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Old 10-17-2005, 02:43 PM   #6
Bob Barry
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Join Date: Jan 2003
Location: New Jersey
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Drilling Pistons is something we used to do offroad. It does a number of things. One is you only have to buy one size piston. Ex: we always used losi 60's and drilled out what ever size you needed. Another reason is you know exactally what size the hole is. You are not counting on a mold to get it right. Third, you can make "in between" pistons. We used to run 55-6 you drill 2 holes at 55 and one at 56. I don't think that the average race can honestly tell the difference. I would drill pistons when I had to but for the most part I ran regular ones.
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