Spagina
PR Elite
I recently purchased a nearly new 2002 cr 250... it still had stock chain and sprocets, plastics and graphics. the previous owner said he had replaced the top end 5 hours ago. i rode the bike 3 or 4 times but i dont trust what people say so i just tore the bike down and am rebuilding it this winter.
i have always ran a 16 oz bottle of oil to 5 gallons. is this too lean?
the reason i am asking is because when i tore it apart everything looked GREAT. cylinder still had all the cross hatching with zero vertical marks, pison looked good, etc.
the only thing is, there is next to ZERO carbon in the head or on top of the piston. there is a little bit of brown on the exhaust side of the dome of the head, and also some blow by that actually goes 1/16 of an inch below the 2nd ring on the exhaust side of the piston that is brown. but no real carbon
i just dont wanna fry anything and usually i feel like there is a little more oil buildup than that.. am i wrong?
i have always ran a 16 oz bottle of oil to 5 gallons. is this too lean?
the reason i am asking is because when i tore it apart everything looked GREAT. cylinder still had all the cross hatching with zero vertical marks, pison looked good, etc.
the only thing is, there is next to ZERO carbon in the head or on top of the piston. there is a little bit of brown on the exhaust side of the dome of the head, and also some blow by that actually goes 1/16 of an inch below the 2nd ring on the exhaust side of the piston that is brown. but no real carbon
i just dont wanna fry anything and usually i feel like there is a little more oil buildup than that.. am i wrong?