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OEM Crank Pulley

I'm not an expert in these matters by any means, but don't people typically install an overdrive alternator pulley when installing an underdrive crank pulley? You might want to check

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Old 04-11-2014, 11:13 AM   #1 (permalink)
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I'm not an expert in these matters by any means, but don't people typically install an overdrive alternator pulley when installing an underdrive crank pulley? You might want to check that out if you are switching back to OEM.
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Old 04-11-2014, 11:52 AM   #2 (permalink)
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I'm not an expert in these matters by any means, but don't people typically install an overdrive alternator pulley when installing an underdrive crank pulley? You might want to check that out if you are switching back to OEM.
NST pulleys come with 10% underdrive crank and 10% overdrive alternator pulley. It's done to maintain stock voltage.
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Old 04-11-2014, 12:34 PM   #3 (permalink)
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Originally Posted by SS_Firehawk View Post
NST pulleys come with 10% underdrive crank and 10% overdrive alternator pulley. It's done to maintain stock voltage.
Is NST the only one to do this? Do people commonly run an underdrive crank with OEM alternator pulley?

Sorry for the derail, OP. Last one I promise
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Old 04-11-2014, 01:17 PM   #4 (permalink)
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I'm not an expert in these matters by any means, but don't people typically install an overdrive alternator pulley when installing an underdrive crank pulley? You might want to check that out if you are switching back to OEM.
Yeah I'm not either but by looking in the engine bay the only aftermarket pulley the previous owner installed seems to be the Stillen underdrive crank pulley, plus stillen doesnt make any overdrive pulleys that I'm aware of.
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