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how much horsepower with Greddy Pulley set with alternator?

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Old Jun 6, 2002 | 07:10 PM
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how much horsepower with Greddy Pulley set with alternator?

Iam planning on getting the Greddy Pulley kit, I was wondering how much more horsepower I will notice and how much it costs? oh yeah and does the Greddy Pulley Kit come with an alternator aswell?
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Old Jun 6, 2002 | 07:21 PM
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greddy pulley kit, not really in HP in my opinion, it just helps with the responce...2-5hp maybe... Also no it doesn come with a new alternator....Just the pulleys...
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Old Jun 6, 2002 | 07:31 PM
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canman how much does it cost for these pulleys from greddy? and whats a good aftermarket alternator? I need the price it doesnt have to be exchanged to canadian for I can do that my self. I know of a place that can get greddy stuff here in Canada.
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Old Jun 6, 2002 | 07:45 PM
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The pulley kit goes for about $120 US... A good aftermarket alternator? why? If you need a better alternator, I dont know why you would but you can
have your alternator overhauled and chromed in the
states... I dont know where, but I know its readily available
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Old Jun 6, 2002 | 07:45 PM
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I had a guy tell me I could get 20 hp from the Greddy underdrive pulley kit. Could this be at all possible? And what would the cost be? And what is the advantage of a aftermarket alternator?
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Old Jun 6, 2002 | 07:49 PM
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20 hp from an underdrive pulley that sounds like a lot to me, I would think 10-15 Plus I didnt know greddy made that... Underdrive pulleys usually go for around $250 I think... I dont of any advantages of an aftermarket alternator, unless you run some mad speakers in your car.... I would think about it if I had an underdrive pulley since, those slow down your power to your accesories..
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Old Jun 7, 2002 | 01:00 AM
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Stock alternator is fine. Greddy pulley kits only add a few hp, but you can get 20hp if you put vinyl stickers on it.
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Old Jun 7, 2002 | 01:18 AM
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LOL. where would i place the vinyl? do i have to get the small ones that ricers print from their home computers?

Honestly though, i personally know a guy with the power pulley set, and when he dyno'ed his car, it only made 7 more hp. im not sure if the hp is more at higher HP levels though (his was somewhere around 260-300)
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Old Jun 7, 2002 | 01:21 AM
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Originally posted by GsrSol
but you can get 20hp if you put vinyl stickers on it.
Quick question, does it matter if the stickers are from parts that you have or can you just get any stickers?
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Old Jun 7, 2002 | 01:25 AM
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I seriously doubt if it unleashes any hidden HP. Use for it is to enlarge the water pump and alternator pulley to make up for the loss of contact surface from removing the air pump. Plus the water pumnp pulley has ruffles on the edges and doesn't slip as easily as stock. I've seen stock slip rather easily with just a little water.
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Old Jun 7, 2002 | 01:25 AM
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Black99, i think they have to be Mugen stickers, if im not mistaken. Or was it Comptech?
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Old Jun 7, 2002 | 01:37 AM
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Damn it! Damn it! Go figure! I was just by my local honda shop today to pick up my NAWWSSS , "trick" removable passanger floor peice and they were all out of Mugen stickers.
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Old Jun 7, 2002 | 02:04 AM
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I think the Greddy pulley kit is used only to remove smog pump. It might add alittle hp but nothing that will knock your socks off.
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Old Jun 7, 2002 | 03:07 AM
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How much horsepower? Sorry, but little to none. I doubt you'd see much difference at the rear wheels.

Unless you're eliminating accessories at the same time, underdrive pulleys really don't free up much, if any, horsepower. Reducing the number of accesories that the engine has to drive frees up power. The air pump, power steering pump, and the A/C pump all take power to drive, commonly called parasitic loss... get rid of 'em.

What the underdrive pulleys really do is what the name implies... underdrive, or turn at a reduced rate, the accessories on which they are installed. Specifically, the main (and pretty much only) benefit of the GReddy underdrive pulley kit is underdriving the water pump.

