Hey guys, i have been offered a 2009 yz450f for an asking price of $800.00 . I know the guy who has it. He got it in trade. He owns a auto salvage yard. I will go to see the bike this week. What ive been told is the engine will turn but it doesnt have compression. I am up for a repair job at that price . I have a garage to use and a decent amount of tools ive used working on cars (not motor rebuilds). I havent owned a dirt bike since the yz125 i had in 2003 when i raced hare scrambles. Be sides that i ride on the road with a triumph speed triple but have only done oil changes and chain maintenance on that. He claims the rest of the bike is in great shape (we'll see). If the rest of the bike checks out, what do you think ? Is there any way i can tell if it is just a top end or if ill be splitting cases to do the bottom? This is a job id be willing to do on weekends for the winter and would like to be out riding when im through, im not looking to flip the bike for any prophet just hoping to get some thing to get back in the dirt on. Any advice would be hugely appreciated ( What to check, what to expect on having to replace besides what i can inspect externally) Thanks guys!