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AEM Pulley Kit...

 
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Old 07-17-2008, 06:36 PM
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AEM Pulley Kit...

I have researched my A$$ off to find any info on the AEM pulley kit...I bought these things a year ago, and finally found some time this Saturday to put them on...Does anybody have experience with these??? I was told by a fellow luder that he gained 7whp...I heard that they really dont gain whp, but just increase the acceleration of the car, especially in an automatic, to which one would realize a big difference in the lauch of the car...I was also told that they will shade up to .3 off the 1/4 mile...Any knowledge of other peoples rides or personel experience would be great...No matter what, the will be installed Saturday, and ill most likely post my reviews on them...And since im going to the track again next month, ill also be able to post if my 1/4 mile time changes....
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Old 07-17-2008, 10:33 PM
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I had them on my WRX.

Good rule of thumb is to look at it as if you reduced the weight of the car by 100lbs, not at whp.
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Old 07-17-2008, 10:49 PM
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Originally Posted by jdbhitman View Post
I had them on my WRX.

Good rule of thumb is to look at it as if you reduced the weight of the car by 100lbs, not at whp.
dont understand your point....a wrx is totally different from a lude bro....i guess i understand you saying their is no whp gain, but thats on a wrx...
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Old 07-17-2008, 10:59 PM
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I think it's possible that they could give a small gain in HP, but it couldn't be worth more than a couple of tenths, at the most.

How are the AEM ones different to OEM? Are they the ones that make everything else spin slightly slower?
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Old 07-17-2008, 11:07 PM
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can someone conferme that they make a difference on the auto's launch?
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Old 07-17-2008, 11:21 PM
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Icon14 ya think?

Quote:
Originally Posted by CHILLZ_VTEC View Post
dont understand your point....a wrx is totally different from a lude bro....i guess i understand you saying their is no whp gain, but thats on a wrx...
Not all that much. After market gains (in percents vs. engine HP)) are very simaler on any 4 cylinder.

I've modded a N/A DSM to a F/I Subbie.

Pulleys are pulleys, Just like a intake is an intake..
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Old 07-17-2008, 11:23 PM
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can someone conferme that they make a difference on the auto's launch?
Im sure you'll notice the gain in throttle response more on an AUTO.

I did, on my sisters Lancer OZ-R.
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Old 07-18-2008, 12:28 AM
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Iv always looked at it like this...... your pulleys are designed to spin your AC alternator and ps pump at hondas pre determined rate. This is accomplished by the belts spining off the pulley bolted to the crank. Common sense dictates that if you spin the alternator or ps or ac less the motor wont have to work as hard, IE free up some lost power.... the way pulleys accomplish this is either making smaller pulleys on the crank or larger ones on the attached devices such as your ac or ps pump.... Its kind of the same idea behind removing your AC compressor (without the weight loss)

Now with that being said the power you will gain is very negligible if any really ESPECIALLY with a 4 cyl motor. It really is going to have more determining factors then just the size of pulleys you use, like condition of bearings on your accessories. But please keep in mind that it is not just the one part you add but rather the sum of your parts. A pulley system will not be a great leap in power for your lude however it will add to the rest of your motor. All things being equal on two motors no other determining factors other then the pulley. The motor with the longer pulley stroke will out preform the motor without, BUT by negligible gains..... Again sum of parts

I actually preformed the opposite on my old jeep.... I wanted the pulleys to spin faster so while the motor was idling over obstacles, the alternator, PS where spooled up for use of winch and electrical gear....The water pump was also driven by belt so it helped with those hot days with high RPMS and low motion

I also put a pulley system on my mustang. i noticed a fair amount of freed up power HOWEVER it also came with a smog pump bypass pulley which in its self frees up a few horses... But your millage may very, from lude to lude it will be very different let alone from car manufacturer to car manufacturer

Hope this info helps..... Good luck.... If its any consolation Next time i have to change my belts I will be adding on a pulley system to my POS

