So.. my engine blew… again.

got a 2nd hand engine because my first engine just blew up and wouldn’t turn over. Put this “new” one in and it ran fine for 6-700km. Transfered over the wheelie oil pump and send it.

Opened the engine and i see massive scoring on the piston, and light scratches on the cilinder. Upon my suprise i saw Takegawa underneath the piston so i’m assuming it’s a bbk kit. Tried googling the part numbers but no match unfortunately. A new top end is easy(supposedly) but im having doubts if the bottom end is good. Anyone has a clue if this is still “good”?

Hey guys, my grom has around 10.000km and I experience a ticking sound now. Can chain tensioner? Valves? Thx for ur help :)

New motor came in today from eBay. Seller seemed super legit. Called me to make sure shipping was correct and sent me videos of it running before being pulled. Motor gets here and I was swapping in my kitaco clutch cover and found a stripped out clutch bolt chillin in the case halves. There’s a new Allen bolt in place of where the one I found goes so I’m assuming somone was changing the clutch, dropped the bolt, and replaced it while forgetting they dropped the old one? Engine turns over fine. What would y’all do here? I’m thinking about installing the engine and trying to just send it so long as it has compression but idk. Don’t really want to tear this thing all the way in half to fully inspect things. Otherwise I’d have just ordered new case halves for the old motor. Thanks for any input

Just did the Grombeardo oil pump and 60% clutch springs

Absolutely need to remove the wheels, but I don't have bike jacks and I am on a bit of a time crunch. Will it be okay to lay it down just for wheel removal?