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12-10-2006, 06:16 PM
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#1 (permalink) |
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power seeker
Join Date: Nov 2006
Location: KCMO
Posts: 80
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stupid question
whats the difference between overdrive and underdrive pullies?
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12-10-2006, 06:30 PM
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#2 (permalink) |
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Administrator
Join Date: Sep 2004
Posts: 6,366
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There really is no such thing as an "overdrive" pulley.
What do pullies do? They drive things, right? They turn acessories....things you need like a power steering pump, or alternator, or ac compressor. When you "underdrive" an acessory, you just don't drive it as much. This frees up some hp to make the car go forward. So, there is no such animal as an "over drive" pulley UNLESS, for some reason, you would want to install a pulley to make your ac compressor work harder etc...
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 Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email |
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12-10-2006, 06:56 PM
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#3 (permalink) |
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power seeker
Join Date: Nov 2006
Location: KCMO
Posts: 80
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http://www.3.8mustang.com/performanc...viewprod&num=5
this is what i mean, is that made just for superchargers?
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12-10-2006, 07:21 PM
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#4 (permalink) |
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Haul ass on regular gas
Join Date: Oct 2006
Location: San Diego, CA
Posts: 2,081
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its just smaller so it takes less power to run the supercharger
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2000 V6 mustang, K&N FIPK II, True Dual Flowmaster Super 44's, DiabloSport tuner, 9mm Stang wires, Smoked Headlights, Mach 1 chin spoiler, Mach 1 grille delete, smoked tail light tint,GT rear bumper,12in Rockford Fosgate Sub w/a 600 Watt Rockford Amp, Tinted windows 5% back 35% front. SOLD 
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12-10-2006, 07:21 PM
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#5 (permalink) |
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Administrator
Join Date: Sep 2004
Posts: 6,366
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Bingo! I sort of forgot about blowers. Yes, with a blower, you can change pulley size to drive the blower more....as in "overdriving" it to make more compression.
Pointless on a car w/o a blower.
__________________
Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email |
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