Anyone familiar with the 90 and 93 yz250?


Aug 14, 2007
I am looking at a motor to put in a 93 yz250. Its from a 90. I know the bike was changed alot in 93, but the engine looks the same. Does anyone know if it is the same engine from at least 90 to 93?
I looked up some part numbers and they are different, but from the outside I can not tell them apart.
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