I am still looking into buying UR or AEM pullies. I am seeing mixed opinions. The UR look more risky with the crank pulley included but with more of a gain. I believe 5-8 HP with AEM and 10-15hp with UR. Is this correct?

 

I had the UR's tested on my car and they have been fine. They put down approx 10whp. Probably more since my car only had 1400 miles on it.

 

tested as in used for development?

 

aint worth the hp/dollar ratio

 

They just did the initial dynos on my car. Pulleys are more of a cumulative mod. For example, pulleys installed on a NA car might only put down 10hp, but in a Fi car it might put down 20hp. It's all a matter of the other mods that you have on the car. Like darrinb said, in your case it's probably not worth the money.

 

Darrinb, I always thought that your car was red. lol.

 

I just ordered the AEM pulleys for my car & I hope your theory about a car with Forced Induction is true. I got them from www.modacar.com for $125 + $15 S&H = $140 shipped. For that price, I couldn't resist.

 

I also read up some stuff about vibrations when getting either the AEM or the UR pullies....whats up with that?

 

I been hearding good and bad stuff about the UR pullies. Power is one thing but I heard something like messing up water pump and etc..is it true

 

Does the crank pully on either brand have the vibration damper on it that the stock one has?

 

Couldn't you say the same about the CAIs?

I've heard that the AEM pullies are for show and no go...meaning they are the same size and weight as the stock pullies, only prettier (colored). The UR pullies are supposed to be lighter and thus give you some power gains. Titand19 as well as Nashua have the UP pullies and have both seen gains. Not sure if anyone else has any dynos.

Haven't heard anything about the water pump.

 

It is true that Aem pulleys do practically nothing. Unless you have a crank pulley there is no point in changing the other ones. I was looking into the Aem, but found out that only 2 of the 3 pulleys are changed.

 

i've heard something like the pulleys might mess up the output to an aftermarket, high powered, audio system.....

anyone?

 

dues anyone have a link to get more info on the UR Pullys?

 

thats just the pic in my avator, I know what T titand19 stands for

 

I have the aem pulleys and they are definately lighter, why wouldnt they be? That would be pointless if they werent. I could tell a small difference while driving in power, but not much. The pulleys will reduce the amount of power your alternator is making, causing some light dimming in cases (such as mine at stops).

 

hey moforose, are the 3.0 pullies the same as the 3.2?

 

I think so, but dont quote me on that.

 

In my opinion i'll get the AEM for $140 shipped but I mean for around $350 for UR pulleys might as well spend a little $100~$200bit more on a NOS kit... I mean both the UR pulleys and n2o has their risks right?? might as well get more power out of the risks.... Just my thoughts...

 

the UR pullies knocked a couple 1/10's off my 1/4 mi. time.

there is a bit more steering wheel vibration, nobody is quite sure if they damage the engine or not. UR says they do not.

nashua has had his oil analyzed since his crank pulley install, and it was all good.

but for long term

i'll tell you in 30-40k. miles

 

I had the UR pulleys for like a year now and some 15 kmliles. Not a single problem other than some sqeaky belts that I fixed.

I will be running an Oil ATF soon (I have the samples). The reported ATF analysis for UR was not mine, nevertheless, it was very normal!.

 

The UR website talks all about their pullies, and they stress that 85% of the gains come from losing weight, not underdriving as you really don't want less water flow, less voltage produced, less A/C and so on. For every pound taken off the crank pulley you gain 2.2 HP. The type-S guys gain 12 at the wheels, so I'm gonna guess the TL-P guys like me gain 9 or 10 or whatever. Their tech guy said since our pulley does not serve as a harmonic balancer that no harm can result from changing it. Tomorrow I will do my crank pulley and will let you know how it turned out. I did not buy the three piece set as there were no real gains to be had other than doing the crank.

 

let us know how you like it chuck

 

2/16/02 dynoed 225hp torque 194
11/15/02 dynoed 231.0 hp torque 195.6 w/unorthodox pulleys
gain 6 hp torque1.6
Had aem pulleys first cound"nt fill any diffrence
stock crane pulley wt# was 11.4 #
unorthodox pulley wt# was 4#

 

I can't seem to do better than 15.1@93.3. Does anyone think I could get to 14.9 with the U.R. pullies? At this point I'll take all the gains I can get. Also what would happen if you have a big stereo and didn't use the alternator pulley? Any opinions would be greatly appreciated.

J.T.

 

Shouldn't you have more hp gains, since Chuck just said that you gain 2.2hp per lb. (your difference in the UR pully vs. the stock is a little over 7lbs.). So basd on this, you should have at least over 10-12hp gain. But I don't know, its been a long day so I may be missing something here...

 

the first year i had my car within a month i had aem cai, and aem pulleys, and i took it to the track but only got to run it once, which was 14.9 everything else stock, and not too long after that i added the UR crank pulley, and now most recently headers, but i can say that with all the pulley upgrades, i didnt "notice" any gains, but who knows, i havent ever had my car dyno'd either. does anyone else have the UR/AEM pulley combo? what do u think