underdrive pulley
wait .. they do. 
Super Moderator
Joined: Sep 2001
Posts: 10,795
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From: Pflugerville, TX
Vehicle: 2000 Elantra
red97tib is clearly wrong somewhere and unable to understand it. Trying to explain it would be like tilting at windmi... oh, nevermind.
The debate is pretty well done on this: under driving your accessories frees up a very, very SMALL amount of engine power. Good luck finding a dyno chart to prove it. That is all.
The debate is pretty well done on this: under driving your accessories frees up a very, very SMALL amount of engine power. Good luck finding a dyno chart to prove it. That is all.
Senior Member
Joined: Jan 2009
Posts: 428
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From: Iowa
Vehicle: 1997/Hyundai/Tiburon
So I've been sick and haven't been on here to get a response. But your not going to see a noticeable difference. I could go outside and measure my two pulleys and tell you the actually output difference but I'm lazy and its cold out. Either way by the time you hit what 1500 rpm the voltage regulator kicks in and limits the alternator output. Hell it might even do it at idle I don't know what our alternators are limited at.
I know I have had an under drive on my car for about 80k and have never noticed any dimming or loss of electrics more than when it was the stock pulley. It did change my launch rpm at the strip and the response of the engine.
Supercharger reference I listed above I wasn't thinking about revolution but versus the locating distance so my bad on that. If somebody really wants me to figure the numbers on the ratio I can do that.
I know I have had an under drive on my car for about 80k and have never noticed any dimming or loss of electrics more than when it was the stock pulley. It did change my launch rpm at the strip and the response of the engine.
Supercharger reference I listed above I wasn't thinking about revolution but versus the locating distance so my bad on that. If somebody really wants me to figure the numbers on the ratio I can do that.
Super Moderator
Joined: Sep 2001
Posts: 10,795
Likes: 5
From: Pflugerville, TX
Vehicle: 2000 Elantra
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Joined: Feb 2010
Posts: 1,468
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From: Kent, Wa
Vehicle: 13 Gen Coupe Ult.
^^^ ROTFLMAO
Blah.. Im Done, I attempted to prove my case, and my Turbo timer posts present voltage, I dont hit 14.5 volts until around 5k. Anywhere under 3k Rpms i am around 11.5 volts then the Altenator kicks up the juice. Also i dont have a big stereo, or hids. So there is no extra power being pulled.
Blah.. Im Done, I attempted to prove my case, and my Turbo timer posts present voltage, I dont hit 14.5 volts until around 5k. Anywhere under 3k Rpms i am around 11.5 volts then the Altenator kicks up the juice. Also i dont have a big stereo, or hids. So there is no extra power being pulled.
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Joined: Mar 2009
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From: Halifax N.S. Canada
Vehicle: 2000 tib
"with many shots of Patron," off topic,but,I hear people drinking patron in raps too,excuse my ignorance as I'm from Nova Scotia,but,what is "patron??, beer ?wine?,champane ,hardstuff?,and what does it cost?
