I noticed something odd on my old pistons, from one of 2 engines I had. One of them I bought from someone so I don't know what was in it. The tops of the pistons have P14 on them, and these are dished a bit, not flat. Anyone know??

 

Nobody has a broken-down motor lying around, or extra pistons for that matter?

I just want to know what it says on top of h22a pistons.

 

Hell, I never looked twice when tossing mine out the door... sorry!

 

92-96 prelude is P13.

im not sure if they changed on 97 up.

btw i just went and looked at a set of factory pistons from a 93 H22A to be sure before i answered this question.