Hi guys, Long time stalker first time poster. I have been having trouble with this bike since I bought it, here goes. When i bought my 1999 balius about a week after i bought it one of my cylinders exploded and the piston and con rod exited the cylinder via my leg. About a week later i put a zxr250c engine into it which from my research was the same engine. Since putting that engine in i rejetted it as a zxr250c (125s across all 4) which caused it to bog down so i jetted it back to a zr250 (98s across all 4) considering i didnt change the airbox with the engine i thought ill change the air filter to a brand new one and voila problems solved. I went for a hour long ride after that which then caused the bike to overheat and spew coolant out the overflow so i filled it up and the bike was fine. Rode all the way home again without issues. A couple of days after that I went for a 5 minute ride and the bike temp light came on and the bike started to sound like a lawn mower so i pulled over for two minutes and turned the bike off to cool down. I started it up and no noise, soon as i gave it throttle though the bike made the lawn mower noise again. I gave it a fair bit put the revs around 15k and it went away and i was able to ride home. I did some research and concluded the overflow of the coolant was due to exhaust gases, so i changed the head gasket torqued everything to spec and the came chain back on in the right timing but since then its had this clicking noise while running and when i accelerate it makes a deep farting noise (for lack of a better word) and is lacking in power, so today i changed the exhaustngaskets thinking there might be a leak and still the ticking is there albeit quieter and the farting sound and a pack of power is still there is still there.. Im at my wits end any ideas would be appreciated. In summary Overheated and sounds like lawn mower Changed head gasket Started making ticking noise and deep rumbling and loss of power Changed exhaust gaskets Also I have checked cam chain and tensioner as well, tensioner is working fine and cam chain looks fine Need help. Cheers, Jordan.