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Old 13-04-2010
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960rc 960rc is offline
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Join Date: Jul 2009
Location: Australia
Posts: 53
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What motor?

looking at your banner its say LRP are you using a X12 7.5, then I would start on a 19 pinion (about 10.2:1). X12 have loads of bottom end and can run a little hot if not mated to th SXX speedo.
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