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Drilling Holes in Piston for Lubrication, Best way?
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[QUOTE="joeym4130, post: 1116357, member: 71994"] I have a RM250 and the Wiseco piston I got said to drill the 2 holes in the piston for the lubrication between the 2 powervalve ports. The last piston didnt have it, but I could see where there was extra wear on the piston from the absence of the drilling in that small area where the bridge is on the cylinder. What is the best way to do this, the actual drilling? I don't want to take like a center punch to the piston, it just seems like a bad idea, but I also dont want the drill to be going all squirrley when Im trying to do it. Any tips on how to do this cleanly? [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Drilling Holes in Piston for Lubrication, Best way?
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