientation but I am unsure as to which side it faces. I will check my service manual when I get home because I think that there is also a notching that designates which side faces up.

 

OK. Just checked it. Manufacturing marks face upwards. There is also a chamfer on both the top and second ring. The top ring chamfer faces toward the piston and the second ring chamfer faces toward the cylinder walls. Hope this helps.

 

sweet man, that'll do it. thanks