The only scenario in which this is really useful is if you use the car for track events and the engine is at high rpm for long periods of time. Underdriving the water pump under those conditions helps prevent cavitation. Cavitation can introduce air bubbles into the coolant, and air bubbles trapped in the cooling passages of the engine can cause hot spots to develop. Hot spots, of course, can lead to pre-ignition (detonation) and that can lead to engine damage.

Should you not use underdrive pulleys if you don't use your car for track events? By all means, install them if you want, but be aware that the gains are very small for a street driven car, both from a horsepower and functional point of view. And furthermore, it may reduce the output of your alternator.
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Old Jun 7, 2002 | 07:30 PM
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Originally posted by black99
Damn it! Damn it! Go figure! I was just by my local honda shop today to pick up my NAWWSSS , "trick" removable passanger floor peice and they were all out of Mugen stickers.
LOL, I what is up with that removable floor peice?!!@@ Do the ricers actually do this?? Or was it just that once in the fast & F>>>>??
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Old Jun 7, 2002 | 10:31 PM
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When I put my Greddy pulley kit on($120), AND removed my A/C & P/S, the horsepower gain was BARELY felt. It feels better normal driving, but overall I couldn't really tell the difference.

But any horsepower will do IMO!
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Old Jun 12, 2002 | 10:59 AM
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From: Minnesota, now in FL and I dont think I'm goin back
what about the full unorthodox set. They say like 20 hp, is that BS. Plus its like $450.
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Old Jun 12, 2002 | 11:03 AM
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Originally posted by m0t03
what about the full unorthodox set. They say like 20 hp, is that BS. Plus its like $450.
I've heard of up to 16 or so extra rwhp but that is the max that I have heard of. I would tell you but I sold mine b4 installing it (needed the money for an intake).
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Old Jun 12, 2002 | 11:07 AM
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From: Minnesota, now in FL and I dont think I'm goin back
Are those a bitch to install?

Mike
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Old Jun 12, 2002 | 11:21 AM
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Originally posted by jimlab
How much horsepower? Sorry, but little to none. I doubt you'd see much difference at the rear wheels.

Unless you're eliminating accessories at the same time, underdrive pulleys really don't free up much, if any, horsepower. Reducing the number of accesories that the engine has to drive frees up power. The air pump, power steering pump, and the A/C pump all take power to drive, commonly called parasitic loss... get rid of 'em.

What the underdrive pulleys really do is what the name implies... underdrive, or turn at a reduced rate, the accessories on which they are installed. Specifically, the main (and pretty much only) benefit of the GReddy underdrive pulley kit is underdriving the water pump.

The only scenario in which this is really useful is if you use the car for track events and the engine is at high rpm for long periods of time. Underdriving the water pump under those conditions helps prevent cavitation. Cavitation can introduce air bubbles into the coolant, and air bubbles trapped in the cooling passages of the engine can cause hot spots to develop. Hot spots, of course, can lead to pre-ignition (detonation) and that can lead to engine damage.

Should you not use underdrive pulleys if you don't use your car for track events? By all means, install them if you want, but be aware that the gains are very small for a street driven car, both from a horsepower and functional point of view. And furthermore, it may reduce the output of your alternator.
So for instance, I'm planning on using my future FD at the track as much as possible (Summit Point, WV) so an underdrive pulley set would definately be something I'd want to put on the car?
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Old Jun 12, 2002 | 11:50 AM
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but you can get 20hp if you put vinyl stickers on it.
Vinyl stickers?????

Oh crap! I just put up monster Oakley windshield stickers. I was told they were good for 20hp each!
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Old Jun 12, 2002 | 11:58 AM
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Originally posted by m0t03
Are those a bitch to install?

Mike
Yes!
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Old Jun 12, 2002 | 12:34 PM
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Originally posted by Section8
So for instance, I'm planning on using my future FD at the track as much as possible (Summit Point, WV) so an underdrive pulley set would definately be something I'd want to put on the car?
Yes, on the water pump at least, at any rate. The "crankshaft" (eccentric shaft) underdrive pulley kits can cause damage to the engine if they're not balanced with the engine's rotating assembly, so I'd recommend using GReddy's accessory underdrive kit. It's also about 1/3 the price and far easier to install, anyway.
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