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Should i freshen up my top end?

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About two months ago I picked up a used 2006 250. Since ive gotten it ive put about 15-20 good hard hours on it. Now the p/o said its on its 2nd piston, he gave me the oem one and it looked good. But that catch is, I have no idea how many hours are on this one. Anyways i took off the pipe and saw a little blowby on the rings and thought it wouldnt be a bad idea to freshen it up. What would you guys do? (Compression is decent, not as good as my brothers 05)

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When in doubt,throw the old out.A new top end will give you "PEACE OF MIND" and you wont have that feeling of WHEN.

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yes, do a new topend. its a 2006, it should have had 8 new pistons by now. not 1, rebuild it

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yes, do a new topend. its a 2006, it should have had 8 new pistons by now. not 1, rebuild it

Do i need to ball hone the cyclinder when changing it? (assuming the cyclinder is in good shape)

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Look inside the cylinder and look at the head while you have it off make sure of no deep scratches or cracks

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Do i need to ball hone the cyclinder when changing it? (assuming the cyclinder is in good shape)

No just do like he said, scuff/deglaze it with wd 40 and a green scotch brite pad. should be good to go.

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