well, after getting a new best in her car, everything went downhill from there. next run, it tossed the main belt. so, IROCBeerBeer and i go to the parts store and get a new one. get one and have time for one more run. i toss the belt on that run as well. found it at about the 100ft mark. car missing pretty good. limped it to the shop. figured it broke a valve spring. well, i'm not so lucky on that one. pretty much figured out it's piston damage. haven't taken anything apart. here's pics of what's left of the #2 spark plug.

 

That sucks man. I experienced that a few times and finally I broke every ringland off #7. I do feel your pain.

 

#7 i could understand. but #2?

 

wet or dry? Maybe check the injector.. How were the rest of them?

 

wet. pulled #4 and it's fine.

 

Pull the injector and have it tested... #2 is strange to burn up.

 

the plug was dark from fuel stains just like #4. i used a boroscope to look into the cylinder. from what little i could see, i don't see any scarring of the wall. piston top looked okay. all i could see clearly was from 12:00 to 3:00 position of the wall and most of the piston.

 

well, i have the good, the bad, and the ugly of the motor. i took the passenger head off today.
the good - not the piston. not a scratch on it.

the bad - it took out the exhaust valve and part of the head.

the ugly - the following pics

 

Like I said in another thread. Visual isnt usually the best case. When I destroyed every ring land on my #7, my piston look great, the cylinder walls, looked great, but I pulled the piston out and got pieces. Fix the head and see what happens

 

in your case, did you have any head damage? i know, i'm trying to go the lazy route. new theory is it leaned out and burned the valve up. where it's missing the big chunk is right where the spark plug is pointed at. when i take the front cover off to put the cam in, i'll see if i can locate and piston pieces.