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2nd Generation Specific 1986-1992 Discussion

Altenator Pulley from rotary innovations

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Old 10-15-2002, 07:35 PM
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I'm curious about the alternator pulley form rotary innovations.





I have a racing beat unit and I'm tired of having low voltage at idle with the lights on and my power converter on when I installed this unit. THis unit is an underdrive pulley.



Is the rotary innovation not a underdrive pulley, same as stock right? I'm curious about your opinion.



C
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Old 10-15-2002, 07:44 PM
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If the pulley you are considering is the same diameter as the std one it will behave like the std one

If it is bigger, it will underdrive, smaller will overdrive
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Old 10-15-2002, 07:53 PM
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Thanks Rob but that's the question I"m asking, if some has comperated the pulley to the stock one?
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Old 10-15-2002, 08:45 PM
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OIC! Sorry
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Old 10-15-2002, 08:49 PM
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No it is not an underdrive pulley, it uses two of the stock belts. I have one on both of my rx-7's.
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Old 10-15-2002, 09:04 PM
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Originally Posted by Robbomaz' date='Oct 15 2002, 09:45 PM
OIC! Sorry
Is ok rob, Don't worry, be happy! :wave:



Did you have any voltage drop at idle, more than usual phinsup?
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Old 10-15-2002, 09:05 PM
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No, no change at all on either car. Just my belts stopped squealing at high rpm.
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Old 10-15-2002, 09:08 PM
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The pulley is a great investment. I love it, belt doesn't screech and its doesn't drop my amps even with stereo and sub on at idle.
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Old 10-15-2002, 09:20 PM
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same size as the stock pulley......great buy and cheap too!
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Old 10-15-2002, 09:28 PM
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Sounds like is sold. Is price just right. Now who wants to by my racing beat one. lol
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