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Old September 10th, 2009, 23:30   #77
ILLusion
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Join Date: Jun 2002
Location: Toronto
Yes, there are different types of cylinders. Standard cylinders and bore up cylinders. Bore up cylinders have thinner walls, which allow for greater air volume (and thus, a larger cylinder head stem, larger air nozzle, and a larger piston head to make up for the larger surface area that needs to be covered.)
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