OK so went riding this weekend and quad ran great for 3-4 hours. Than started making a strange noise and died. Got home and pulled the head and this is what I found. Thinking it must have sprung an air leak that leaned it waaay out cuz my jetting is spot on. This is on the exhaust port side. I'm gonna build a leak down tester tomorrow and look for the leak before I do anything. It looks to me like no piston chunks made it into the bottom end.
My question is, should I split the cases to check the bottom end? I'd like to get this fixed ASAP since the weather here in MI is finally nice. Any advice is appreciated☺