you can see that the pistone is missing,the pistone arm is not looking that good.the exhaust valve made contact with the pistone at very high RPM and cozed this damage.the pistone came out from underneath.the engine bay cought fire and after buring all wires and plastic stuff it turned off by it self.but we repaired every thing and it is stell running as new.though the new engine isn't as powerfull as the old one.my old man sais "that is because you keep the pedal to the metal"