Are pulley's worth it??

[mattilude]

Whats the point in turbocharging or supercharging a stock engine anyway?? how can a person force induct a stock engine?? THATS where the problems come in. I'm wanting an ALL motor engine first before I even THINK about forced induction or NO2. These kids go out and turbo charge their stock civics and crxs are completely WASTE their engines because they get impatient and want big power now.

[AcesHigh]

You're buying into the hype. We don't have some shitty Civic or CRX here, the H series is a great block. With a few mods here and there, it is pretty much bullet proof. But on the stock motor, you can still handle about 7 psi's with a turbo or supercharger.

[ciklude22]

Someone says that the stock pulley is dampened. WhenI pulled off my stock pulley I didn't see or feel and rubber or softer material, nothing but heavy metal. You can really feel the change in acceleration off the line. there is no drag and hitting 8000 rpm come that much quicker. I know everyone rags on pulleys but I know a few people with aftermarket crank pulleys and they seem to not have a problem and we run our cars to hell and back.

[Prelewd]

Originally Posted by ciklude22

Someone says that the stock pulley is dampened. WhenI pulled off my stock pulley I didn't see or feel and rubber or softer material, nothing but heavy metal. You can really feel the change in acceleration off the line. there is no drag and hitting 8000 rpm come that much quicker. I know everyone rags on pulleys but I know a few people with aftermarket crank pulleys and they seem to not have a problem and we run our cars to hell and back.

The debate constantly goes both ways with everyone. Some people swear by them, some swear against them. I wouldn't risk it, but that's me..

[AcesHigh]

The stock pulley has three layers: metal, rubber, and then more metal. It's in between. You need this dampening material as you get more power. In lower levels, you won't feel the vibration and it would seem like a great mod to have. Old little roadsters with puny hp counts don't have any dampening material at all. They don't need it. However as your horsepower climbs, the crankshaft begins to vibrate alot more. That vibration causes everything in your bottom end to vibrate. It doesn't take long for pieces to fall apart. The dampening material absorbs the vibration and extends the length of your engine's life. You're putting your engine's balance out of whack using aftermarket pulleys.

[VietBoy]

whats the difference between underdrive pulleys by AEM for the alternator and pump rather than the crank pulley by UR?
does the underdrive pulleys by aem do damage to engines life also?

[4-THGENH24LUDE]

i don't care what anyone says an unorthodox pulley kit is great i got 33peakwhp and 26peaktq with my kit (i'm also running 272*&268* cam gears)

[Northern Sun]

Then WHAT else can I do to my H23 SI prelude.. and DONT say H22 please!!

intake
header
exhaust
hiflow cat
cam gears
64mm bored out throttle body
modified intake manifold (4 butterfly mod, it not what u thinkin' )
More aggressive cams
fuel pressure regulator
U2Q7 tranny (if u can get one)
8 pounder with good clutch and u ready to go with safc

[Zachp911]

^Umm, this thread is almost 2 years old.

[Northern Sun]

u know what, im not posting anymore, this is 3rd post that is outdate it, what i was thinking yesterday , probably about new years party

[AllmotorBB6]

Originally Posted by AcesHigh

Your stock crank pulleys act like an engine damper with their rubber mid lining. You are compromising your engine's stability (and life) using these all metal 'racing pulleys'. Plus you'll vibrate alot more. Honda dampened their stock pulleys for a reason. You're pretty much asking for trouble.

getting the trupower pullies isnt asking for trouble tho. It's only when you go switching the crank pulley.

[Gohan Ryu]

There was no dampener on my stock (h22) crank pulley...it's solid metal all the way thru.

Here's an interesting quote from the Unorthadox Racing website:

"The pulleys on most of the new import and smaller domestic engines have an elastomer (rubber ring) incorporated into the pulley that makes them look similar to a harmonic damper. The elastomer in the OEM pulley serves as an isolator, which is there to suppress natural vibration and noise from the engine itself, the A/C compressor, P/S pump, and alternator. This is what the manufacturers call NVH (Noise Vibration & Harshness) when referring to noticeable noise and vibration in the passenger compartment. It is important to note in these applications, the elastomer is inadequate in size and durability to act as an effective torsional damper. If you look at the pulleys on some imports there is no rubber to be found at all. We have samples of these, mostly from Acura/Honda, the Nissan Altima, 1.8L Eclipse, 2.3L Fords, Chrysler 2.2L's, and 1.8L VW's, to mention a few. This is not to say with our pulleys you will hear a ton of noise or feel more vibration from your engine compartment. Most owners who have installed our pulleys notice the engine actually feels smoother. This is result of replacing the heavy crank pulley with our crank pulley. NVH is variable and unique to every car. NVH will increase with the installation of an aftermarket intake and/or exhaust, for example. Think of OEM intake systems in newer cars, they use baffles and resonators in the intake to quiet all the intake noise. Aftermarket intakes eliminate these resonators and create dramatic increases in engine noise from the throttle opening and closing. So to most tuners, certain types of NVH can make the driving experience more enjoyable.

The purpose of a traditional harmonic damper is to protect against crank failure from torsional movement. This is not necessary in most modern engines because of the many advances in engine design and materials. Factors such as stroke length, displacement, inline, V configurations, piston dwell time, piston pin off-set, power output, etc., do determine when and how these harmonics and torsional movements occur.

Again, there is a lot of internet hearsay about crank pulleys. When engine problems occur, too often people are quick to blame the pulley first, rather than taking the time to look logically into why there was a problem. We hope that after reading this you will understand the crank pulleys better."

http://www.unorthodoxracing.com/faq_pulleys.html

Of course UR isn't going to say their pulleys are harmful, but this is the first time I've read an actual explanation of the mythical "dampeners" everyone talks about.

[joellthomas]

Weight, is better than HP. Good plugs and wires. Sythetic oil, it last longer tween changes too.

[Lockdown_2001]

I've seen dampened pulleys for the h22, think they are worth it? Ill post the site when I find it.

[Sitruc_bc]

Originally Posted by 95vteclude

Get lots of NOS stickers, and a huge double decker wing.... that will give you about 100 HP

That is the most hilarious thing I've ever read in my life!