you know i was thinking while reading this post all 7 pages mind you, that he mentioned earlier on that his plug gap eroded to .30 from .25 and the thought popped into my head that he was getting detonation and that was causing the plug wear.
Thanks for reading and commenting, I think the plugs i am running are a non resister race plug by ngk and i had about 5000 miles on them and 25 drag strip runs so i hope it was just normal wear im thinking it may have been bad gas as i did not have any sign on the plug just prior to this breakage #1 looked to be the richest plug and #4 was the one i was worried about as it showed lean and showed signs of detonation so I turned the fuel pressure up 4 psi from my normal street closed exhaust setting before I had this piston failure and i set the timing back to 10 degrees from 13 so im pretty confused as to why this happened when I was taking every precaution I thought.
Lol thats funny you mention that I have a warrior too with a J&E 12-1 piston, dg exhaust, megacycle race cam, 38 mm mikuni carb and a few other tricks, I can give a stock 450 a good run and raptors I can run dead even with, the little 348 cc 2 valve just screams to 10,000 rpm.Wow that piston chunk flying out like that is ridiculous. Good thing nothing was destroyed. The same thing happened to my yamaha warrior 350 quad and destroyed the head, cylinder, crank, and a few gears. Nothin like a chunk of metal causing you to pull the wrist pin out of the piston!
Thanks for the comments and input I do appreciate it..!