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underdrive pulley

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Old 02-24-2011, 11:20 PM
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Default underdrive pulley

i want a lightweight underdrive pulley for my 1998 hyundai elantra, where can i getone, is it bolt on? as in using the same belts?
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Old 02-25-2011, 01:03 AM
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Under Drive Pulley



As for a Belt you will have to take your belt and compare to other ones, Mine is to old to see the numbers, but i know the stock belt will be to lond, as the new pulley will be about a 3/4 and inch smaller in Diameter. Belt just needs to be like 1/2" shorter, as you can adjust the belt tightness with the altenator.
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Old 02-25-2011, 09:14 AM
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That will fit my 1.8
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Old 02-25-2011, 09:25 AM
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meh, dont bother with an underdrive pulley.
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Old 02-25-2011, 08:32 PM
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YES, Also Belt you will be wanting is a Goodyear GatorBack 4040332 That is the part Number. Mine broke today, after 5 years of abuse. So i gots to get a new one.
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Old 02-25-2011, 10:05 PM
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haha thanks i just bought the belt and pulely on ebay both for 80 bucks, i cant really afford buying parts right now cuz i got into a lil accident with my car but my belt was kinda needing replacement so mine as well do the underdrive pulley ehh?
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Old 02-25-2011, 11:20 PM
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I actually like the underdrive pulley, it makes the steering feel a little more sporty, but i would suggest it, if you like to listen to Bass, and have a huge stereo, as it does make your Altenator less effecient.
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Old 02-26-2011, 07:39 AM
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I run a full pulley set, used to have 2 12"s in the back with a full system and no capacitor. Never had any lights dim or anything.



That was a young faze tho, now one of the 12"s is out and the bass is set at -6.
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Old 02-26-2011, 03:12 PM
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An under drive pulley will not change your power steering or alternator output. The RPM's is still the same as before. Just like if you have a supercharger changing pulley on the charger changes the boost not changing the pulley on the crank.
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Old 02-26-2011, 04:58 PM
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Originally Posted by red97tib
An under drive pulley will not change your power steering or alternator output. The RPM's is still the same as before. Just like if you have a supercharger changing pulley on the charger changes the boost not changing the pulley on the crank.




Red97tib. think about what you said, they supercharge pulley being changed, would make the overall RPM FASTER.. Making more Boost, just like when you put a underive Pulley on the crank, Now everything that it is driven off that pulley will spin at a slow RPM at redline, there for making it less effecient. Do not confuse being less efficient with not working!



When you saying changing pulley size doesnt change RPM that is crazy talk, that is why bike are geared and you change sprocket sizes.
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