Ok, I understand your frustration, its not a cheap thing!
what exactly do you have a stage 2 srx kit? what is the jetting your currently using, pilot jets? needle pos? and main jet? does the sled have a tempa flow? or any mods to the airbox, like bender cold air kit etc?
when this sled comes apart when is it, cruising in mid range? topend wide open?
Any chance you could post a pic of the piston tops for me to look at?
The reason I say detonation is this, to break off the exh side of the skirt is the detonation violently shaking the piston, the forged piston is stronger then the thinner cast skirts are, and once they(cylinder) are over bored they are thinner then stock, but it all comes down to being either lean some spot somewhere in the fuel curve or the heads are not correctly set up. The head set up, and other more minor issues is what was wrong with Matts CPR 780 (madmatt) . Alot of times just because you have detonation doesnt mean the piston will be all melted or destroyed, it can happen in small increments but wreck the engine slowly, this how a tempa flow does the damage, slowly over time.... usually, then finally once the ring is exposed a squeeky sound happens and it coast to a stop. If you can answer those questions above I will try to help you the best I can, thanx