Last edited by poohbear; 07-18-2008 at 12:30 AM.
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Old 07-18-2008, 12:34 AM
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poohbear, you seem to know what your talking about. will this small gain show any sign on the prelude auto lauch? or is it something not worth buying

Last edited by h22red; 07-18-2008 at 12:40 AM.
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Old 07-18-2008, 12:40 AM
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Originally Posted by h22red View Post
poohbear, with this can the auto feel a better launch? or will it feel the same?
To be honest if you want a better launch over your auto GET A 5-SPEED.... The gains you will make with this modification will help but im afraid its not going to help any where near the point your wanting it to. IMHO the gains will actually be felt less with an auto then with a stick. The gain is so negligible AGAIN IMHO that the gain will be lost in the slip you have in your torque converter. As opposed to just transferring to the seat of your pants if you get what im saying.
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Old 07-18-2008, 02:12 AM
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I have them on my car and there is a noticable difference. Just not much of one. If I were to guess I'd say only 1-2 HP max but more or less, it just reduces the load on the motor. It's not a direct HP increase. Similar to the kind of upgrade you get from putting on a lightweight flywheel, just on a much smaller scale.

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I think it's possible that they could give a small gain in HP, but it couldn't be worth more than a couple of tenths, at the most.

How are the AEM ones different to OEM? Are they the ones that make everything else spin slightly slower?
The AEM pulleys have a much larger diameter so it is easier for them to spin but i don't think it changes the speed of their revolutions. My car has the whole kit so I think they are proportioned to keep the factory speeds.

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Old 07-18-2008, 02:26 AM
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i too plan on upgrading my pulleys just not sure what company makes the best kit for my 98 SH. any suggestions? i've heard good things about the AEM and the Unorthodox Racing Pulley kit. comments and suggestions would help. thank you.
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Old 07-18-2008, 06:07 AM
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I have them on my car and there is a noticable difference. Just not much of one. If I were to guess I'd say only 1-2 HP max but more or less, it just reduces the load on the motor. It's not a direct HP increase. Similar to the kind of upgrade you get from putting on a lightweight flywheel, just on a much smaller scale.



The AEM pulleys have a much larger diameter so it is easier for them to spin but i don't think it changes the speed of their revolutions. My car has the whole kit so I think they are proportioned to keep the factory speeds.

They don't look under-driven, so you dont get any of the negitive effects. 'EG: dimming lights'.

Also, i would stay with AEM. If you go ebay you can run into some 'sh!tty' aka unbalanced pullys. Dont want that. Promise.
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Old 07-18-2008, 10:51 AM
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Originally Posted by poohbear View Post
To be honest if you want a better launch over your auto GET A 5-SPEED.... The gains you will make with this modification will help but im afraid its not going to help any where near the point your wanting it to. IMHO the gains will actually be felt less with an auto then with a stick. The gain is so negligible AGAIN IMHO that the gain will be lost in the slip you have in your torque converter. As opposed to just transferring to the seat of your pants if you get what im saying.
Yeah, i wish i could afford a 5spd swap now...I have had these pullyes for about a year and a half now, and just wanted to know other peoples opinion...I know how my car launches now at the track, so any improvement from the "before" launch will satisfy me...
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Old 07-18-2008, 10:54 AM
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Originally Posted by BravoElement View Post
i too plan on upgrading my pulleys just not sure what company makes the best kit for my 98 SH. any suggestions? i've heard good things about the AEM and the Unorthodox Racing Pulley kit. comments and suggestions would help. thank you.
I was gonna go with the UR pulleys, but just heard more possitive effects coming out of the car using the AEM ones...acceleration increase, which gives a better launch(especially on autos), and an increase of up to 7whp....Ill find out soon enough, as the are being installed on Saturday...
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Old 07-18-2008, 11:28 AM
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good luck i also have a auto. so keep us posted
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Old 07-18-2008, 11:41 AM
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Originally Posted by acardi View Post
good luck i also have a auto. so keep us posted
No doubt man....Ill only be able to tell the acceleration difference though, of course....Next month, i plan to go to the track again to see if it shaeds some tenths of a second off to get me at least in the high 16s...
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Old 07-18-2008, 03:31 PM
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Obviously you will get some gain...

