[PAUL K]

Originally Posted by Kenth

Hardly the pistons fault if the mechanic is ignorant.

Agree 100%

When you build engines for a living you don't want your customers having an issue. I've personally run KB Hypereutectic pistons in my own build and was happy with them. They were in a 1971 HO that ran bottom twelves on motor and high tens with spray. Never had an issue. May not be as good of a story with a 9:5 build and the guy gets a tank of 87 octane that's marked 93. The piston might launch into orbit before the driver here's any pinging.

KB hurt themselves when they first introduced those pistons. All their advertising was spent promoting the product and talking about how great they were. Little was ever mentioned about the increase in top ring gap needed and they never talked about them being octane intolerant. Folks were ripping the tops off those pistons more often than not due to using a standard ring gap. It took quite a while before they highlighted the ring gap issue and had advertisements make note of it also.