Hypereutectic pistons and failures related..
I had a problem with them. I wish i knew where the pictures were at. There was a rod sticking up threw the top of the intake.
i would rather run heavy trw forged pistons than kb hypers. I think they have went the way of menards and walmart products. brand name but cheapened up to sell.
In a motor that will never turn over 5500 i think they "might" be alright. Over that rpm is just dancing with the devil. imo