I think 7whp is a bit too optimistic.

You know how mufflers on ebay say gain 10, 15, even 20hp.... not...

My motorsports shop thought they wouldn't really be a good idea on my daily driver... not so much that they would be problem, but that they really just weren't worth it. My eCtune did a whole hell of a lot more than pulleys could ever manage, but if you have money and want to do it go for it! I may at some point in the future if I get bored.

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Old 07-18-2008, 03:47 PM
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They definetly don't hurt anything and they look clean!
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Old 07-18-2008, 09:18 PM
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Originally Posted by mr_y82 View Post
Obviously you will get some gain...

I think 7whp is a bit too optimistic.

You know how mufflers on ebay say gain 10, 15, even 20hp.... not...

My motorsports shop thought they wouldn't really be a good idea on my daily driver... not so much that they would be problem, but that they really just weren't worth it. My eCtune did a whole hell of a lot more than pulleys could ever manage, but if you have money and want to do it go for it! I may at some point in the future if I get bored.

eCtune @ Blueridge Motorsports
yeah, i think 7whp is a bit too much also to have just from pulleys...but like i said, i have had these for a year, and i just want to finally put them on...
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Old 07-18-2008, 09:37 PM
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I hear ya man,

If I had them lying around they would be going on the car.
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Old 07-19-2008, 05:16 PM
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were can i get the aem pully for a good price?
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Old 07-19-2008, 07:27 PM
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^^^^^^ didnt aem stop making pulleys for ludes? I think they still make the upper pulleys like PS and Alt. but im pretty sure they no longer make the crankshaft pulley....
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Old 07-19-2008, 07:55 PM
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^^^^^^ didnt aem stop making pulleys for ludes? I think they still make the upper pulleys like PS and Alt. but im pretty sure they no longer make the crankshaft pulley....
to my knowledge they never made the crank pulley...they only made the PS and Alt. pulley...but just search online man...i paid 180 for mine...
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Old 07-19-2008, 07:57 PM
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^^^ i think your right i dont think AEM wanted to mess with the rubber balancing dapaner doo dad in the crank pully
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Old 07-19-2008, 08:01 PM
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http://ultrarev.com/product.php?productid=46112

a little pricey at this site but at least they are still available
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Old 07-19-2008, 11:07 PM
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^^^ i think your right i dont think AEM wanted to mess with the rubber balancing dapaner doo dad in the crank pully
I searched that UR actually has a stock diameter crank pulley that will not underdrive the alternator...they say that 80% of the gains are from weight loss...Im wondering if you can use this with the AEM pullyes, i mean if its the stock diameter, i dont think i would hurt anything...but they are pricey at about $200 just for the crank...you can get the stock diameter PS, Alt., and crank pulleys for about $350 i believe..."horsepowerfreaks.com"

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Old 07-19-2008, 11:17 PM
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http://ultrarev.com/product.php?productid=46112

a little pricey at this site but at least they are still available
Doesn't seem TOO pricey but do you think it's worth it?
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Old 07-19-2008, 11:30 PM
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im actually thinking about selling my AEM ones now...I just read the UR website, and they have the PS, ALT, and Crank pullies for the lude....They give 2.7 extra horses for each pound lossed from the crank pulley...that could be about a 10hp gain due to the weight loss...I would chill man, and do a lot of research on the UR pulleys and the AEM pulleys, and then make a decision...and if i acutally decide to sell my AEM pulleys ill let ya know....Thats only i they do not recommend to mix the UR SSc crank pulley with the AEM pulleys though...
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Old 07-20-2008, 07:15 PM
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Well so much for this thread...im selling my AEM pullies...check out the thread in the for sale forum...
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