underdriven pulley sets

[Svenerachi1]

okay, i understand the problem of underdriving the crank pulley and having the stock alternator and p/s pulley while trying to run a stereo.

But what about the 3-piece sets where they are all a little bit underdriven, if they were engineered correctly (which i assume is why they cost 300 bucks) then they would proportionately underdrive them to retain the rotations of the other pulleys.

So would this solve the loss of power to the alternator problem?

does anybody run either the unorthodox 3-piece set or the GFB 3-piece that can solve this once and for all??

[ivwarrior]

Just get a lightweight and be done with it.

[Svenerachi1]

I can't, i've got a 1000 watt amp, a 500 watt amp and then my headunit and i'm about to install a DVD player and 3 monitors, got the PSone ready to be hooked up but i'm waiting till i have the monitors and have installed them, I'm gonna try to do it myself, in which case i'll take pics and do a write-up in the DIY section.

So see, in addition to getting a capacitor, i'd like to keep my alternator running at peak and keep everything in the car happy

[Wiscon_Mark]

Just get a lightweight and be done with it.

I'd tend to agree.

I don't know of anyone with the 3 piece, but LegacyEJ22t has the GFB underdriven pulley f/s and he could tell you how it was.

[Huffer]

If you're installing or going to be installing a huge system, then going underdriven is asking for trouble.

What's the point anyway, all that extra weight you're installing would completely eliminate any kind of gains you'd make with lighter pulley's...

[Svenerachi1]

my sub weighs 20 lbs, the amp is 5 and wiring is about another 10, so its really not that much, besides when i get it to the point where it WOULD make a difference, I'll just cap off the wires, unplug the sub and amp and set them in my buddies car, only thing i can't take out in 15 minutes, head-unit included, is my amp wiring which weighs less than the rear seats, which are fairly easy to remove, had to about a week ago when i was moving

[Lawsonmh15]

Just get a lightweight and be done with it.

LOL. No doubt.

http://www.mrjosh43.com

http://www.subarureview.com/showreview.php?id=1176

[Svenerachi1]

so obviously none of you who replied bothered to read what i wrote. okay, here it goes again.
I do NOT want to argue the difference between the pro's and cons of lightweight vs. underdriven.

SO, what my question is: In a 3-piece underdriven pulley sey, is the underdrive on the p/s and alt. pulley's correctly engineered to offset the parasitic effect that we all hate about underdriven crank pulley's?

In other words, with the smaller diameter pulley's on ALL 3 pulley, is there really a downside, or is the problem still there, just not as bad, or completely compensated for?

The reason i ask is because if i'm going to spend 130 bucks on a single pulley that i don't need to replace, and then go spend another 40 bucks on a replacement OEM pulley that i need for the p/s pump, then i may as well spend the extra 100 bucks and get a three-piece performance set that comes with new belts (that cost $$$)

I've already basically decided to go with the 3-piece set, i'm just trying to figure out how fancy i need to get with my stereo to ensure i don't overload my alternator, or worse yet, underdrive my amp which could cause it to hurt my sub by not having enough current to draw on, distorting or sending bad signals to my sub. NOT what i want.

SO, again for those of you with an attention span like that of mine, the question is: Does the underdriving of ALL 3 PULLEY's negate the negative side effects of not giving the alternator enough rotations to fully power the vehicle, especially with an aftermarket, high-load stereo system.

[Wiscon_Mark]

SO, again for those of you with an attention span like that of mine, the question is: Does the underdriving of ALL 3 PULLEY's negate the negative side effects of not giving the alternator enough rotations to fully power the vehicle, especially with an aftermarket, high-load stereo system.

If it did negate that, what would be the point? If you retained all the power of the alternator and the P/S, then you wouldn't gain anything in the drivetrain.

[Svenerachi1]

If it did negate that, what would be the point? If you retained all the power of the alternator and the P/S, then you wouldn't gain anything in the drivetrain.

Yeah you would, because it would be easier for it to attain the pulley speeds its designed for, therefore freeing up horsepower, not creating any.

[Wiscon_Mark]

energy cannot be created nor destroyed.