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Piston doesn't fit cylinder

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Hi,

 

I just opened my 99' CR250R top engine and removed the old Wiseco piston.

IMG_9282.JPG

When i put the new Wiseco piston inside the cylinder it wont go through smoothly. It gets stuck in the middle...

How could it be if the new piston i bought is a standard bore piston and not for an oversized cylinder?

 

BTW I prepared the cylinder before installation by doing honing.

 

Thanks

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Time to breakout the micrometer and bore gauge.  Always measure before installing so you know it's the correct size.

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