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underdrive pulley set?

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Old 03-26-2012, 07:40 PM
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Default underdrive pulley set?
i've been hearing more and more about underdrive pulley kits and the performance gain from them. are they really worth the money? do they make a noticeable difference? has anybody had experience with these?
 
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Old 03-26-2012, 07:47 PM
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Well the science is solid... Gears would be a more noticeable gain
 
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Old 03-26-2012, 07:50 PM
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i have the hughes underdrive crank pulley, and i like it. there is a noticable throttle response change(for the better), and it seems to get up and go a bit better now. more low end torque so it seems.
 
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Old 03-26-2012, 07:54 PM
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Originally Posted by 2x1972
Well the science is solid... Gears would be a more noticeable gain
an underdrive pulley set is also noticeably less expensive than gears lol
 
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Old 03-26-2012, 08:23 PM
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would i use the stock serpentine belt or do i need a shortened one?
 
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Old 03-26-2012, 08:25 PM
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What are these so called "under drive pulleys" anyway
 
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Old 03-26-2012, 08:30 PM
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Smaller diameter pulley/s. Makes the belt turn slower, so the engine is doing less work. So more power is going out the backside of the motor instead of the front
 
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Old 03-26-2012, 10:54 PM
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Originally Posted by 2x1972
Smaller diameter pulley/s. Makes the belt turn slower, so the engine is doing less work. So more power is going out the backside of the motor instead of the front
How will this effect cooling and Charging, seeing how the water pump and alternator will be turning slower ?
 
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Old 03-26-2012, 11:20 PM
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Originally Posted by Hylander7
How will this effect cooling and Charging, seeing how the water pump and alternator will be turning slower ?
Volt gauge may get a little bit lower at idle, and thats about it. If you live in a hot climate, E-fans would be the ticket there, if it ever became a problem.
 
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Old 03-26-2012, 11:40 PM
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Originally Posted by HeyYou
Volt gauge may get a little bit lower at idle, and thats about it.
That's exactly what redneck_ram said about his.
 
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