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MoparDak
Dodge Dakota
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4/16/2005
08:40:26
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 Subject: Underdrive Pully.............
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how much of a power increase,? Low end. or Top End?
just curious,
an underdrive pully kit, Socal Dakota states a 8 + HP increase and a 27 + lbs of Tourque for the 4.7L motor, is this accurate?
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Kaderdak
GenIII
 
4/16/2005
12:47:25
| RE: Underdrive Pully.............
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I just installed a set of march underdrive pulleys, included the crank, water pump, and alternator. They look really good and it felt like it probably did produce a bit more power, probably throughout the range.
A word of caution, if you run a lot of electrical stuff in your truck or do a lot of city driving at idle or low rpms, you may want to reconsider. Even just running my headlights and cd player my alternator can barely keep up at idle, I can definitely see the headlight dim. Obviously, if you maintain some decent rpms, like in highway driving, you're fine. It just seems that at idle and low rpms the alternator has a hard time keeping up.
** '97 Dakota 5.2L 4x4 w/3.55(my best ebay purchase yet) **
** Homebrew CIA, Dynomax Catback, March Underdrive Pulleys, Transgo Kit **
** Borg Warner Brass Cap/Rotor to Taylor 8mm wires to NGK plugs **
** Homebrew dual electric fan setup with 180* thermostat **
** Sitting on BFG 31 x 10.50's **
** Tons more once I'm not a poor college student :) **
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MoparDak
Dodge Dakota
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4/16/2005
13:37:12
| RE: Underdrive Pully.............
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how many Pulleys do you have to install, what comes with the kit, from SoCalDakota, it is about 235 dollars, is that the whole kit?
does anyone Know?,
are they easy to install?
thanks,
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daddio
Dodge Dakota
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4/17/2005
12:43:22
| RE: Underdrive Pully.............
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i installed just the crank pulley and it addeda little and no charging issues at all. i didn't want any so that's why i did just the crank.
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athenianR/T
Dodge Dakota
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4/17/2005
18:47:32
| RE: Underdrive Pully.............
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yeah, the crank alone shouldn't cause overheating or charging issues. I think the kit from Socal is all three, read the listing closely, it should say. the biggest pain is gonna be that alt pulley, unless you've got an impact gun its not gonna want to come off. for the price, I'd say you're better off leaving these until you've milked everything else... cams, headers, etc...
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athenianR/T
Dodge Dakota
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4/17/2005
19:10:13
| RE: Underdrive Pully.............
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just looked, so cals pulleys, are listed by year, they offer two for 235, the one for the 4.7 is the crank alone, the 5.9 is the crank and alt, just remember the cost is high bc the 2000 and up had a one piece halmonic balancer/crank pulley... if you wnat three pulleys, alt crank & water pump you'll have to swap out to an earlier style harmonic balancer with the three bolt pulley design.
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MoparDak
Dodge Dakota
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4/18/2005
11:50:19
| RE: Underdrive Pully.............
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yea, that was the one I was looking at athenianR/T.
I thought it was the crank alone, that is the only one a really want to install anyhow.
here are my mods sofar, so I think I will get the Pully Kit for the 4.7.
Mopar HO cams
Gibson Headers
F&B 70mm Ported TB
K&N FIPK II
Flowmaster Exaust.
P.S. I wouldn't even think of getting the Pulley if I didn't have these mods.
thanks for your advice.
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another mark
Dodge Dakota
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4/22/2005
01:01:45
| RE: Underdrive Pully.............
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Been there, done that with another vehicle. Wasn't worth it. Even if you did get 8 horsepower, so what? You can't feel it. You'd be lucky to even see it on a dyno run. There are better ways to spend your money and time than changing those things out. I wouldn't even mess with the alternator pulley, not worth whatever trade off it gives you when it comes to electrical reliability.
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N56629
Dodge Dakota
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4/22/2005
06:45:11
| RE: Underdrive Pully.............
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"Been there, done that with another vehicle. Wasn't worth it. Even if you did get 8 horsepower, so what? You can't feel it."
You could say that about almost every mod. Five hp here, eight hp there and another six here all add up. In this case that's nearly twenty hp. I wouldn't want to judge which ones are worth it an which ones. If one had to judge them individually they probably wouldn't do any of them.
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MoparDak
Dodge Dakota
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4/22/2005
10:23:04
| RE: Underdrive Pully.............
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You can talk HP, but you drive TQ, from what I hear, the Underdrive Pulley adds a pretty good amount of Torque.
From SocalDakota,
27 + TQ, Is this Accurate?
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athenianR/T
Dodge Dakota
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4/22/2005
17:10:01
| RE: Underdrive Pully.............
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HP or torque, the main benefit is that it lessens the load on the pulley system, allowing the engine to REV faster... so it will add something, even if you don't see any numbers change... and yeah, 5-10 HP won't show much by the time it hits the wheels, but its HOW MANY 5-10 HP gains you can add that makes the difference. thats the main benefit of a free flowing muffler.. NO matter what anyone says, a muffler hardly affects the power an engine can produce, but it can allow it to build that power much faster. try it on a dyno, and seee how sharp the hp and torque curves build up too.
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Jeffster
Dodge Dakota
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4/22/2005
18:00:48
| RE: Underdrive Pully.............
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I saw that also at the ASP site they claim 8hp+ and 27lb tq+. If this is true that's substaial and I will be adding that to the engine I am working on for sure.
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rtdkota
R/T
4/27/2005
22:37:49
| RE: Underdrive Pully.............
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Those numbers on my website are from ASP directly-- I can only go off that for now.
On my 5.9L, combined with a Viper fan (no clutch fan) the increase off idle was BIG.
Worth it in my opinion.
Sam
www.socaldakota.com
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MoparDak
Dodge Dakota
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5/03/2005
18:45:46
| RE: Underdrive Pully.............
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So........is the Crank Pulley Kit worth it>?
will the pulley help?
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daddio
Dodge Dakota
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5/04/2005
08:52:31
| RE: Underdrive Pully.............
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i did notice a difference with just the crank pulley on my '00 QC 3.9. but hey, i only paid 25 bucks for the crank pulley from an old member here.
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