Forged pistons?

mgbv8 · Post by **mgbv8** » Mon Sep 03, 2007 8:13 pm

Got the engine stripped now. As I thought. Both the front pistons suffered the same fate.

http://s205.photobucket.com/albums/bb27 ... 007007.jpg

Boosted LS1 · Post by **Boosted LS1** » Mon Sep 03, 2007 8:52 pm

I'd say that was detonation by the exhaust valve so it's getting very hot just there.

mgbv8 · Post by **mgbv8** » Mon Sep 03, 2007 9:06 pm

The left hand piston melted at the bottom of the bore. The right hand one melted at the top of the bore.
When number two melted last time, it was a the bottom of the bore, just as this one was??

The results are telling me somehting here. I just wish I knew what it was! Apart from, I'm running lean, flat out in 3rd gear...