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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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C = pie x D (circumferance = 3.1416 times diameter)

So, if your pulley is 5 3/8" diam, then 3.1416 x 5.375 says that the circumferance is 16.88 inches....or 429 mm. Divide that by 360, and every 1.19mm around the circumferance represents 1 degree.
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 04-23-2013, 03:01 PM
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