Full Force carnage......
 

She broke good this time...... hole in piston, broken valve....no cracked head, no cracked block, thats good... should not be too big of a deal to fix, I have all winter..pics are nasty!! Valve stem punctured piston, thats where my water in oil came from...

http://i36.photobucket.com/albums/e4...g/P9080150.jpg
http://i36.photobucket.com/albums/e4...g/P9080148.jpg

I have seen that before, it appears you got off lightly.

My buddies engine dropped the valve due to a bad guide. the base traveled through the intake and wrecked another piston ,head, broke the rod and screwed the block.

Yea, I really think this is best case... just need a piston and refresh, and valves of course..

You did get offf lightly. Usually, pieces of the piston will cross over the intake and trash the other side as well. I have seen then open a cylinder up like a sardine can. Give me a shout if I can help. Good luck, Eddie.

Looks familiar..... happened a few weekends ago in the 598. A piece of the valve traveled over to the other side and damaged the opposing piston as well. Doesnt look like the block is damaged at all, which is really suprising. Something stuck the intake valve open though, and busted the retainer.
http://i690.photobucket.com/albums/v...119/Piston.jpg
http://i690.photobucket.com/albums/v...ck119/Head.jpg

Yep....been there...not as lucky as you. I lost a chuck of the block and the head.

Sorry to hear you had issues :(

Been there, done that. Just like me you got lucky. My head cracked the between the exhaust and intake seats. Dropped the exhaust seat and exhaust valve took out piston. I caught mine in seconds. I only had to hone my cylinder.
http://i43.photobucket.com/albums/e3...e/DSCF0149.jpg

Ahhh.. and we love these money pits!!!

I'm in the same club and I only realized an issue when a chunk closed the gab on the plug.
Eddie has my engine now for a rebuild and looking forward to what he can do with it.

Yes we do :)

If you go with the same piston style and have to bore it, I have 7 0.070" JE/SRP Merc 420 pistons. Just buy 1 to complete the set. $125

Ok, thanks!

I thought I would share my mishap from last winter.

Why is this happening so much???

Hit the rev limiter to often, then you end up breaking a value spring, then sooner than later you break a value.

Ethanol fuel.

Exactly

I was at Norfork lake in AR and the marina had 93 octane, but was almost the same price as fuel on land which means it had ethonal. I thought I was safe with the 93, but found out not so much.