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That is definately not a det. killed piston...When they 1st started adding alcohol to all the gas We had alot of those, not burnt all the way thru but a bad spot on the exhaust side, running down to the ring...causing the drop in power...a couple of factors come into play here, the fuel is most likely the cause...when they add the alcohol, it takes 1.4X the fuel to keep the stroker happy, thus making it a tad lean on top...Not all 2 smoke oils are compatible with "oxygenated fuels"...In some cases I've seen this shit is up to 40% alcohol...It runs great at the lower rpms and throttle area's...But on top when things tend to get lean it leans way out and you get a melted edge,Coulda just been a fluke... When was the last time the motor was gone thru ?
I think atie's been smokin'OUTA THE BILLY BONG
Artie,are you SURE that YOU aren't missing a ring or 2? LOL!!!!!
hirunning lean could be bad fuel or exhaust leak near cylinder just my 2 centscheers